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-rw-r--r--pkgs/applications/audio/gpodder/default.nix2
-rw-r--r--pkgs/applications/audio/mp3splt/default.nix2
-rwxr-xr-xpkgs/applications/audio/vimpc/default.nix2
-rw-r--r--pkgs/applications/editors/elvis/default.nix2
-rw-r--r--pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix2
-rw-r--r--pkgs/applications/editors/mg/default.nix2
-rw-r--r--pkgs/applications/editors/nvi/default.nix2
-rw-r--r--pkgs/applications/graphics/cinepaint/default.nix2
-rw-r--r--pkgs/applications/graphics/gimp/2.8.nix2
-rw-r--r--pkgs/applications/graphics/gimp/plugins/default.nix8
-rw-r--r--pkgs/applications/graphics/paraview/default.nix3
-rw-r--r--pkgs/applications/misc/d4x/default.nix6
-rw-r--r--pkgs/applications/misc/vue/default.nix15
-rw-r--r--pkgs/applications/misc/xfontsel/default.nix2
-rw-r--r--pkgs/applications/misc/xlsfonts/default.nix2
-rw-r--r--pkgs/applications/networking/browsers/netsurf/haru.nix4
-rw-r--r--pkgs/applications/networking/browsers/opera/default.nix2
-rw-r--r--pkgs/applications/networking/cluster/rq/default.nix2
-rw-r--r--pkgs/applications/networking/remote/freerdp/default.nix2
-rw-r--r--pkgs/applications/science/logic/cvc3/default.nix11
-rw-r--r--pkgs/applications/science/logic/ott/default.nix2
-rw-r--r--pkgs/applications/science/logic/satallax/default.nix13
-rw-r--r--pkgs/applications/science/logic/twelf/default.nix2
-rw-r--r--pkgs/applications/science/misc/fityk/default.nix2
-rw-r--r--pkgs/applications/science/misc/vite/default.nix2
-rw-r--r--pkgs/applications/version-management/git-and-tools/fast-export/default.nix4
-rw-r--r--pkgs/applications/video/quvi/library.nix7
-rw-r--r--pkgs/applications/video/quvi/scripts.nix7
-rw-r--r--pkgs/applications/video/xbmc/default.nix2
-rw-r--r--pkgs/applications/window-managers/larswm/default.nix2
30 files changed, 56 insertions, 62 deletions
diff --git a/pkgs/applications/audio/gpodder/default.nix b/pkgs/applications/audio/gpodder/default.nix
index de5ef0551254..ebe847353dd9 100644
--- a/pkgs/applications/audio/gpodder/default.nix
+++ b/pkgs/applications/audio/gpodder/default.nix
@@ -66,7 +66,7 @@ in buildPythonPackage rec {
       for you. Listen directly on your computer or on your mobile devices.
     '';
     homepage = "http://gpodder.org/";
-    license = "GPLv3";
+    license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux ++ stdenv.lib.platforms.darwin;
     maintainers = [ stdenv.lib.maintainers.skeidel ];
   };
diff --git a/pkgs/applications/audio/mp3splt/default.nix b/pkgs/applications/audio/mp3splt/default.nix
index b1970a998d50..08d91498cc0a 100644
--- a/pkgs/applications/audio/mp3splt/default.nix
+++ b/pkgs/applications/audio/mp3splt/default.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "utility to split mp3, ogg vorbis and FLAC files without decoding";
     homepage = http://sourceforge.net/projects/mp3splt/;
-    license = "GPLv2";
+    license = stdenv.lib.licenses.gpl2;
     maintainers = [ stdenv.lib.maintainers.bosu ];
     platforms = stdenv.lib.platforms.unix;
   };
diff --git a/pkgs/applications/audio/vimpc/default.nix b/pkgs/applications/audio/vimpc/default.nix
index 3e365cae8e94..717262dbcb57 100755
--- a/pkgs/applications/audio/vimpc/default.nix
+++ b/pkgs/applications/audio/vimpc/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A vi/vim inspired client for the Music Player Daemon (mpd).";
     homepage = https://github.com/boysetsfrog/vimpc;
-    license = "GPL3";
+    license = stdenv.lib.licenses.gpl3;
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/editors/elvis/default.nix b/pkgs/applications/editors/elvis/default.nix
index e1d2ad69b1dd..0850dd0e7be0 100644
--- a/pkgs/applications/editors/elvis/default.nix
+++ b/pkgs/applications/editors/elvis/default.nix
@@ -35,6 +35,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://elvis.vi-editor.org/;
     description = "A vi clone for Unix and other operating systems";
-    license = "free";
+    license = stdenv.lib.licenses.free;
   };
 }
diff --git a/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix b/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix
index 32a036805edc..96d7619d387b 100644
--- a/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix
+++ b/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix
@@ -47,7 +47,7 @@ stdenv.mkDerivation (rec {
       interactive theorem provers), based on the customizable text editor Emacs.
     '';
     homepage = http://proofgeneral.inf.ed.ac.uk;
-    license = "GPLv2+";
+    license = stdenv.lib.licenses.gpl2Plus;
     platforms = stdenv.lib.platforms.unix;  # arbitrary choice
   };
 })
diff --git a/pkgs/applications/editors/mg/default.nix b/pkgs/applications/editors/mg/default.nix
index 6901aed774ba..45a527c7484e 100644
--- a/pkgs/applications/editors/mg/default.nix
+++ b/pkgs/applications/editors/mg/default.nix
@@ -24,7 +24,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://homepage.boetes.org/software/mg/;
     description = "Micro GNU/emacs, a portable version of the mg maintained by the OpenBSD team";
-    license = "public domain";
+    license = stdenv.lib.licenses.publicDomain;
     platforms = stdenv.lib.platforms.all;
   };
 }
diff --git a/pkgs/applications/editors/nvi/default.nix b/pkgs/applications/editors/nvi/default.nix
index 81e0dd35db95..ee9b775453c2 100644
--- a/pkgs/applications/editors/nvi/default.nix
+++ b/pkgs/applications/editors/nvi/default.nix
@@ -49,6 +49,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://www.bostic.com/vi/;
     description = "The Berkeley Vi Editor";
-    license = "free";
+    license = stdenv.lib.licenses.free;
   };
 }
diff --git a/pkgs/applications/graphics/cinepaint/default.nix b/pkgs/applications/graphics/cinepaint/default.nix
index 41a4b102a6f3..f1ca27eed803 100644
--- a/pkgs/applications/graphics/cinepaint/default.nix
+++ b/pkgs/applications/graphics/cinepaint/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = http://www.cinepaint.org/;
-    license = "free";
+    license = stdenv.lib.licenses.free;
     description = "Image editor which supports images over 8bpp and ICC profiles";
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = stdenv.lib.platforms.linux;
diff --git a/pkgs/applications/graphics/gimp/2.8.nix b/pkgs/applications/graphics/gimp/2.8.nix
index bd155c59c6b2..9f7643