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-rw-r--r--nixpkgs/pkgs/applications/graphics/ImageMagick/7.0.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/ImageMagick/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/PythonMagick/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/ahoviewer/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/alchemy/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/animbar/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/antimony/default.nix13
-rw-r--r--nixpkgs/pkgs/applications/graphics/apitrace/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/autopanosiftc/default.nix6
-rw-r--r--nixpkgs/pkgs/applications/graphics/autotrace/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/awesomebump/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/batik/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/c3d/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/comical/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/deskew/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/dia/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/digikam/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/displaycal/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/dosage/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/draftsight/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/drawing/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/drawio/default.nix6
-rw-r--r--nixpkgs/pkgs/applications/graphics/drawpile/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/epeg/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/exrdisplay/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/exrtools/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/fbida/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/feh/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/fig2dev/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/fluxus/default.nix6
-rw-r--r--nixpkgs/pkgs/applications/graphics/fondo/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/fontmatrix/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/freepv/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/gcolor2/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gcolor3/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/geeqie/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gimp/plugins/default.nix16
-rw-r--r--nixpkgs/pkgs/applications/graphics/glabels/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gnome-photos/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/gnuclad/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gocr/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/goxel/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gpicview/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/gqview/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/grafx2/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/graphicsmagick/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/gscan2pdf/default.nix6
-rw-r--r--nixpkgs/pkgs/applications/graphics/gthumb/default.nix5
-rw-r--r--nixpkgs/pkgs/applications/graphics/guetzli/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/hugin/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/ideogram/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/image_optim/Gemfile.lock2
-rw-r--r--nixpkgs/pkgs/applications/graphics/image_optim/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/imagej/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/imgcat/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/imlibsetroot/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/imv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/inkscape/default.nix143
-rw-r--r--nixpkgs/pkgs/applications/graphics/ipe/default.nix14
-rw-r--r--nixpkgs/pkgs/applications/graphics/jpegoptim/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/jpegrescan/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/k3d/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/kodelife/default.nix11
-rw-r--r--nixpkgs/pkgs/applications/graphics/krita/default.nix5
-rw-r--r--nixpkgs/pkgs/applications/graphics/krop/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/leocad/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/luminance-hdr/default.nix7
-rw-r--r--nixpkgs/pkgs/applications/graphics/meh/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/meshlab/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/minidjvu/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/mozjpeg/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/mtpaint/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/nomacs/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/openimageio/2.x.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/openimageio/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/openscad/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/panotools/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/paraview/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/pbrt/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/pdfcpu/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/photoflow/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/photoqt/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/phototonic/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/pinta/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/potrace/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/pqiv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/processing/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/qcomicbook/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/qimgv/default.nix44
-rw-r--r--nixpkgs/pkgs/applications/graphics/qiv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/qscreenshot/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/rapid-photo-downloader/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/rawtherapee/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/renderdoc/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/runwayml/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/backends/airscan/default.nix27
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/udev_rules_type1.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/backends/dsseries/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/frontends.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sane/xsane.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/scantailor/advanced.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/scantailor/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/screencloud/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/shotwell/default.nix6
-rw-r--r--nixpkgs/pkgs/applications/graphics/shutter/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/smartdeblur/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/solvespace/default.nix4
-rw-r--r--nixpkgs/pkgs/applications/graphics/swingsane/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/sxiv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/synfigstudio/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/tesseract/tesseract3.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/tesseract/tesseract4.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/timelapse-deflicker/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/ufraw/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/unigine-valley/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/viewnior/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/vimiv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/wings/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/write_stylus/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/xaos/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/xara/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/xfractint/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/xournal/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/xzgv/default.nix2
-rw-r--r--nixpkgs/pkgs/applications/graphics/zgv/default.nix4
126 files changed, 322 insertions, 247 deletions
diff --git a/nixpkgs/pkgs/applications/graphics/ImageMagick/7.0.nix b/nixpkgs/pkgs/applications/graphics/ImageMagick/7.0.nix
index 31eebf7d0a9f..c07c3957254b 100644
--- a/nixpkgs/pkgs/applications/graphics/ImageMagick/7.0.nix
+++ b/nixpkgs/pkgs/applications/graphics/ImageMagick/7.0.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.imagemagick.org/;
+    homepage = "http://www.imagemagick.org/";
     description = "A software suite to create, edit, compose, or convert bitmap images";
     platforms = platforms.linux ++ platforms.darwin;
     license = licenses.asl20;
diff --git a/nixpkgs/pkgs/applications/graphics/ImageMagick/default.nix b/nixpkgs/pkgs/applications/graphics/ImageMagick/default.nix
index 9cfccc7425bb..57ce02bb6610 100644
--- a/nixpkgs/pkgs/applications/graphics/ImageMagick/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/ImageMagick/default.nix
@@ -96,7 +96,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.imagemagick.org/;
+    homepage = "http://www.imagemagick.org/";
     description = "A software suite to create, edit, compose, or convert bitmap images";
     platforms = platforms.linux ++ platforms.darwin;
     maintainers = with maintainers; [ the-kenny ];
diff --git a/nixpkgs/pkgs/applications/graphics/PythonMagick/default.nix b/nixpkgs/pkgs/applications/graphics/PythonMagick/default.nix
index e35a0190d8bc..487648d07ca1 100644
--- a/nixpkgs/pkgs/applications/graphics/PythonMagick/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/PythonMagick/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ python python.pkgs.boost imagemagick ];
 
   meta = with stdenv.lib; {
-    homepage = http://www.imagemagick.org/script/api.php;
+    homepage = "http://www.imagemagick.org/script/api.php";
     license = licenses.imagemagick;
     description = "PythonMagick provides object oriented bindings for the ImageMagick Library.";
   };
diff --git a/nixpkgs/pkgs/applications/graphics/ahoviewer/default.nix b/nixpkgs/pkgs/applications/graphics/ahoviewer/default.nix
index 87bddf9099ee..c5f1bf868018 100644
--- a/nixpkgs/pkgs/applications/graphics/ahoviewer/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/ahoviewer/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/ahodesuka/ahoviewer;
+    homepage = "https://github.com/ahodesuka/ahoviewer";
     description = "A GTK2 image viewer, manga reader, and booru browser";
     maintainers = with maintainers; [ skrzyp xzfc ];
     license = licenses.mit;
diff --git a/nixpkgs/pkgs/applications/graphics/alchemy/default.nix b/nixpkgs/pkgs/applications/graphics/alchemy/default.nix
index 5132d5950aab..6fc84e088dd3 100644
--- a/nixpkgs/pkgs/applications/graphics/alchemy/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/alchemy/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
       Experimental in nature, Alchemy lets you brainstorm visually to explore
       an expanded range of ideas and possibilities in a serendipitous way.
     '';
-    homepage = http://al.chemy.org/;
+    homepage = "http://al.chemy.org/";
     license = licenses.gpl3Plus;
     maintainers = [ maintainers.marcweber ];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/animbar/default.nix b/nixpkgs/pkgs/applications/graphics/animbar/default.nix
index c4f1b4218d07..771145d54b65 100644
--- a/nixpkgs/pkgs/applications/graphics/animbar/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/animbar/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
 	names: picket fence animation, barrier grid animation, Moiré
 	animation, to name a few.
     '';
-    homepage = http://animbar.mnim.org;
+    homepage = "http://animbar.mnim.org";
     maintainers = with maintainers; [ leenaars ];
     platforms = platforms.linux;
     license = licenses.gpl3;
diff --git a/nixpkgs/pkgs/applications/graphics/antimony/default.nix b/nixpkgs/pkgs/applications/graphics/antimony/default.nix
index 5966d6427ed6..363f3b8c84d9 100644
--- a/nixpkgs/pkgs/applications/graphics/antimony/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/antimony/default.nix
@@ -4,19 +4,19 @@
 }:
 
 let
-  gitRev    = "6dfe6822e0279a4cc2f1c60e85b42212627285fe";
+  gitRev    = "8fb4b0929ce84cf375bfb83a9d522ccd80681eaf";
   gitBranch = "develop";
   gitTag    = "0.9.3";
 in
   stdenv.mkDerivation {
     pname = "antimony";
-    version = "2019-10-30";
+    version = "2020-03-28";
 
     src = fetchFromGitHub {
       owner  = "mkeeter";
       repo   = "antimony";
       rev    = gitRev;
-      sha256 = "07zlkwlk79czq8dy85b6n3ds3g36l8qy4ix849ady6ia3gm8981j";
+      sha256 = "1s0zmq5jmhmb1wcsyaxfmii448g6x8b41mzvb1awlljj85qj0k2s";
     };
 
     patches = [ ./paths-fix.patch ];
@@ -29,11 +29,10 @@ in
 
     buildInputs = [
       libpng python3 python3.pkgs.boost
-      libGLU libGL qtbase wrapQtAppsHook
-      ncurses
+      libGLU libGL qtbase ncurses
     ];
 
-    nativeBuildInputs = [ cmake flex lemon ];
+    nativeBuildInputs = [ cmake flex lemon wrapQtAppsHook ];
 
     cmakeFlags= [
       "-DGITREV=${gitRev}"
@@ -45,7 +44,7 @@ in
 
     meta = with stdenv.lib; {
       description = "A computer-aided design (CAD) tool from a parallel universe";
-      homepage    = https://github.com/mkeeter/antimony;
+      homepage    = "https://github.com/mkeeter/antimony";
       license     = licenses.mit;
       maintainers = with maintainers; [ rnhmjoj ];
       platforms   = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/apitrace/default.nix b/nixpkgs/pkgs/applications/graphics/apitrace/default.nix
index 5ce36f4f10e9..f6f9cb281a77 100644
--- a/nixpkgs/pkgs/applications/graphics/apitrace/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/apitrace/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
 
   meta = with stdenv.lib; {
-    homepage = https://apitrace.github.io;
+    homepage = "https://apitrace.github.io";
     description = "Tools to trace OpenGL, OpenGL ES, Direct3D, and DirectDraw APIs";
     license = licenses.mit;
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/autopanosiftc/default.nix b/nixpkgs/pkgs/applications/graphics/autopanosiftc/default.nix
index c64604975ab0..14af98ebc48b 100644
--- a/nixpkgs/pkgs/applications/graphics/autopanosiftc/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/autopanosiftc/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "autopano-sift-C-2.5.1";
 
   src = fetchurl {
-    url = mirror://sourceforge/hugin/autopano-sift-C-2.5.1.tar.gz;
+    url = "mirror://sourceforge/hugin/autopano-sift-C-2.5.1.tar.gz";
     sha256 = "0dqk8ff82gmy4v5ns5nr9gpzkc1p7c2y8c8fkid102r47wsjk44s";
   };
 
@@ -12,13 +12,13 @@ stdenv.mkDerivation {
 
   patches = [
     (fetchurl {
-      url = https://gitweb.gentoo.org/repo/gentoo.git/plain/media-gfx/autopano-sift-C/files/autopano-sift-C-2.5.1-lm.patch;
+      url = "https://gitweb.gentoo.org/repo/gentoo.git/plain/media-gfx/autopano-sift-C/files/autopano-sift-C-2.5.1-lm.patch";
       sha256 = "1bfcr5sps0ip9gl4jprji5jgf9wkczz6d2clsjjlbsy8r3ixi3lv";
     })
   ];
 
   meta = {
-    homepage = http://hugin.sourceforge.net/;
+    homepage = "http://hugin.sourceforge.net/";
     description = "Implementation in C of the autopano-sift algorithm for automatically stitching panoramas";
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/autotrace/default.nix b/nixpkgs/pkgs/applications/graphics/autotrace/default.nix
index 57e95dfef106..cd7937f8a549 100644
--- a/nixpkgs/pkgs/applications/graphics/autotrace/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/autotrace/default.nix
@@ -62,7 +62,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://autotrace.sourceforge.net/;
+    homepage = "http://autotrace.sourceforge.net/";
     description = "Utility for converting bitmap into vector graphics";
     platforms = platforms.unix;
     maintainers = with maintainers; [ hodapp ];
diff --git a/nixpkgs/pkgs/applications/graphics/awesomebump/default.nix b/nixpkgs/pkgs/applications/graphics/awesomebump/default.nix
index b827a12f81c8..c02140e1905d 100644
--- a/nixpkgs/pkgs/applications/graphics/awesomebump/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/awesomebump/default.nix
@@ -53,7 +53,7 @@ in stdenv.mkDerivation {
   enableParallelBuilding = false;
 
   meta = {
-    homepage = https://github.com/kmkolasinski/AwesomeBump;
+    homepage = "https://github.com/kmkolasinski/AwesomeBump";
     description = "A program to generate normal, height, specular or ambient occlusion textures from a single image";
     license = lib.licenses.gpl3Plus;
     maintainers = [ lib.maintainers.eelco ];
diff --git a/nixpkgs/pkgs/applications/graphics/batik/default.nix b/nixpkgs/pkgs/applications/graphics/batik/default.nix
index 51156dea4a17..3c78c8b6dbd2 100644
--- a/nixpkgs/pkgs/applications/graphics/batik/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/batik/default.nix
@@ -4,7 +4,7 @@ stdenv.mkDerivation {
   name = "batik-1.6";
   builder = ./builder.sh;
   src = fetchurl {
-    url = http://tarballs.nixos.org/batik-1.6.zip;
+    url = "http://tarballs.nixos.org/batik-1.6.zip";
     sha256 = "0cf15dspmzcnfda8w5lbsdx28m4v2rpq1dv5zx0r0n99ihqd1sh6";
   };
 
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Java based toolkit for handling SVG";
-    homepage = https://xmlgraphics.apache.org/batik;
+    homepage = "https://xmlgraphics.apache.org/batik";
     license = licenses.asl20;
     platforms = platforms.unix;
     knownVulnerabilities = [
diff --git a/nixpkgs/pkgs/applications/graphics/c3d/default.nix b/nixpkgs/pkgs/applications/graphics/c3d/default.nix
index 55a5d49f7524..61efec8dc9d4 100644
--- a/nixpkgs/pkgs/applications/graphics/c3d/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/c3d/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation {
     ++ stdenv.lib.optional stdenv.isDarwin Cocoa;
 
   meta = with stdenv.lib; {
-    homepage = http://www.itksnap.org/c3d;
+    homepage = "http://www.itksnap.org/c3d";
     description = "Medical imaging processing tool";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/comical/default.nix b/nixpkgs/pkgs/applications/graphics/comical/default.nix
index 2796a5535a03..8e6e151aff6a 100644
--- a/nixpkgs/pkgs/applications/graphics/comical/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/comical/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Viewer of CBR and CBZ files, often used to store scanned comics";
-    homepage = http://comical.sourceforge.net/;
+    homepage = "http://comical.sourceforge.net/";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/nixpkgs/pkgs/applications/graphics/deskew/default.nix b/nixpkgs/pkgs/applications/graphics/deskew/default.nix
index c35aaa044aef..422c7a0e15e8 100644
--- a/nixpkgs/pkgs/applications/graphics/deskew/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/deskew/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A command line tool for deskewing scanned text documents";
-    homepage = https://bitbucket.org/galfar/app-deskew/overview;
+    homepage = "https://bitbucket.org/galfar/app-deskew/overview";
     license = licenses.mit;
     maintainers = with maintainers; [ryantm];
     platforms = platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/dia/default.nix b/nixpkgs/pkgs/applications/graphics/dia/default.nix
index 3984cfc17ca5..6ec54201fbfa 100644
--- a/nixpkgs/pkgs/applications/graphics/dia/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/dia/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
   version = "0.97.3.20170622";
 
   src = fetchgit {
-    url = https://gitlab.gnome.org/GNOME/dia.git;
+    url = "https://gitlab.gnome.org/GNOME/dia.git";
     rev = "b86085dfe2b048a2d37d587adf8ceba6fb8bc43c";
     sha256 = "1fyxfrzdcs6blxhkw3bcgkksaf3byrsj4cbyrqgb4869k3ynap96";
   };
@@ -31,7 +31,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Gnome Diagram drawing software";
-    homepage = http://live.gnome.org/Dia;
+    homepage = "http://live.gnome.org/Dia";
     maintainers = with maintainers; [ raskin ];
     license = licenses.gpl2;
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/digikam/default.nix b/nixpkgs/pkgs/applications/graphics/digikam/default.nix
index e6e24e0e56f5..50162166013e 100644
--- a/nixpkgs/pkgs/applications/graphics/digikam/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/digikam/default.nix
@@ -125,7 +125,7 @@ mkDerivation rec {
   meta = with lib; {
     description = "Photo Management Program";
     license = licenses.gpl2;
-    homepage = https://www.digikam.org;
+    homepage = "https://www.digikam.org";
     maintainers = with maintainers; [ the-kenny ];
     platforms = platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/displaycal/default.nix b/nixpkgs/pkgs/applications/graphics/displaycal/default.nix
index 7a4db535b2b0..7a99361a03d9 100644
--- a/nixpkgs/pkgs/applications/graphics/displaycal/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/displaycal/default.nix
@@ -20,7 +20,7 @@ in buildPythonApplication {
   enableParallelBuilding = true;
 
   src = fetchurl {
-    url = mirror://sourceforge/project/dispcalgui/release/3.5.0.0/DisplayCAL-3.5.0.0.tar.gz;
+    url = "mirror://sourceforge/project/dispcalgui/release/3.5.0.0/DisplayCAL-3.5.0.0.tar.gz";
     sha256 = "1j496sv8pbhby5hkkbp07k6bs3f7mb1l3dijmn2iga3kmix0fn5q";
   };
 
@@ -62,7 +62,7 @@ in buildPythonApplication {
 
   meta = {
     description = "Display Calibration and Characterization powered by Argyll CMS";
-    homepage = https://displaycal.net/;
+    homepage = "https://displaycal.net/";
     license = stdenv.lib.licenses.gpl3;
     maintainers = [stdenv.lib.maintainers.marcweber];
     platforms = stdenv.lib.platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/dosage/default.nix b/nixpkgs/pkgs/applications/graphics/dosage/default.nix
index e26886b070e5..b491c3e3ead0 100644
--- a/nixpkgs/pkgs/applications/graphics/dosage/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/dosage/default.nix
@@ -22,7 +22,7 @@ python3Packages.buildPythonApplication rec {
 
   meta = {
     description = "A comic strip downloader and archiver";
-    homepage = https://dosage.rocks/;
+    homepage = "https://dosage.rocks/";
     license = stdenv.lib.licenses.mit;
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/draftsight/default.nix b/nixpkgs/pkgs/applications/graphics/draftsight/default.nix
index 144c723da20f..ccd4fd660f76 100644
--- a/nixpkgs/pkgs/applications/graphics/draftsight/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/draftsight/default.nix
@@ -80,7 +80,7 @@ stdenv.mkDerivation {
   meta = with stdenv.lib; {
     description = "2D design & drafting application, meant to be similar to AutoCAD";
     longDescription = "Professional-grade 2D design and drafting solution from Dassault Systèmes that lets you create, edit, view and mark up any kind of 2D CAD drawing.";
-    homepage = https://www.3ds.com/products-services/draftsight-cad-software/;
+    homepage = "https://www.3ds.com/products-services/draftsight-cad-software/";
     license = stdenv.lib.licenses.unfree;
     maintainers = with maintainers; [ hodapp ];
     platforms = [ "x86_64-linux" ];
diff --git a/nixpkgs/pkgs/applications/graphics/drawing/default.nix b/nixpkgs/pkgs/applications/graphics/drawing/default.nix
index 67fa5da398bc..fb68276b168c 100644
--- a/nixpkgs/pkgs/applications/graphics/drawing/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/drawing/default.nix
@@ -17,7 +17,7 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "drawing";
-  version = "0.4.11";
+  version = "0.4.13";
 
   format = "other";
   
@@ -25,7 +25,7 @@ python3.pkgs.buildPythonApplication rec {
     owner = "maoschanz";
     repo = pname;
     rev = version;
-    sha256 = "00c1h6jns11rmsg35gy40fb6ahvik80wpbm2133bjcqxfwwnlal6";
+    sha256 = "0mj2nmfrckv89srgkn16fnbrb35f5a655ak8bb3rd9na3hd5bq53";
   };
 
   nativeBuildInputs = [
diff --git a/nixpkgs/pkgs/applications/graphics/drawio/default.nix b/nixpkgs/pkgs/applications/graphics/drawio/default.nix
index 2a7efea52713..aa1ac0f26208 100644
--- a/nixpkgs/pkgs/applications/graphics/drawio/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/drawio/default.nix
@@ -11,11 +11,11 @@
 
 stdenv.mkDerivation rec {
   pname = "drawio";
-  version = "12.6.5";
+  version = "12.9.9";
 
   src = fetchurl {
     url = "https://github.com/jgraph/drawio-desktop/releases/download/v${version}/draw.io-x86_64-${version}.rpm";
-    sha256 = "14x4h680q3w9wsdmivy2k1bggb09vdm3a3wrpfwd79dbaagjk4lc";
+    sha256 = "07lx99fd4vkgdhagshzawrh8ncbv19hvxjpzgd3yjdj0nalvmxin";
   };
 
   nativeBuildInputs = [
@@ -86,7 +86,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A desktop application for creating diagrams";
-    homepage = https://about.draw.io/;
+    homepage = "https://about.draw.io/";
     license = licenses.asl20;
     maintainers = with maintainers; [ danieldk ];
     platforms = [ "x86_64-linux" ];
diff --git a/nixpkgs/pkgs/applications/graphics/drawpile/default.nix b/nixpkgs/pkgs/applications/graphics/drawpile/default.nix
index a8c4e6d14ba9..0ffcb5cdb410 100644
--- a/nixpkgs/pkgs/applications/graphics/drawpile/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/drawpile/default.nix
@@ -86,8 +86,8 @@ in mkDerivation rec {
 
   meta = {
     description = "A collaborative drawing program that allows multiple users to sketch on the same canvas simultaneously";
-    homepage = https://drawpile.net/;
-    downloadPage = https://drawpile.net/download/;
+    homepage = "https://drawpile.net/";
+    downloadPage = "https://drawpile.net/download/";
     license = licenses.gpl3;
     maintainers = with maintainers; [ fgaz ];
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/epeg/default.nix b/nixpkgs/pkgs/applications/graphics/epeg/default.nix
index 3b7bdfb8efc2..bdbdf04bcd50 100644
--- a/nixpkgs/pkgs/applications/graphics/epeg/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/epeg/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/mattes/epeg;
+    homepage = "https://github.com/mattes/epeg";
     description = "Insanely fast JPEG/ JPG thumbnail scaling";
     platforms = platforms.linux ++ platforms.darwin;
     license = {
diff --git a/nixpkgs/pkgs/applications/graphics/exrdisplay/default.nix b/nixpkgs/pkgs/applications/graphics/exrdisplay/default.nix
index d8b08faf2398..7841e9d571b7 100644
--- a/nixpkgs/pkgs/applications/graphics/exrdisplay/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/exrdisplay/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Application for viewing OpenEXR images on a display at various exposure settings";
-    homepage = http://openexr.com;
+    homepage = "http://openexr.com";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.bsd3;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/exrtools/default.nix b/nixpkgs/pkgs/applications/graphics/exrtools/default.nix
index c8928540bb65..39c23eb4fe8c 100644
--- a/nixpkgs/pkgs/applications/graphics/exrtools/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/exrtools/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Collection of utilities for manipulating OpenEXR images";
-    homepage = http://scanline.ca/exrtools;
+    homepage = "http://scanline.ca/exrtools";
     platforms = platforms.linux;
     license = licenses.mit;
     maintainers = [ maintainers.juliendehos ];
diff --git a/nixpkgs/pkgs/applications/graphics/fbida/default.nix b/nixpkgs/pkgs/applications/graphics/fbida/default.nix
index 3e64783df316..7f0167f98342 100644
--- a/nixpkgs/pkgs/applications/graphics/fbida/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/fbida/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Image viewing and manipulation programs including fbi, fbgs, ida, exiftran and thumbnail.cgi";
-    homepage = https://www.kraxel.org/blog/linux/fbida/;
+    homepage = "https://www.kraxel.org/blog/linux/fbida/";
     license = licenses.gpl2;
     maintainers = with maintainers; [ pSub ];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/feh/default.nix b/nixpkgs/pkgs/applications/graphics/feh/default.nix
index 1eb99a9a7e41..a0e04bf4ad32 100644
--- a/nixpkgs/pkgs/applications/graphics/feh/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/feh/default.nix
@@ -6,11 +6,11 @@ with stdenv.lib;
 
 stdenv.mkDerivation rec {
   pname = "feh";
-  version = "3.3";
+  version = "3.4";
 
   src = fetchurl {
     url = "https://feh.finalrewind.org/${pname}-${version}.tar.bz2";
-    sha256 = "04c8cgwzkax481sz7lbzy23mk79bqmjy3qpvr7vxa4c14mc9k5gk";
+    sha256 = "0r83zincbfnk8g13xwm2qaccml9srnwlsmpc1f0nhwjkqyjmqm0q";
   };
 
   outputs = [ "out" "man" "doc" ];
diff --git a/nixpkgs/pkgs/applications/graphics/fig2dev/default.nix b/nixpkgs/pkgs/applications/graphics/fig2dev/default.nix
index c364badc1742..cd7db3d29c50 100644
--- a/nixpkgs/pkgs/applications/graphics/fig2dev/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/fig2dev/default.nix
@@ -18,7 +18,7 @@ in stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Tool to convert Xfig files to other formats";
-    homepage = http://mcj.sourceforge.net/;
+    homepage = "http://mcj.sourceforge.net/";
     license = licenses.xfig;
     platforms = platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/fluxus/default.nix b/nixpkgs/pkgs/applications/graphics/fluxus/default.nix
index a80940711013..a53eb806bcf1 100644
--- a/nixpkgs/pkgs/applications/graphics/fluxus/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/fluxus/default.nix
@@ -50,7 +50,7 @@ stdenv.mkDerivation rec {
     owner = "nebogeo";
     repo = "fluxus";
     rev = "ba9aee218dd4a9cfab914ad78bdb6d59e9a37400";
-    hash = "sha256:0mwghpgq4n1khwlmgscirhmcdhi6x00c08q4idi2zcqz961bbs28";
+    sha256 = "0mwghpgq4n1khwlmgscirhmcdhi6x00c08q4idi2zcqz961bbs28";
   };
 
   buildInputs = [
@@ -69,7 +69,7 @@ stdenv.mkDerivation rec {
     openssl.dev
     racket
   ];
-  nativeBuildInputs = [ scons ];
+  nativeBuildInputs = [ scons.py2 ];
 
   patches = [ ./fix-build.patch ];
   sconsFlags = [
@@ -90,7 +90,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Livecoding environment for 3D graphics, sound, and games";
     license = licenses.gpl2;
-    homepage = http://www.pawfal.org/fluxus/;
+    homepage = "http://www.pawfal.org/fluxus/";
     maintainers = [ maintainers.brainrape ];
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/fondo/default.nix b/nixpkgs/pkgs/applications/graphics/fondo/default.nix
index 7b186312301d..877328e8823e 100644
--- a/nixpkgs/pkgs/applications/graphics/fondo/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/fondo/default.nix
@@ -65,7 +65,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Find the most beautiful wallpapers for your desktop";
-    homepage = https://github.com/calo001/fondo;
+    homepage = "https://github.com/calo001/fondo";
     license = licenses.agpl3Plus;
     maintainers = with maintainers; [ worldofpeace ];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/fontmatrix/default.nix b/nixpkgs/pkgs/applications/graphics/fontmatrix/default.nix
index 3b8662976032..99ca119b3bcd 100644
--- a/nixpkgs/pkgs/applications/graphics/fontmatrix/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/fontmatrix/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Fontmatrix is a free/libre font explorer for Linux, Windows and Mac";
-    homepage = https://github.com/fontmatrix/fontmatrix;
+    homepage = "https://github.com/fontmatrix/fontmatrix";
     license = licenses.gpl2;
     platforms = platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/freepv/default.nix b/nixpkgs/pkgs/applications/graphics/freepv/default.nix
index 57321220fb14..11d203746e1a 100644
--- a/nixpkgs/pkgs/applications/graphics/freepv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/freepv/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   name = "freepv-0.3.0";
 
   src = fetchurl {
-    url = mirror://sourceforge/freepv/freepv-0.3.0.tar.gz;
+    url = "mirror://sourceforge/freepv/freepv-0.3.0.tar.gz";
     sha256 = "1w19abqjn64w47m35alg7bcdl1p97nf11zn64cp4p0dydihmhv56";
   };
 
@@ -29,7 +29,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Open source panorama viewer using GL";
-    homepage = http://freepv.sourceforge.net/;
+    homepage = "http://freepv.sourceforge.net/";
     license = [ stdenv.lib.licenses.lgpl21 ];
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/gcolor2/default.nix b/nixpkgs/pkgs/applications/graphics/gcolor2/default.nix
index f729c9c2bba2..f585a0c5d29c 100644
--- a/nixpkgs/pkgs/applications/graphics/gcolor2/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gcolor2/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Simple GTK 2 color selector";
-    homepage = http://gcolor2.sourceforge.net/;
+    homepage = "http://gcolor2.sourceforge.net/";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [ notthemessiah ];
     platforms = with stdenv.lib.platforms; unix;
diff --git a/nixpkgs/pkgs/applications/graphics/gcolor3/default.nix b/nixpkgs/pkgs/applications/graphics/gcolor3/default.nix
index 67be3ba6782c..1c1c6ba08ee2 100644
--- a/nixpkgs/pkgs/applications/graphics/gcolor3/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gcolor3/default.nix
@@ -34,7 +34,7 @@ in stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A simple color chooser written in GTK3";
-    homepage = https://www.hjdskes.nl/projects/gcolor3/;
+    homepage = "https://www.hjdskes.nl/projects/gcolor3/";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ jtojnar ];
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/geeqie/default.nix b/nixpkgs/pkgs/applications/graphics/geeqie/default.nix
index 4275c6f0dcfd..51c066196efd 100644
--- a/nixpkgs/pkgs/applications/graphics/geeqie/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/geeqie/default.nix
@@ -61,7 +61,7 @@ stdenv.mkDerivation rec {
 
     license = licenses.gpl2Plus;
 
-    homepage = http://geeqie.sourceforge.net;
+    homepage = "http://geeqie.sourceforge.net";
 
     maintainers = with maintainers; [ jfrankenau pSub ];
     platforms = platforms.gnu ++ platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/gimp/plugins/default.nix b/nixpkgs/pkgs/applications/graphics/gimp/plugins/default.nix
index 0a06c42b5fc0..0b5e6a7f379f 100644
--- a/nixpkgs/pkgs/applications/graphics/gimp/plugins/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gimp/plugins/default.nix
@@ -45,7 +45,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     */
     name = "gap-2.6.0";
     src = fetchurl {
-      url = https://ftp.gimp.org/pub/gimp/plug-ins/v2.6/gap/gimp-gap-2.6.0.tar.bz2;
+      url = "https://ftp.gimp.org/pub/gimp/plug-ins/v2.6/gap/gimp-gap-2.6.0.tar.bz2";
       sha256 = "1jic7ixcmsn4kx2cn32nc5087rk6g8xsrz022xy11yfmgvhzb0ql";
     };
     NIX_LDFLAGS = "-lm";
@@ -56,7 +56,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     hardeningDisable = [ "format" ];
     meta = with stdenv.lib; {
       description = "The GIMP Animation Package";
-      homepage = https://www.gimp.org;
+      homepage = "https://www.gimp.org";
       # The main code is given in GPLv3, but it has ffmpeg in it, and I think ffmpeg license
       # falls inside "free".
       license = with licenses; [ gpl3 free ];
@@ -143,7 +143,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     name = "wavelet-sharpen-0.1.2";
     NIX_LDFLAGS = "-lm";
     src = fetchurl {
-      url = http://registry.gimp.org/files/wavelet-sharpen-0.1.2.tar.gz;
+      url = "http://registry.gimp.org/files/wavelet-sharpen-0.1.2.tar.gz";
       sha256 = "0vql1k67i21g5ivaa1jh56rg427m0icrkpryrhg75nscpirfxxqw";
     };
     installPhase = "installPlugins src/wavelet-sharpen"; # TODO translations are not copied .. How to do this on nix?
@@ -156,7 +156,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     name = "lqr-plugin-0.6.1";
     buildInputs = with pkgs; [ liblqr1 ];
     src = fetchurl {
-      url = http://registry.gimp.org/files/gimp-lqr-plugin-0.6.1.tar.bz2;
+      url = "http://registry.gimp.org/files/gimp-lqr-plugin-0.6.1.tar.bz2";
       sha256 = "00hklkpcimcbpjly4rjhfipaw096cpy768g9wixglwrsyqhil7l9";
     };
     #postInstall = ''mkdir -p $out/nix-support; echo "${liblqr1}" > "$out/nix-support/propagated-user-env-packages"'';
@@ -189,7 +189,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     meta = {
       description = "GIMP plugin to correct lens distortion using the lensfun library and database";
 
-      homepage = http://lensfun.sebastiankraft.net/;
+      homepage = "http://lensfun.sebastiankraft.net/";
 
       license = stdenv.lib.licenses.gpl3Plus;
       maintainers = [ ];
@@ -203,7 +203,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
   exposureBlend = scriptDerivation {
     name = "exposure-blend";
     src = fetchurl {
-      url = http://tir.astro.utoledo.edu/jdsmith/code/eb/exposure-blend.scm;
+      url = "http://tir.astro.utoledo.edu/jdsmith/code/eb/exposure-blend.scm";
       sha256 = "1b6c9wzpklqras4wwsyw3y3jp6fjmhnnskqiwm5sabs8djknfxla";
     };
     meta.broken = true;
@@ -212,7 +212,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
   lightning = scriptDerivation {
     name = "Lightning";
     src = fetchurl {
-      url = http://registry.gimp.org/files/Lightning.scm;
+      url = "http://registry.gimp.org/files/Lightning.scm";
       sha256 = "c14a8f4f709695ede3f77348728a25b3f3ded420da60f3f8de3944b7eae98a49";
     };
   };
@@ -235,7 +235,7 @@ stdenv.lib.makeScope pkgs.newScope (self: with self; {
     # http://registry.gimp.org/node/153
     name = "lightning-gate";
     src = fetchurl {
-      url = http://registry.gimp.org/files/LightningGate.scm;
+      url = "http://registry.gimp.org/files/LightningGate.scm";
       sha256 = "181w1zi9a99kn2mfxjp43wkwcgw5vbb6iqjas7a9mhm8p04csys2";
     };
   };
diff --git a/nixpkgs/pkgs/applications/graphics/glabels/default.nix b/nixpkgs/pkgs/applications/graphics/glabels/default.nix
index fef296f45be2..be487fcb8a6b 100644
--- a/nixpkgs/pkgs/applications/graphics/glabels/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/glabels/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Create labels and business cards";
-    homepage = https://glabels.org/;
+    homepage = "https://glabels.org/";
     license = with licenses; [ gpl3Plus lgpl3Plus ];
     platforms = platforms.unix;
     maintainers = [ maintainers.nico202 ];
diff --git a/nixpkgs/pkgs/applications/graphics/gnome-photos/default.nix b/nixpkgs/pkgs/applications/graphics/gnome-photos/default.nix
index 6cbe5448b40a..46be8d145320 100644
--- a/nixpkgs/pkgs/applications/graphics/gnome-photos/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gnome-photos/default.nix
@@ -117,9 +117,9 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Access, organize and share your photos";
-    homepage = https://wiki.gnome.org/Apps/Photos;
+    homepage = "https://wiki.gnome.org/Apps/Photos";
     license = licenses.gpl3Plus;
-    maintainers = gnome3.maintainers;
+    maintainers = teams.gnome.members;
     platforms = platforms.linux;
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/gnuclad/default.nix b/nixpkgs/pkgs/applications/graphics/gnuclad/default.nix
index 5b6dd42e09e5..fcb4bdb53743 100644
--- a/nixpkgs/pkgs/applications/graphics/gnuclad/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gnuclad/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkgconfig ];
 
   meta = with stdenv.lib; {
-    homepage = https://launchpad.net/gnuclad;
+    homepage = "https://launchpad.net/gnuclad";
     description = "gnuclad tries to help the environment by creating trees.  It's primary use will be generating cladogram trees for the GNU/Linux distro timeline project.";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ mog ];
diff --git a/nixpkgs/pkgs/applications/graphics/gocr/default.nix b/nixpkgs/pkgs/applications/graphics/gocr/default.nix
index f5fa8ca9221d..7c586374ec51 100644
--- a/nixpkgs/pkgs/applications/graphics/gocr/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gocr/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://jocr.sourceforge.net/;
+    homepage = "http://jocr.sourceforge.net/";
     description = "GPL Optical Character Recognition";
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/goxel/default.nix b/nixpkgs/pkgs/applications/graphics/goxel/default.nix
index 84fdb60c31ef..6fb5b91c2a92 100644
--- a/nixpkgs/pkgs/applications/graphics/goxel/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/goxel/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Open Source 3D voxel editor";
-    homepage = https://guillaumechereau.github.io/goxel/;
+    homepage = "https://guillaumechereau.github.io/goxel/";
     license = licenses.gpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ tilpner ];
diff --git a/nixpkgs/pkgs/applications/graphics/gpicview/default.nix b/nixpkgs/pkgs/applications/graphics/gpicview/default.nix
index 86867cd1cca7..9e3ab37c3223 100644
--- a/nixpkgs/pkgs/applications/graphics/gpicview/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gpicview/default.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A simple and fast image viewer for X";
-    homepage    = http://lxde.sourceforge.net/gpicview/;
-    repositories.git = git://lxde.git.sourceforge.net/gitroot/lxde/gpicview;
+    homepage    = "http://lxde.sourceforge.net/gpicview/";
+    repositories.git = "git://lxde.git.sourceforge.net/gitroot/lxde/gpicview";
     license     = licenses.gpl2;
     maintainers = with maintainers; [ lovek323 ];
     platforms   = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/gqview/default.nix b/nixpkgs/pkgs/applications/graphics/gqview/default.nix
index d82238f925b3..965ac5db6821 100644
--- a/nixpkgs/pkgs/applications/graphics/gqview/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gqview/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
   name = "gqview-2.1.5";
 
   src = fetchurl {
-    url = mirror://sourceforge/gqview/gqview-2.1.5.tar.gz;
+    url = "mirror://sourceforge/gqview/gqview-2.1.5.tar.gz";
     sha256 = "0ilm5s7ps9kg4f5hzgjhg0xhn6zg0v9i7jnd67zrx9h7wsaa9zhj";
   };
 
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A fast image viewer";
-    homepage = http://gqview.sourceforge.net;
+    homepage = "http://gqview.sourceforge.net";
     license = licenses.gpl2;
     platforms = platforms.unix;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/grafx2/default.nix b/nixpkgs/pkgs/applications/graphics/grafx2/default.nix
index 039bb1917d37..2a2a6a675989 100644
--- a/nixpkgs/pkgs/applications/graphics/grafx2/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/grafx2/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Bitmap paint program inspired by the Amiga programs Deluxe Paint and Brilliance";
-    homepage = http://pulkomandy.tk/projects/GrafX2;
+    homepage = "http://pulkomandy.tk/projects/GrafX2";
     license = stdenv.lib.licenses.gpl2;
     platforms = [ "x86_64-linux" "i686-linux" ];
     maintainers = [ stdenv.lib.maintainers.zoomulator ];
diff --git a/nixpkgs/pkgs/applications/graphics/graphicsmagick/default.nix b/nixpkgs/pkgs/applications/graphics/graphicsmagick/default.nix
index 403a5285e150..be5114565ff5 100644
--- a/nixpkgs/pkgs/applications/graphics/graphicsmagick/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/graphicsmagick/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://www.graphicsmagick.org;
+    homepage = "http://www.graphicsmagick.org";
     description = "Swiss army knife of image processing";
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/gscan2pdf/default.nix b/nixpkgs/pkgs/applications/graphics/gscan2pdf/default.nix
index 76bb0bc13175..352b6b900cc6 100644
--- a/nixpkgs/pkgs/applications/graphics/gscan2pdf/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gscan2pdf/default.nix
@@ -10,11 +10,11 @@ with stdenv.lib;
 
 perlPackages.buildPerlPackage rec {
   pname = "gscan2pdf";
-  version = "2.6.3";
+  version = "2.6.5";
 
   src = fetchurl {
     url = "mirror://sourceforge/gscan2pdf/${version}/${pname}-${version}.tar.xz";
-    sha256 = "1chmk51xwylnjrgc6hw23x7g7cpwzgwmjc49fcah7pkd3dk1cvvr";
+    sha256 = "0x8931i5zs4zl3iqjhlp7h8y6ssklxiqsddz5kh84nl3p0izbg0y";
   };
 
   nativeBuildInputs = [ wrapGAppsHook ];
@@ -100,7 +100,7 @@ perlPackages.buildPerlPackage rec {
 
   meta = {
     description = "A GUI to produce PDFs or DjVus from scanned documents";
-    homepage = http://gscan2pdf.sourceforge.net/;
+    homepage = "http://gscan2pdf.sourceforge.net/";
     license = licenses.gpl3;
     maintainers = with maintainers; [ pacien ];
   };
diff --git a/nixpkgs/pkgs/applications/graphics/gthumb/default.nix b/nixpkgs/pkgs/applications/graphics/gthumb/default.nix
index b51db1e945fe..4a6526fe9c6e 100644
--- a/nixpkgs/pkgs/applications/graphics/gthumb/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/gthumb/default.nix
@@ -59,7 +59,10 @@ stdenv.mkDerivation rec {
     gnome3.adwaita-icon-theme
     gsettings-desktop-schemas
     gst_all_1.gst-plugins-base
-    gst_all_1.gstreamer
+    (gst_all_1.gst-plugins-good.override { gtkSupport = true; })
+    gst_all_1.gst-libav
+    gst_all_1.gst-plugins-bad
+    gst_all_1.gst-plugins-ugly
     gtk3
     json-glib
     lcms2
diff --git a/nixpkgs/pkgs/applications/graphics/guetzli/default.nix b/nixpkgs/pkgs/applications/graphics/guetzli/default.nix
index d7b964259683..ccddf907e94c 100644
--- a/nixpkgs/pkgs/applications/graphics/guetzli/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/guetzli/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
   meta = {
     description = "Perceptual JPEG encoder";
     longDescription = "Guetzli is a JPEG encoder that aims for excellent compression density at high visual quality.";
-    homepage = https://github.com/google/guetzli;
+    homepage = "https://github.com/google/guetzli";
     license = stdenv.lib.licenses.asl20;
     platforms = stdenv.lib.platforms.x86_64;
     maintainers = [ stdenv.lib.maintainers.seppeljordan ];
diff --git a/nixpkgs/pkgs/applications/graphics/hugin/default.nix b/nixpkgs/pkgs/applications/graphics/hugin/default.nix
index 8f7800a7323a..7314ff893b00 100644
--- a/nixpkgs/pkgs/applications/graphics/hugin/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/hugin/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://hugin.sourceforge.net/;
+    homepage = "http://hugin.sourceforge.net/";
     description = "Toolkit for stitching photographs and assembling panoramas, together with an easy to use graphical front end";
     license = licenses.gpl2Plus;
     maintainers = with maintainers; [ hrdinka ];
diff --git a/nixpkgs/pkgs/applications/graphics/ideogram/default.nix b/nixpkgs/pkgs/applications/graphics/ideogram/default.nix
index 3e17a045ecc1..4bf414cf8dd5 100644
--- a/nixpkgs/pkgs/applications/graphics/ideogram/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/ideogram/default.nix
@@ -58,7 +58,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Insert emoji anywhere, even in non-native apps - designed for elementary OS";
-    homepage = https://github.com/cassidyjames/ideogram;
+    homepage = "https://github.com/cassidyjames/ideogram";
     license = licenses.gpl2Plus;
     maintainers = pantheon.maintainers;
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/image_optim/Gemfile.lock b/nixpkgs/pkgs/applications/graphics/image_optim/Gemfile.lock
index 20c9772ce464..3ffadb5acbe3 100644
--- a/nixpkgs/pkgs/applications/graphics/image_optim/Gemfile.lock
+++ b/nixpkgs/pkgs/applications/graphics/image_optim/Gemfile.lock
@@ -20,4 +20,4 @@ DEPENDENCIES
   image_optim
 
 BUNDLED WITH
-   1.16.3
+   2.1.4
diff --git a/nixpkgs/pkgs/applications/graphics/image_optim/default.nix b/nixpkgs/pkgs/applications/graphics/image_optim/default.nix
index 385f9825e46f..ba437eab4122 100644
--- a/nixpkgs/pkgs/applications/graphics/image_optim/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/image_optim/default.nix
@@ -58,7 +58,7 @@ bundlerApp {
 
   meta = with lib; {
     description = "Command line tool and ruby interface to optimize (lossless compress, optionally lossy) jpeg, png, gif and svg images using external utilities (advpng, gifsicle, jhead, jpeg-recompress, jpegoptim, jpegrescan, jpegtran, optipng, pngcrush, pngout, pngquant, svgo)";
-    homepage    = https://github.com/toy/image_optim;
+    homepage    = "https://github.com/toy/image_optim";
     license     = licenses.mit;
     maintainers = with maintainers; [ srghma nicknovitski ];
     platforms   = platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/imagej/default.nix b/nixpkgs/pkgs/applications/graphics/imagej/default.nix
index 6472712bcb40..d47369f5094a 100644
--- a/nixpkgs/pkgs/applications/graphics/imagej/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/imagej/default.nix
@@ -32,7 +32,7 @@ let
         --add-flags "-jar $out/share/java/ij.jar -ijpath $out/share"
     '';
     meta = with stdenv.lib; {
-      homepage = https://imagej.nih.gov/ij/;
+      homepage = "https://imagej.nih.gov/ij/";
       description = "Image processing and analysis in Java";
       longDescription = ''
         ImageJ is a public domain Java image processing program
diff --git a/nixpkgs/pkgs/applications/graphics/imgcat/default.nix b/nixpkgs/pkgs/applications/graphics/imgcat/default.nix
index 1fa3ec8ccc68..5943632930c5 100644
--- a/nixpkgs/pkgs/applications/graphics/imgcat/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/imgcat/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "It's like cat, but for images";
-    homepage = https://github.com/eddieantonio/imgcat;
+    homepage = "https://github.com/eddieantonio/imgcat";
     license = licenses.isc;
     maintainers = with maintainers; [ jwiegley ];
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/imlibsetroot/default.nix b/nixpkgs/pkgs/applications/graphics/imlibsetroot/default.nix
index 8ca4d71bb56c..06549468efe9 100644
--- a/nixpkgs/pkgs/applications/graphics/imlibsetroot/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/imlibsetroot/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A Xinerama Aware Background Changer";
-    homepage = http://robotmonkeys.net/2010/03/30/imlibsetroot/;
+    homepage = "http://robotmonkeys.net/2010/03/30/imlibsetroot/";
     license = licenses.gpl2;
     platforms = platforms.linux;
     maintainers = with maintainers; [ dwarfmaster ];
diff --git a/nixpkgs/pkgs/applications/graphics/imv/default.nix b/nixpkgs/pkgs/applications/graphics/imv/default.nix
index 26a6cabf7841..88b4a8476658 100644
--- a/nixpkgs/pkgs/applications/graphics/imv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/imv/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A command line image viewer for tiling window managers";
-    homepage    = https://github.com/eXeC64/imv;
+    homepage    = "https://github.com/eXeC64/imv";
     license     = licenses.gpl2;
     maintainers = with maintainers; [ rnhmjoj markus1189 ];
     platforms   = [ "i686-linux" "x86_64-linux" ];
diff --git a/nixpkgs/pkgs/applications/graphics/inkscape/default.nix b/nixpkgs/pkgs/applications/graphics/inkscape/default.nix
index 3996b94ba14d..86fb6e034915 100644
--- a/nixpkgs/pkgs/applications/graphics/inkscape/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/inkscape/default.nix
@@ -1,54 +1,62 @@
-{ stdenv, fetchurl, fetchpatch, pkgconfig, perlPackages, libXft
-, libpng, zlib, popt, boehmgc, libxml2, libxslt, glib, gtkmm2
-, glibmm, libsigcxx, lcms, boost, gettext, makeWrapper
-, gsl, gtkspell2, cairo, python2, poppler, imagemagick, libwpg, librevenge
-, libvisio, libcdr, libexif, potrace, cmake
-, librsvg, wrapGAppsHook
+{ stdenv
+, boehmgc
+, boost
+, cairo
+, cmake
+, fetchpatch
+, fetchurl
+, gettext
+, glib
+, glibmm
+, gsl
+, gtkmm2
+, gtkspell2
+, imagemagick
+, lcms
+, libcdr
+, libexif
+, libpng
+, librevenge
+, librsvg
+, libsigcxx
+, libvisio
+, libwpg
+, libXft
+, libxml2
+, libxslt
+, makeWrapper
+, perlPackages
+, pkg-config
+, poppler
+, popt
+, potrace
+, python3
+, wrapGAppsHook
+, zlib
 }:
-
 let
-  python2Env = python2.withPackages(ps: with ps;
-    [ numpy lxml scour ]);
+  python3Env = python3.withPackages
+    (ps: with ps; [
+      numpy
+      lxml
+      scour
+    ]);
 in
-
 stdenv.mkDerivation rec {
-  name = "inkscape-0.92.4";
+  pname = "inkscape";
+  version = "0.92.5";
 
   src = fetchurl {
-    url = "https://media.inkscape.org/dl/resources/file/${name}.tar.bz2";
-    sha256 = "0pjinhjibfsz1aywdpgpj3k23xrsszpj4a1ya5562dkv2yl2vv2p";
+    url = "https://media.inkscape.org/dl/resources/file/${pname}-${version}.tar.bz2";
+    sha256 = "ge5/aeK9ZKlzQ9g5Wkp6eQWyG4YVZu1eXZF5F41Rmgs=";
   };
 
-  patches = [
-    (fetchpatch {
-      name = "inkscape-poppler_0_76_compat.patch";
-      url = "https://gitlab.com/inkscape/inkscape/commit/e831b034746f8dc3c3c1b88372751f6dcb974831.diff";
-      sha256 = "096rdyi6ppjq1h9jwwsm9hb99nggfrfinik8rm23jkn4h2zl01zf";
-    })
-    (fetchpatch {
-      name = "inkscape-poppler_0_82_compat.patch";
-      url = "https://gitlab.com/inkscape/inkscape/commit/835b6bb62be565efab986d5a3f30a672ad56c7eb.patch";
-      sha256 = "02c6sxi2w52b885vr3pgani6kvxp9gdqqk2jgiykkdzv70hhrnm7";
-    })
-    (fetchpatch {
-      name = "inkscape-poppler_0_83_compat.patch";
-      url = "https://gitlab.com/inkscape/inkscape/commit/b5360a807b12d4e8318475ffd0464b84882788b5.patch";
-      sha256 = "1p44rr2q2i3zkd1y1j7xgdcbgx8yvlq6hq92im8s0bkjby6p5cpz";
-    })
-  ];
-
   # Inkscape hits the ARGMAX when linking on macOS. It appears to be
   # CMake’s ARGMAX check doesn’t offer enough padding for NIX_LDFLAGS.
   # Setting strictDeps it avoids duplicating some dependencies so it
   # will leave us under ARGMAX.
   strictDeps = true;
 
-  unpackPhase = ''
-    cp $src ${name}.tar.bz2
-    tar xvjf ${name}.tar.bz2 > /dev/null
-    cd ${name}
-  '';
-
   postPatch = ''
     patchShebangs share/extensions
     patchShebangs fix-roff-punct
@@ -56,24 +64,52 @@ stdenv.mkDerivation rec {
     # Python is used at run-time to execute scripts, e.g., those from
     # the "Effects" menu.
     substituteInPlace src/extension/implementation/script.cpp \
-      --replace '"python-interpreter", "python"' '"python-interpreter", "${python2Env}/bin/python"'
+      --replace '"python-interpreter", "python"' '"python-interpreter", "${python3Env}/bin/python"'
   '';
 
-  nativeBuildInputs = [ pkgconfig cmake makeWrapper python2Env wrapGAppsHook ]
-    ++ (with perlPackages; [ perl XMLParser ]);
-  buildInputs = [
-    libXft libpng zlib popt boehmgc
-    libxml2 libxslt glib gtkmm2 glibmm libsigcxx lcms boost gettext
-    gsl poppler imagemagick libwpg librevenge
-    libvisio libcdr libexif potrace
+  nativeBuildInputs = [
+    pkg-config
+    cmake
+    makeWrapper
+    python3Env
+    wrapGAppsHook
+  ] ++ (with perlPackages; [
+    perl
+    XMLParser
+  ]);
 
+  buildInputs = [
+    boehmgc
+    boost
+    gettext
+    glib
+    glibmm
+    gsl
+    gtkmm2
+    imagemagick
+    lcms
+    libcdr
+    libexif
+    libpng
+    librevenge
     librsvg # for loading icons
-
-    python2Env perlPackages.perl
-  ] ++ stdenv.lib.optional (!stdenv.isDarwin) gtkspell2
-    ++ stdenv.lib.optional stdenv.isDarwin cairo;
-
-  enableParallelBuilding = true;
+    libsigcxx
+    libvisio
+    libwpg
+    libXft
+    libxml2
+    libxslt
+    perlPackages.perl
+    poppler
+    popt
+    potrace
+    python3Env
+    zlib
+  ] ++ stdenv.lib.optionals (!stdenv.isDarwin) [
+    gtkspell2
+  ] ++ stdenv.lib.optionals stdenv.isDarwin [
+    cairo
+  ];
 
   # Make sure PyXML modules can be found at run-time.
   postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
@@ -82,9 +118,10 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    license = "GPL";
-    homepage = https://www.inkscape.org;
     description = "Vector graphics editor";
+    homepage = "https://www.inkscape.org";
+    license = licenses.gpl3Plus;
+    maintainers = [ maintainers.jtojnar ];
     platforms = platforms.all;
     longDescription = ''
       Inkscape is a feature-rich vector graphics editor that edits
diff --git a/nixpkgs/pkgs/applications/graphics/ipe/default.nix b/nixpkgs/pkgs/applications/graphics/ipe/default.nix
index 0cb09ecb6430..6a2a8dbc18fe 100644
--- a/nixpkgs/pkgs/applications/graphics/ipe/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/ipe/default.nix
@@ -1,8 +1,8 @@
 { stdenv, fetchurl, makeWrapper, pkgconfig, zlib, freetype, cairo, lua5, texlive, ghostscript
-, libjpeg, libpng, qtbase
+, libjpeg, libpng, qtbase, mkDerivation
 }:
 
-stdenv.mkDerivation rec {
+mkDerivation rec {
   name = "ipe-7.2.13";
 
   src = fetchurl {
@@ -20,13 +20,9 @@ stdenv.mkDerivation rec {
     libjpeg libpng zlib qtbase freetype cairo lua5 texlive ghostscript
   ];
 
-  nativeBuildInputs = [ makeWrapper pkgconfig ];
+  nativeBuildInputs = [ pkgconfig ];
 
-  postFixup = ''
-    for prog in $out/bin/*; do
-      wrapProgram "$prog" --prefix PATH : "${texlive}/bin"
-    done
-  '';
+  qtWrapperArgs = [ ''--prefix PATH : ${texlive}/bin''  ];
 
   enableParallelBuilding = true;
 
@@ -34,7 +30,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "An editor for drawing figures";
-    homepage = http://ipe.otfried.org;
+    homepage = "http://ipe.otfried.org";
     license = stdenv.lib.licenses.gpl3Plus;
     longDescription = ''
       Ipe is an extensible drawing editor for creating figures in PDF and Postscript format.
diff --git a/nixpkgs/pkgs/applications/graphics/jpegoptim/default.nix b/nixpkgs/pkgs/applications/graphics/jpegoptim/default.nix
index cc1ca3a0ff2a..265ce82b8ac3 100644
--- a/nixpkgs/pkgs/applications/graphics/jpegoptim/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/jpegoptim/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Optimize JPEG files";
-    homepage = https://www.kokkonen.net/tjko/projects.html ;
+    homepage = "https://www.kokkonen.net/tjko/projects.html";
     license = licenses.gpl2;
     maintainers = [ maintainers.aristid ];
     platforms = platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/jpegrescan/default.nix b/nixpkgs/pkgs/applications/graphics/jpegrescan/default.nix
index 1c65c7da3a28..5fe35edabdf6 100644
--- a/nixpkgs/pkgs/applications/graphics/jpegrescan/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/jpegrescan/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "losslessly shrink any JPEG file";
-    homepage = https://github.com/kud/jpegrescan;
+    homepage = "https://github.com/kud/jpegrescan";
     license = licenses.publicDomain;
     maintainers = [ maintainers.ramkromberg ];
     platforms = platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/k3d/default.nix b/nixpkgs/pkgs/applications/graphics/k3d/default.nix
index 31085cd8023d..c74f35e4334a 100644
--- a/nixpkgs/pkgs/applications/graphics/k3d/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/k3d/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     (fetchpatch { /* glibmm 2.50 fix */
-      url = https://github.com/K-3D/k3d/commit/c65889d0652490d88a573e47de7a9324bf27bff2.patch;
+      url = "https://github.com/K-3D/k3d/commit/c65889d0652490d88a573e47de7a9324bf27bff2.patch";
       sha256 = "162icv1hicr2dirkb9ijacvg9bhz5j30yfwg7b45ijavk8rns62j";
     })
   ];
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A 3D editor with support for procedural editing";
-    homepage = http://www.k-3d.org/;
+    homepage = "http://www.k-3d.org/";
     platforms = platforms.linux;
     maintainers = [ maintainers.raskin ];
     license = licenses.gpl2;
diff --git a/nixpkgs/pkgs/applications/graphics/kodelife/default.nix b/nixpkgs/pkgs/applications/graphics/kodelife/default.nix
index 0b4e49dc2b59..e5aac9b8823d 100644
--- a/nixpkgs/pkgs/applications/graphics/kodelife/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/kodelife/default.nix
@@ -9,7 +9,7 @@
 
 stdenv.mkDerivation rec {
   pname = "kodelife";
-  version = "0.8.8.110";
+  version = "0.9.0.129";
 
   suffix = {
     aarch64-linux = "linux-arm64";
@@ -21,10 +21,10 @@ stdenv.mkDerivation rec {
   src = fetchzip {
     url = "https://hexler.net/pub/${pname}/${pname}-${version}-${suffix}.zip";
     sha256 = {
-      aarch64-linux = "1lcpj1mgkvksq1d08ibh59y0dmdh7zm77wi5ziqhg3p5g9nxyasd";
-      armv7l-linux  = "0sljy06302x567jqw5lagbyhpc3j140jk4wccacxjrbb6hcx3l42";
-      x86_64-darwin = "1b058s9kny026q395nj99v8hggxkgv43nnjkmx1a2siajw0db94c";
-      x86_64-linux  = "1q77cpz4gflrvfz6dm6np8sqbwyr235gq7y4pzs4hnqbrdzd4nwl";
+      aarch64-linux = "0z2fqlf156348ha3zhv16kvqdx68fbwbzch2gzjm9x1na9n5k1ra";
+      armv7l-linux  = "1ppwgrmgl1j2ws9mhrscvvkamd69a6xw7x35df6d30cyj97r0mzy";
+      x86_64-darwin = "0f8vn6m3xzsiyxm2ka5wkbp63wvzrix6g1xrbpvcm3v2llmychkl";
+      x86_64-linux  = "035c1nlw0nim057sz3axpkcgkafqbm6gpr8hwr097vlrqll6w3dv";
     }.${stdenv.hostPlatform.system} or (throw "Unsupported system: ${stdenv.hostPlatform.system}");
   };
 
@@ -32,6 +32,7 @@ stdenv.mkDerivation rec {
   dontBuild = true;
   dontStrip = true;
   dontPatchELF = true;
+  preferLocalBuild = true;
 
   installPhase = ''
     mkdir -p $out/bin
diff --git a/nixpkgs/pkgs/applications/graphics/krita/default.nix b/nixpkgs/pkgs/applications/graphics/krita/default.nix
index 3cc4834d756e..6ad67f75b218 100644
--- a/nixpkgs/pkgs/applications/graphics/krita/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/krita/default.nix
@@ -17,6 +17,9 @@ mkDerivation rec {
     sha256 = "1sx4j4brk71bas3cpqzk4bd8bknyl3x4fdg5pv4r7pcfd3vpq2vy";
   };
 
+  # *somtimes* fails with can't find ui_manager.h, also see https://github.com/NixOS/nixpkgs/issues/35359
+  enableParallelBuilding = false;
+
   nativeBuildInputs = [ cmake extra-cmake-modules python3Packages.sip makeWrapper ];
 
   buildInputs = [
@@ -45,7 +48,7 @@ mkDerivation rec {
 
   meta = with lib; {
     description = "A free and open source painting application";
-    homepage = https://krita.org/;
+    homepage = "https://krita.org/";
     maintainers = with maintainers; [ abbradar ];
     platforms = platforms.linux;
     license = licenses.gpl2;
diff --git a/nixpkgs/pkgs/applications/graphics/krop/default.nix b/nixpkgs/pkgs/applications/graphics/krop/default.nix
index 401e5f6fc570..818fc63535ed 100644
--- a/nixpkgs/pkgs/applications/graphics/krop/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/krop/default.nix
@@ -28,7 +28,7 @@ python3Packages.buildPythonApplication rec {
   doCheck = false;
 
   meta = {
-    homepage = http://arminstraub.com/software/krop;
+    homepage = "http://arminstraub.com/software/krop";
     description = "Graphical tool to crop the pages of PDF files";
     longDescription = ''
     Krop is a tool that allows you to optimise your PDF files, and remove
diff --git a/nixpkgs/pkgs/applications/graphics/leocad/default.nix b/nixpkgs/pkgs/applications/graphics/leocad/default.nix
index 201a4fe113e3..5e950eeac04b 100644
--- a/nixpkgs/pkgs/applications/graphics/leocad/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/leocad/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "CAD program for creating virtual LEGO models";
-    homepage = https://www.leocad.org/;
+    homepage = "https://www.leocad.org/";
     license = licenses.gpl2;
     platforms = platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/luminance-hdr/default.nix b/nixpkgs/pkgs/applications/graphics/luminance-hdr/default.nix
index 94899c937a86..811a907746d5 100644
--- a/nixpkgs/pkgs/applications/graphics/luminance-hdr/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/luminance-hdr/default.nix
@@ -1,9 +1,10 @@
-{ stdenv, cmake, fetchFromGitHub, pkgconfig, boost, exiv2, fftwFloat, gsl
+{ stdenv, mkDerivation, cmake, fetchFromGitHub, pkgconfig
+, boost, exiv2, fftwFloat, gsl
 , ilmbase, lcms2, libraw, libtiff, openexr
 , qtbase, qtdeclarative, qttools, qtwebengine, eigen
 }:
 
-stdenv.mkDerivation rec {
+mkDerivation rec {
   pname = "luminance-hdr";
   version = "2.6.0";
 
@@ -24,7 +25,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake pkgconfig ];
 
   meta = with stdenv.lib; {
-    homepage = http://qtpfsgui.sourceforge.net/;
+    homepage = "http://qtpfsgui.sourceforge.net/";
     description = "A complete open source solution for HDR photography";
     license = licenses.gpl2;
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/meh/default.nix b/nixpkgs/pkgs/applications/graphics/meh/default.nix
index 7ad8c388a203..0b2e5bc37774 100644
--- a/nixpkgs/pkgs/applications/graphics/meh/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/meh/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "A minimal image viewer using raw XLib";
-    homepage = https://www.johnhawthorn.com/meh/;
+    homepage = "https://www.johnhawthorn.com/meh/";
     license = stdenv.lib.licenses.mit;
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/meshlab/default.nix b/nixpkgs/pkgs/applications/graphics/meshlab/default.nix
index 9733f1e2efa0..6ac937dcb931 100644
--- a/nixpkgs/pkgs/applications/graphics/meshlab/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/meshlab/default.nix
@@ -126,7 +126,7 @@ in mkDerivation {
 
   meta = {
     description = "A system for processing and editing 3D triangular meshes.";
-    homepage = http://www.meshlab.net/;
+    homepage = "http://www.meshlab.net/";
     license = lib.licenses.gpl3;
     maintainers = with lib.maintainers; [viric];
     platforms = with lib.platforms; linux;
diff --git a/nixpkgs/pkgs/applications/graphics/minidjvu/default.nix b/nixpkgs/pkgs/applications/graphics/minidjvu/default.nix
index d629c776194d..2af79659cedb 100644
--- a/nixpkgs/pkgs/applications/graphics/minidjvu/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/minidjvu/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "minidjvu-0.8";
   src = fetchurl {
-    url = mirror://sourceforge/minidjvu/minidjvu-0.8.tar.gz;
+    url = "mirror://sourceforge/minidjvu/minidjvu-0.8.tar.gz";
     sha256 = "0jmpvy4g68k6xgplj9zsl6brg6vi81mx3nx2x9hfbr1f4zh95j79";
   };
 
@@ -18,7 +18,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    homepage = http://djvu.sourceforge.net/djview4.html;
+    homepage = "http://djvu.sourceforge.net/djview4.html";
     description = "Black-and-white djvu page encoder and decoder that use interpage information";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [ stdenv.lib.maintainers.viric ];
diff --git a/nixpkgs/pkgs/applications/graphics/mozjpeg/default.nix b/nixpkgs/pkgs/applications/graphics/mozjpeg/default.nix
index 63cc4a3a8d35..e17664a018ab 100644
--- a/nixpkgs/pkgs/applications/graphics/mozjpeg/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/mozjpeg/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
       The idea is to reduce transfer times for JPEGs on the Web, thus reducing page load times.
     '';
-    homepage = https://github.com/mozilla/mozjpeg ;
+    homepage = "https://github.com/mozilla/mozjpeg";
     license = stdenv.lib.licenses.bsd3;
     maintainers = [ stdenv.lib.maintainers.aristid ];
     platforms = stdenv.lib.platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/mtpaint/default.nix b/nixpkgs/pkgs/applications/graphics/mtpaint/default.nix
index 7274bdacd9d0..91278c9881fe 100644
--- a/nixpkgs/pkgs/applications/graphics/mtpaint/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/mtpaint/default.nix
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
       Due to its simplicity and lack of dependencies it runs well on
       GNU/Linux, Windows and older PC hardware.
     '';
-    homepage = http://mtpaint.sourceforge.net/;
+    homepage = "http://mtpaint.sourceforge.net/";
     license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.vklquevs ];
diff --git a/nixpkgs/pkgs/applications/graphics/nomacs/default.nix b/nixpkgs/pkgs/applications/graphics/nomacs/default.nix
index 48a79e8844e8..f0d9329bc5a9 100644
--- a/nixpkgs/pkgs/applications/graphics/nomacs/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/nomacs/default.nix
@@ -63,11 +63,11 @@ mkDerivation rec {
                 "-DUSE_SYSTEM_QUAZIP=ON"];
 
   meta = with stdenv.lib; {
-    homepage = https://nomacs.org;
+    homepage = "https://nomacs.org";
     description = "Qt-based image viewer";
     maintainers = [maintainers.ahmedtd];
     license = licenses.gpl3Plus;
-    repositories.git = https://github.com/nomacs/nomacs.git;
+    repositories.git = "https://github.com/nomacs/nomacs.git";
     inherit (qtbase.meta) platforms;
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/openimageio/2.x.nix b/nixpkgs/pkgs/applications/graphics/openimageio/2.x.nix
index 9c4a8b229391..89d49a151457 100644
--- a/nixpkgs/pkgs/applications/graphics/openimageio/2.x.nix
+++ b/nixpkgs/pkgs/applications/graphics/openimageio/2.x.nix
@@ -57,7 +57,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with stdenv.lib; {
-    homepage = http://www.openimageio.org;
+    homepage = "http://www.openimageio.org";
     description = "A library and tools for reading and writing images";
     license = licenses.bsd3;
     maintainers = with maintainers; [ goibhniu jtojnar ];
diff --git a/nixpkgs/pkgs/applications/graphics/openimageio/default.nix b/nixpkgs/pkgs/applications/graphics/openimageio/default.nix
index 23cad7e859df..1f2861e7109c 100644
--- a/nixpkgs/pkgs/applications/graphics/openimageio/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/openimageio/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with stdenv.lib; {
-    homepage = http://www.openimageio.org;
+    homepage = "http://www.openimageio.org";
     description = "A library and tools for reading and writing images";
     license = licenses.bsd3;
     maintainers = [ maintainers.goibhniu ];
diff --git a/nixpkgs/pkgs/applications/graphics/openscad/default.nix b/nixpkgs/pkgs/applications/graphics/openscad/default.nix
index 2c95f6d403f2..95af658ddd36 100644
--- a/nixpkgs/pkgs/applications/graphics/openscad/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/openscad/default.nix
@@ -77,7 +77,7 @@ mkDerivation rec {
       machine parts but pretty sure is not what you are looking for when you are more
       interested in creating computer-animated movies.
     '';
-    homepage = http://openscad.org/;
+    homepage = "http://openscad.org/";
     license = stdenv.lib.licenses.gpl2;
     platforms = stdenv.lib.platforms.unix;
     maintainers = with stdenv.lib.maintainers;
diff --git a/nixpkgs/pkgs/applications/graphics/panotools/default.nix b/nixpkgs/pkgs/applications/graphics/panotools/default.nix
index 719aca5096a5..c03bdd8331be 100644
--- a/nixpkgs/pkgs/applications/graphics/panotools/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/panotools/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   #doCheck = true;
 
   meta = {
-    homepage = http://panotools.sourceforge.net/;
+    homepage = "http://panotools.sourceforge.net/";
     description = "Free software suite for authoring and displaying virtual reality panoramas";
     license = stdenv.lib.licenses.gpl2Plus;
 
diff --git a/nixpkgs/pkgs/applications/graphics/paraview/default.nix b/nixpkgs/pkgs/applications/graphics/paraview/default.nix
index ac01c28ebd4b..15d70d143081 100644
--- a/nixpkgs/pkgs/applications/graphics/paraview/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/paraview/default.nix
@@ -59,7 +59,7 @@ mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.paraview.org/;
+    homepage = "http://www.paraview.org/";
     description = "3D Data analysis and visualization application";
     license = licenses.free;
     maintainers = with maintainers; [ guibert ];
diff --git a/nixpkgs/pkgs/applications/graphics/pbrt/default.nix b/nixpkgs/pkgs/applications/graphics/pbrt/default.nix
index 78f6d8bcbaff..fa3034cb3b07 100644
--- a/nixpkgs/pkgs/applications/graphics/pbrt/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/pbrt/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
   buildInputs = [ git flex bison cmake zlib ];
 
   meta = with stdenv.lib; {
-    homepage = http://pbrt.org;
+    homepage = "http://pbrt.org";
     description = "The renderer described in the third edition of the book 'Physically Based Rendering: From Theory To Implementation'";
     platforms = platforms.linux ;
     license = licenses.bsd2;
diff --git a/nixpkgs/pkgs/applications/graphics/pdfcpu/default.nix b/nixpkgs/pkgs/applications/graphics/pdfcpu/default.nix
index f31506ce7339..b127be821c13 100644
--- a/nixpkgs/pkgs/applications/graphics/pdfcpu/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/pdfcpu/default.nix
@@ -17,7 +17,7 @@ buildGoModule rec {
 
   meta = with stdenv.lib; {
     description = "A PDF processor written in Go";
-    homepage = https://pdfcpu.io;
+    homepage = "https://pdfcpu.io";
     license = licenses.asl20;
     maintainers = with maintainers; [ doronbehar ];
     platforms = platforms.all;
diff --git a/nixpkgs/pkgs/applications/graphics/photoflow/default.nix b/nixpkgs/pkgs/applications/graphics/photoflow/default.nix
index 78d16e692261..9fec8b99c1bd 100644
--- a/nixpkgs/pkgs/applications/graphics/photoflow/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/photoflow/default.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A fully non-destructive photo retouching program providing a complete RAW image editing workflow";
-    homepage = https://aferrero2707.github.io/PhotoFlow/;
+    homepage = "https://aferrero2707.github.io/PhotoFlow/";
     license = licenses.gpl3Plus;
     maintainers = [ maintainers.MtP ];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/photoqt/default.nix b/nixpkgs/pkgs/applications/graphics/photoqt/default.nix
index 14c49d30004c..71c63bc82aa2 100644
--- a/nixpkgs/pkgs/applications/graphics/photoqt/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/photoqt/default.nix
@@ -40,7 +40,7 @@ mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    homepage = https://photoqt.org/;
+    homepage = "https://photoqt.org/";
     description = "Simple, yet powerful and good looking image viewer";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = stdenv.lib.platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/phototonic/default.nix b/nixpkgs/pkgs/applications/graphics/phototonic/default.nix
index 5e7fb5cf7a0a..1c6c1b433547 100644
--- a/nixpkgs/pkgs/applications/graphics/phototonic/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/phototonic/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "An image viewer and organizer";
-    homepage = https://sourceforge.net/projects/phototonic/;
+    homepage = "https://sourceforge.net/projects/phototonic/";
     license = licenses.gpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ pSub ];
diff --git a/nixpkgs/pkgs/applications/graphics/pinta/default.nix b/nixpkgs/pkgs/applications/graphics/pinta/default.nix
index 140903766848..af51c78a1698 100644
--- a/nixpkgs/pkgs/applications/graphics/pinta/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/pinta/default.nix
@@ -74,7 +74,7 @@ buildDotnetPackage rec {
   '';
 
   meta = {
-    homepage = http://www.pinta-project.com/;
+    homepage = "http://www.pinta-project.com/";
     description = "Drawing/editing program modeled after Paint.NET";
     license = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ ];
diff --git a/nixpkgs/pkgs/applications/graphics/potrace/default.nix b/nixpkgs/pkgs/applications/graphics/potrace/default.nix
index 35ab27bcbf63..dd8e84349fad 100644
--- a/nixpkgs/pkgs/applications/graphics/potrace/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/potrace/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   doCheck = true;
 
   meta = with stdenv.lib; {
-    homepage = http://potrace.sourceforge.net/;
+    homepage = "http://potrace.sourceforge.net/";
     description = "A tool for tracing a bitmap, which means, transforming a bitmap into a smooth, scalable image";
     platforms = platforms.unix;
     maintainers = [ maintainers.pSub ];
diff --git a/nixpkgs/pkgs/applications/graphics/pqiv/default.nix b/nixpkgs/pkgs/applications/graphics/pqiv/default.nix
index 7639a2a9c761..505f28a24510 100644
--- a/nixpkgs/pkgs/applications/graphics/pqiv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/pqiv/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation (rec {
 
   meta = with stdenv.lib; {
     description = "Powerful image viewer with minimal UI";
-    homepage = http://www.pberndt.com/Programme/Linux/pqiv;
+    homepage = "http://www.pberndt.com/Programme/Linux/pqiv";
     license = licenses.gpl3;
     maintainers = [];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/processing/default.nix b/nixpkgs/pkgs/applications/graphics/processing/default.nix
index 9972ea757098..cad6a35ce3f6 100644
--- a/nixpkgs/pkgs/applications/graphics/processing/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/processing/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
     # do not download a file during build
     ${xmlstarlet}/bin/xmlstarlet ed --inplace -P -d '//get[@src="http://download.processing.org/reference.zip"]' build/build.xml
     install -D -m0444 ${fetchurl {
-                          url    = http://download.processing.org/reference.zip;
+                          url    = "http://download.processing.org/reference.zip";
                           sha256 = "198bpk8mzns6w5h0zdf50wr6iv7sgdi6v7jznj5rbsnpgyilxz35";
                         }
                        } ./java/reference.zip
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A language and IDE for electronic arts";
-    homepage = https://processing.org;
+    homepage = "https://processing.org";
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/qcomicbook/default.nix b/nixpkgs/pkgs/applications/graphics/qcomicbook/default.nix
index 4d416a7c106d..4f7e5b931f47 100644
--- a/nixpkgs/pkgs/applications/graphics/qcomicbook/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/qcomicbook/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/stolowski/QComicBook;
+    homepage = "https://github.com/stolowski/QComicBook";
     description = "Comic book reader in Qt5";
     license = licenses.gpl2;
 
diff --git a/nixpkgs/pkgs/applications/graphics/qimgv/default.nix b/nixpkgs/pkgs/applications/graphics/qimgv/default.nix
index 6402868b9221..2756d659edf3 100644
--- a/nixpkgs/pkgs/applications/graphics/qimgv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/qimgv/default.nix
@@ -1,6 +1,15 @@
-{ mkDerivation, fetchFromGitHub, lib
-, pkgconfig, cmake
-, exiv2, qtbase, qtimageformats, qtsvg
+{ mkDerivation
+, lib
+, fetchFromGitHub
+
+, cmake
+, pkgconfig
+
+, exiv2
+, mpv
+, qtbase
+, qtimageformats
+, qtsvg
 }:
 
 mkDerivation rec {
@@ -14,33 +23,32 @@ mkDerivation rec {
     sha256 = "0cmya06j466v0pirhxbzbj1vbz0346y7rbc1gbv4n9xcp6c6bln6";
   };
 
-  cmakeFlags = [
-    # Video support appears to be broken; the following gets printed upon
-    # attempting to view an mp4, webm, or mkv (and probably all video formats):
-    #
-    #   [VideoPlayerInitProxy] Error - could not load player library
-    #   "qimgv_player_mpv"
-    #
-    # GIFs are unaffected. If this ever gets addressed, all that is necessary is
-    # to add `mpv` to the arguments list and to `buildInputs`, and to remove
-    # `cmakeFlags`.
-    "-DVIDEO_SUPPORT=OFF"
-  ];
-
   nativeBuildInputs = [
-    pkgconfig
     cmake
+    pkgconfig
   ];
 
   buildInputs = [
     exiv2
+    mpv
     qtbase
     qtimageformats
     qtsvg
   ];
 
+  postPatch = ''
+    sed -i "s@/usr/bin/mpv@${mpv}/bin/mpv@" \
+      qimgv/settings.cpp
+  '';
+
+  # Wrap the library path so it can see `libqimgv_player_mpv.so`, which is used
+  # to play video files within qimgv itself.
+  qtWrapperArgs = [
+    "--prefix LD_LIBRARY_PATH : ${placeholder "out"}/lib"
+  ];
+
   meta = with lib; {
-    description = "Qt5 image viewer with optional video support";
+    description = "A Qt5 image viewer with optional video support";
     homepage = "https://github.com/easymodo/qimgv";
     license = licenses.gpl3;
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/qiv/default.nix b/nixpkgs/pkgs/applications/graphics/qiv/default.nix
index 750217d99188..d3dd917d7b7d 100644
--- a/nixpkgs/pkgs/applications/graphics/qiv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/qiv/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation (rec {
 
   meta = with stdenv.lib; {
     description = "Quick image viewer";
-    homepage = http://spiegl.de/qiv/;
+    homepage = "http://spiegl.de/qiv/";
     inherit version;
     license = licenses.gpl2;
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/qscreenshot/default.nix b/nixpkgs/pkgs/applications/graphics/qscreenshot/default.nix
index fafc76a76ffe..1653ea927206 100644
--- a/nixpkgs/pkgs/applications/graphics/qscreenshot/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/qscreenshot/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Simple creation and editing of screenshots";
-    homepage = https://sourceforge.net/projects/qscreenshot/;
+    homepage = "https://sourceforge.net/projects/qscreenshot/";
     license = licenses.gpl2;
     platforms = platforms.all;
     maintainers = [ maintainers.bjornfor ];
diff --git a/nixpkgs/pkgs/applications/graphics/rapid-photo-downloader/default.nix b/nixpkgs/pkgs/applications/graphics/rapid-photo-downloader/default.nix
index afdd2262e504..aa6db0accdba 100644
--- a/nixpkgs/pkgs/applications/graphics/rapid-photo-downloader/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/rapid-photo-downloader/default.nix
@@ -80,7 +80,7 @@ mkDerivationWith python3Packages.buildPythonApplication rec {
 
   meta = with stdenv.lib; {
     description = "Photo and video importer for cameras, phones, and memory cards";
-    homepage = https://www.damonlynch.net/rapid/;
+    homepage = "https://www.damonlynch.net/rapid/";
     license = licenses.gpl3;
     platforms = platforms.linux;
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/nixpkgs/pkgs/applications/graphics/rawtherapee/default.nix b/nixpkgs/pkgs/applications/graphics/rawtherapee/default.nix
index 3f89b7f8b3a3..812c26f56e59 100644
--- a/nixpkgs/pkgs/applications/graphics/rawtherapee/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/rawtherapee/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "RAW converter and digital photo processing software";
-    homepage = http://www.rawtherapee.com/;
+    homepage = "http://www.rawtherapee.com/";
     license = stdenv.lib.licenses.gpl3Plus;
     maintainers = with stdenv.lib.maintainers; [ jcumming mahe the-kenny ];
     platforms = with stdenv.lib.platforms; linux;
diff --git a/nixpkgs/pkgs/applications/graphics/renderdoc/default.nix b/nixpkgs/pkgs/applications/graphics/renderdoc/default.nix
index e345fcce01e3..bf0b92b6f6d4 100644
--- a/nixpkgs/pkgs/applications/graphics/renderdoc/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/renderdoc/default.nix
@@ -65,7 +65,7 @@ mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "A single-frame graphics debugger";
-    homepage = https://renderdoc.org/;
+    homepage = "https://renderdoc.org/";
     license = licenses.mit;
     longDescription = ''
       RenderDoc is a free MIT licensed stand-alone graphics debugger that
diff --git a/nixpkgs/pkgs/applications/graphics/runwayml/default.nix b/nixpkgs/pkgs/applications/graphics/runwayml/default.nix
index c3f747837e01..eb8ecc34b8f3 100644
--- a/nixpkgs/pkgs/applications/graphics/runwayml/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/runwayml/default.nix
@@ -37,7 +37,7 @@ in
 
   meta = with lib; {
     description = "Machine learning for creators";
-    homepage = https://runwayml.com/;
+    homepage = "https://runwayml.com/";
     license = licenses.unfree;
     maintainers = with maintainers; [ prusnak ];
     platforms = [ "x86_64-linux" ];
diff --git a/nixpkgs/pkgs/applications/graphics/sane/backends/airscan/default.nix b/nixpkgs/pkgs/applications/graphics/sane/backends/airscan/default.nix
new file mode 100644
index 000000000000..11529eee2107
--- /dev/null
+++ b/nixpkgs/pkgs/applications/graphics/sane/backends/airscan/default.nix
@@ -0,0 +1,27 @@
+{ lib, stdenv, fetchFromGitHub, pkg-config, avahi, libsoup, libjpeg
+, sane-backends, meson, ninja }:
+stdenv.mkDerivation rec {
+  pname = "sane-airscan";
+  version = "0.9.17";
+
+  nativeBuildInputs = [ meson ninja pkg-config ];
+  buildInputs = [ avahi libsoup libjpeg sane-backends ];
+
+  src = fetchFromGitHub {
+    owner = "alexpevzner";
+    repo = pname;
+    rev = version;
+    sha256 = "03y0c1z5s3wbvxa9nvji62w42cmvcgm2sw72j7wm831995q3abmx";
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/alexpevzner/sane-airscan";
+    description = "Scanner Access Now Easy - Apple AirScan (eSCL) driver";
+    longDescription = ''
+      sane-airscan: Linux support of Apple AirScan (eSCL) compatible document scanners.
+    '';
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ zaninime ];
+  };
+}
diff --git a/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/default.nix b/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/default.nix
index cd75088ea53c..22e8a2ca5360 100644
--- a/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/default.nix
@@ -86,7 +86,7 @@ in stdenv.mkDerivation rec {
 
   meta = {
     description = "Brother brscan4 sane backend driver";
-    homepage = http://www.brother.com;
+    homepage = "http://www.brother.com";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.unfree;
     maintainers = with stdenv.lib.maintainers; [ jraygauthier ];
diff --git a/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/udev_rules_type1.nix b/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/udev_rules_type1.nix
index da136a7f9e1e..682e401c069b 100644
--- a/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/udev_rules_type1.nix
+++ b/nixpkgs/pkgs/applications/graphics/sane/backends/brscan4/udev_rules_type1.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Brother type1 scanners udev rules";
-    homepage = http://www.brother.com;
+    homepage = "http://www.brother.com";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.unfree;
     maintainers = with stdenv.lib.maintainers; [ jraygauthier ];
diff --git a/nixpkgs/pkgs/applications/graphics/sane/backends/dsseries/default.nix b/nixpkgs/pkgs/applications/graphics/sane/backends/dsseries/default.nix
index d4165be3784f..37ac02987061 100644
--- a/nixpkgs/pkgs/applications/graphics/sane/backends/dsseries/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/sane/backends/dsseries/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Brother DSSeries SANE backend driver";
-    homepage = http://www.brother.com;
+    homepage = "http://www.brother.com";
     platforms = stdenv.lib.platforms.linux;
     license = stdenv.lib.licenses.unfree;
     maintainers = with stdenv.lib.maintainers; [ callahad ];
diff --git a/nixpkgs/pkgs/applications/graphics/sane/frontends.nix b/nixpkgs/pkgs/applications/graphics/sane/frontends.nix
index b00f8f6c58d7..188431bda6c6 100644
--- a/nixpkgs/pkgs/applications/graphics/sane/frontends.nix
+++ b/nixpkgs/pkgs/applications/graphics/sane/frontends.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Scanner Access Now Easy";
-    homepage    = http://www.sane-project.org/;
+    homepage    = "http://www.sane-project.org/";
     license     = licenses.gpl2Plus;
     maintainers = with maintainers; [ peti ];
     platforms   = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/sane/xsane.nix b/nixpkgs/pkgs/applications/graphics/sane/xsane.nix
index 09b431fdb116..22a8f4dc3bda 100644
--- a/nixpkgs/pkgs/applications/graphics/sane/xsane.nix
+++ b/nixpkgs/pkgs/applications/graphics/sane/xsane.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
     ++ stdenv.lib.optional gimpSupport gimp;
 
   meta = {
-    homepage = http://www.sane-project.org/;
+    homepage = "http://www.sane-project.org/";
     description = "Graphical scanning frontend for sane";
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = with stdenv.lib.maintainers; [peti];
diff --git a/nixpkgs/pkgs/applications/graphics/scantailor/advanced.nix b/nixpkgs/pkgs/applications/graphics/scantailor/advanced.nix
index f9d6c87675f7..e4598193469b 100644
--- a/nixpkgs/pkgs/applications/graphics/scantailor/advanced.nix
+++ b/nixpkgs/pkgs/applications/graphics/scantailor/advanced.nix
@@ -17,7 +17,7 @@ mkDerivation rec {
   buildInputs = [ libjpeg libpng libtiff boost qtbase ];
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/4lex4/scantailor-advanced;
+    homepage = "https://github.com/4lex4/scantailor-advanced";
     description = "Interactive post-processing tool for scanned pages";
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/nixpkgs/pkgs/applications/graphics/scantailor/default.nix b/nixpkgs/pkgs/applications/graphics/scantailor/default.nix
index 14efe48f30db..bc54f3aa627a 100644
--- a/nixpkgs/pkgs/applications/graphics/scantailor/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/scantailor/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation {
   enableParallelBuilding = true;
 
   meta = {
-    homepage = http://scantailor.org/;
+    homepage = "http://scantailor.org/";
     description = "Interactive post-processing tool for scanned pages";
 
     license = stdenv.lib.licenses.gpl3Plus;
diff --git a/nixpkgs/pkgs/applications/graphics/screencloud/default.nix b/nixpkgs/pkgs/applications/graphics/screencloud/default.nix
index 88bbbd9d8646..11e37c4bf649 100644
--- a/nixpkgs/pkgs/applications/graphics/screencloud/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/screencloud/default.nix
@@ -68,7 +68,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = https://screencloud.net/;
+    homepage = "https://screencloud.net/";
     description = "Client for Screencloud, an easy to use screenshot sharing tool";
     license = stdenv.lib.licenses.gpl2;
     maintainers = with stdenv.lib.maintainers; [ forkk ];
diff --git a/nixpkgs/pkgs/applications/graphics/shotwell/default.nix b/nixpkgs/pkgs/applications/graphics/shotwell/default.nix
index 79bc743fbf01..b03d0a01dd6f 100644
--- a/nixpkgs/pkgs/applications/graphics/shotwell/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/shotwell/default.nix
@@ -39,11 +39,11 @@
 
 stdenv.mkDerivation rec {
   pname = "shotwell";
-  version = "0.31.0";
+  version = "0.31.1";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${stdenv.lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "1pwq953wl7h9cvw7rvlr6pcbq9w28kkr7ddb8x2si81ngp0imwyx";
+    sha256 = "0mbgrad4d4snffw2z3rkhwqq1bkxdgy52pblx99vjadvpgspb034";
   };
 
   nativeBuildInputs = [
@@ -100,7 +100,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Popular photo organizer for the GNOME desktop";
-    homepage = https://wiki.gnome.org/Apps/Shotwell;
+    homepage = "https://wiki.gnome.org/Apps/Shotwell";
     license = licenses.lgpl21Plus;
     maintainers = with maintainers; [domenkozar];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/shutter/default.nix b/nixpkgs/pkgs/applications/graphics/shutter/default.nix
index dd41ee4c3f84..cddc99eebe29 100644
--- a/nixpkgs/pkgs/applications/graphics/shutter/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/shutter/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Screenshot and annotation tool";
-    homepage = https://shutter-project.org/;
+    homepage = "https://shutter-project.org/";
     license = licenses.gpl3Plus;
     platforms = platforms.all;
     maintainers = [ maintainers.bjornfor ];
diff --git a/nixpkgs/pkgs/applications/graphics/smartdeblur/default.nix b/nixpkgs/pkgs/applications/graphics/smartdeblur/default.nix
index 314b4007aad5..0df161cd4731 100644
--- a/nixpkgs/pkgs/applications/graphics/smartdeblur/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/smartdeblur/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   cmakeFlags = [ "-DUSE_SYSTEM_FFTW=ON" ];
 
   meta = {
-    homepage = https://github.com/Y-Vladimir/SmartDeblur;
+    homepage = "https://github.com/Y-Vladimir/SmartDeblur";
     description = "Tool for restoring blurry and defocused images";
     license = stdenv.lib.licenses.gpl3;
     maintainers = with stdenv.lib.maintainers; [ ];
diff --git a/nixpkgs/pkgs/applications/graphics/solvespace/default.nix b/nixpkgs/pkgs/applications/graphics/solvespace/default.nix
index 7046caad295e..bd084b4287dc 100644
--- a/nixpkgs/pkgs/applications/graphics/solvespace/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/solvespace/default.nix
@@ -6,7 +6,7 @@ stdenv.mkDerivation rec {
   name = "solvespace-2.3-20190501";
   rev = "e7b75f19c34c923780db776592b47152650d8f22";
   src = fetchgit {
-    url = https://github.com/solvespace/solvespace;
+    url = "https://github.com/solvespace/solvespace";
     inherit rev;
     sha256 = "07k4mbzxf0dmzwdhjx5nc09y7rn1schkaypsw9kz0l7ppylprpp2";
     fetchSubmodules = true;
@@ -46,6 +46,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3;
     maintainers = [ maintainers.edef ];
     platforms = platforms.linux;
-    homepage = http://solvespace.com;
+    homepage = "http://solvespace.com";
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/swingsane/default.nix b/nixpkgs/pkgs/applications/graphics/swingsane/default.nix
index f56646e5aedd..fc9132ec0b40 100644
--- a/nixpkgs/pkgs/applications/graphics/swingsane/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/swingsane/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
       simultaneous scan jobs, image transformation jobs (deskew, binarize,
       crop, etc), PDF and PNG output.
     '';
-    homepage = http://swingsane.com/;
+    homepage = "http://swingsane.com/";
     license = licenses.asl20;
     platforms = platforms.all;
   };
diff --git a/nixpkgs/pkgs/applications/graphics/sxiv/default.nix b/nixpkgs/pkgs/applications/graphics/sxiv/default.nix
index f54299583286..4cf0ae555789 100644
--- a/nixpkgs/pkgs/applications/graphics/sxiv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/sxiv/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Simple X Image Viewer";
-    homepage = https://github.com/muennich/sxiv;
+    homepage = "https://github.com/muennich/sxiv";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = stdenv.lib.platforms.linux;
     maintainers = with maintainers; [ jfrankenau ];
diff --git a/nixpkgs/pkgs/applications/graphics/synfigstudio/default.nix b/nixpkgs/pkgs/applications/graphics/synfigstudio/default.nix
index 188f7cb29343..e2ffd1602585 100644
--- a/nixpkgs/pkgs/applications/graphics/synfigstudio/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/synfigstudio/default.nix
@@ -119,7 +119,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A 2D animation program";
-    homepage = http://www.synfig.org;
+    homepage = "http://www.synfig.org";
     license = licenses.gpl2Plus;
     maintainers = [ maintainers.goibhniu ];
     platforms = platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/tesseract/tesseract3.nix b/nixpkgs/pkgs/applications/graphics/tesseract/tesseract3.nix
index 157c0b9742bf..dc9d4ac2d595 100644
--- a/nixpkgs/pkgs/applications/graphics/tesseract/tesseract3.nix
+++ b/nixpkgs/pkgs/applications/graphics/tesseract/tesseract3.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "OCR engine";
-    homepage = https://github.com/tesseract-ocr/tesseract;
+    homepage = "https://github.com/tesseract-ocr/tesseract";
     license = stdenv.lib.licenses.asl20;
     maintainers = with stdenv.lib.maintainers; [ viric earvstedt ];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
diff --git a/nixpkgs/pkgs/applications/graphics/tesseract/tesseract4.nix b/nixpkgs/pkgs/applications/graphics/tesseract/tesseract4.nix
index 95896337720a..d7c3cacc1f96 100644
--- a/nixpkgs/pkgs/applications/graphics/tesseract/tesseract4.nix
+++ b/nixpkgs/pkgs/applications/graphics/tesseract/tesseract4.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "OCR engine";
-    homepage = https://github.com/tesseract-ocr/tesseract;
+    homepage = "https://github.com/tesseract-ocr/tesseract";
     license = stdenv.lib.licenses.asl20;
     maintainers = with stdenv.lib.maintainers; [ viric earvstedt ];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
diff --git a/nixpkgs/pkgs/applications/graphics/timelapse-deflicker/default.nix b/nixpkgs/pkgs/applications/graphics/timelapse-deflicker/default.nix
index 8355545e8dd6..ac382bb63278 100644
--- a/nixpkgs/pkgs/applications/graphics/timelapse-deflicker/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/timelapse-deflicker/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Simple script to deflicker images taken for timelapses";
-    homepage = https://github.com/cyberang3l/timelapse-deflicker;
+    homepage = "https://github.com/cyberang3l/timelapse-deflicker";
     license = licenses.gpl3;
     maintainers = with maintainers; [ valeriangalliat ];
     platforms = platforms.unix;
diff --git a/nixpkgs/pkgs/applications/graphics/ufraw/default.nix b/nixpkgs/pkgs/applications/graphics/ufraw/default.nix
index 131d83f0d58e..9e05a41e8483 100644
--- a/nixpkgs/pkgs/applications/graphics/ufraw/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/ufraw/default.nix
@@ -64,7 +64,7 @@ stdenv.mkDerivation {
   '';
 
   meta = with stdenv.lib; {
-    homepage = https://github.com/sergiomb2/ufraw;
+    homepage = "https://github.com/sergiomb2/ufraw";
 
     description = "Utility to read and manipulate raw images from digital cameras";
 
diff --git a/nixpkgs/pkgs/applications/graphics/unigine-valley/default.nix b/nixpkgs/pkgs/applications/graphics/unigine-valley/default.nix
index 09abfc60a528..14ff5f9a519f 100644
--- a/nixpkgs/pkgs/applications/graphics/unigine-valley/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/unigine-valley/default.nix
@@ -107,7 +107,7 @@ in
 
     meta = {
       description = "The Unigine Valley GPU benchmarking tool";
-      homepage = http://unigine.com/products/benchmarks/valley/;
+      homepage = "http://unigine.com/products/benchmarks/valley/";
       license = stdenv.lib.licenses.unfree; # see also: $out/$instPath/documentation/License.pdf
       maintainers = [ stdenv.lib.maintainers.kierdavis ];
       platforms = ["x86_64-linux" "i686-linux"];
diff --git a/nixpkgs/pkgs/applications/graphics/viewnior/default.nix b/nixpkgs/pkgs/applications/graphics/viewnior/default.nix
index a80e89e72bcd..41463a7627ae 100644
--- a/nixpkgs/pkgs/applications/graphics/viewnior/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/viewnior/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation rec {
 
     license = stdenv.lib.licenses.gpl3;
 
-    homepage = http://siyanpanayotov.com/project/viewnior/;
+    homepage = "http://siyanpanayotov.com/project/viewnior/";
 
     maintainers = [ stdenv.lib.maintainers.smironov ];
 
diff --git a/nixpkgs/pkgs/applications/graphics/vimiv/default.nix b/nixpkgs/pkgs/applications/graphics/vimiv/default.nix
index fab85052df3b..b5e9d0b8cf2d 100644
--- a/nixpkgs/pkgs/applications/graphics/vimiv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/vimiv/default.nix
@@ -64,7 +64,7 @@ python3Packages.buildPythonApplication rec {
   postInstall = "make DESTDIR=\"$out\" install";
 
   meta = {
-    homepage = https://github.com/karlch/vimiv;
+    homepage = "https://github.com/karlch/vimiv";
     description = "An image viewer with Vim-like keybindings";
     license = lib.licenses.mit;
     platforms = lib.platforms.linux;
diff --git a/nixpkgs/pkgs/applications/graphics/wings/default.nix b/nixpkgs/pkgs/applications/graphics/wings/default.nix
index 8d6eca7ef32c..19c30f3ecc4d 100644
--- a/nixpkgs/pkgs/applications/graphics/wings/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/wings/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://www.wings3d.com/;
+    homepage = "http://www.wings3d.com/";
     description = "Subdivision modeler inspired by Nendo and Mirai from Izware";
     license = stdenv.lib.licenses.tcltk;
     maintainers = with stdenv.lib.maintainers; [viric];
diff --git a/nixpkgs/pkgs/applications/graphics/write_stylus/default.nix b/nixpkgs/pkgs/applications/graphics/write_stylus/default.nix
index 0f1020b0b078..b1bfbe3c4cf3 100644
--- a/nixpkgs/pkgs/applications/graphics/write_stylus/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/write_stylus/default.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.styluslabs.com/;
+    homepage = "http://www.styluslabs.com/";
     description = "Write is a word processor for handwriting.";
     platforms = platforms.linux;
     license = stdenv.lib.licenses.unfree;
diff --git a/nixpkgs/pkgs/applications/graphics/xaos/default.nix b/nixpkgs/pkgs/applications/graphics/xaos/default.nix
index e80362c386b9..767f3aa920bf 100644
--- a/nixpkgs/pkgs/applications/graphics/xaos/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/xaos/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    homepage = http://xaos.sourceforge.net/;
+    homepage = "http://xaos.sourceforge.net/";
     description = "Fractal viewer";
     license = stdenv.lib.licenses.gpl2Plus;
     platforms = [ "x86_64-linux" ];
diff --git a/nixpkgs/pkgs/applications/graphics/xara/default.nix b/nixpkgs/pkgs/applications/graphics/xara/default.nix
index 56388a8a2555..5e3c252435cd 100644
--- a/nixpkgs/pkgs/applications/graphics/xara/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/xara/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
   name = "xaralx-0.7r1785";
 
   src = fetchurl {
-    url = http://downloads2.xara.com/opensource/XaraLX-0.7r1785.tar.bz2;
+    url = "http://downloads2.xara.com/opensource/XaraLX-0.7r1785.tar.bz2";
     sha256 = "05xbzq1i1vw2mdsv7zjqfpxfv3g1j0g5kks0gq6sh373xd6y8lyh";
   };
 
diff --git a/nixpkgs/pkgs/applications/graphics/xfractint/default.nix b/nixpkgs/pkgs/applications/graphics/xfractint/default.nix
index ae4765fc9e76..8d36e4630dc5 100644
--- a/nixpkgs/pkgs/applications/graphics/xfractint/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/xfractint/default.nix
@@ -24,6 +24,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.unfree;
     maintainers = [stdenv.lib.maintainers.raskin];
     platforms = stdenv.lib.platforms.linux;
-    homepage = https://www.fractint.net/;
+    homepage = "https://www.fractint.net/";
   };
 }
diff --git a/nixpkgs/pkgs/applications/graphics/xournal/default.nix b/nixpkgs/pkgs/applications/graphics/xournal/default.nix
index 6d10a7cae231..8a5d9c3597b8 100644
--- a/nixpkgs/pkgs/applications/graphics/xournal/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/xournal/default.nix
@@ -56,7 +56,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://xournal.sourceforge.net/;
+    homepage = "http://xournal.sourceforge.net/";
     description = "Note-taking application (supposes stylus)";
     maintainers = [ maintainers.guibert ];
     license = licenses.gpl2;
diff --git a/nixpkgs/pkgs/applications/graphics/xzgv/default.nix b/nixpkgs/pkgs/applications/graphics/xzgv/default.nix
index de3f3a78988b..67f43faf99a3 100644
--- a/nixpkgs/pkgs/applications/graphics/xzgv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/xzgv/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     mkdir -p $out/share/{app-install/desktop,applications,info,pixmaps}
   '';
   meta = with stdenv.lib; {
-    homepage = https://sourceforge.net/projects/xzgv/;
+    homepage = "https://sourceforge.net/projects/xzgv/";
     description = "Picture viewer for X with a thumbnail-based selector";
     license = licenses.gpl2;
     maintainers = [ maintainers.womfoo ];
diff --git a/nixpkgs/pkgs/applications/graphics/zgv/default.nix b/nixpkgs/pkgs/applications/graphics/zgv/default.nix
index 7b14d7750c3a..6cc59a7e60bd 100644
--- a/nixpkgs/pkgs/applications/graphics/zgv/default.nix
+++ b/nixpkgs/pkgs/applications/graphics/zgv/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   patches = [
     (fetchpatch {
-    url = https://foss.aueb.gr/mirrors/linux/gentoo/media-gfx/zgv/files/zgv-5.9-libpng15.patch;
+    url = "https://foss.aueb.gr/mirrors/linux/gentoo/media-gfx/zgv/files/zgv-5.9-libpng15.patch";
     sha256 = "1blw9n04c28bnwcmcn64si4f5zpg42s8yn345js88fyzi9zm19xw";
     })
     ./switch.patch
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    homepage = http://www.svgalib.org/rus/zgv/;
+    homepage = "http://www.svgalib.org/rus/zgv/";
     description = "Picture viewer with a thumbnail-based selector";
     license = licenses.gpl2;
     maintainers = [ maintainers.vrthra ];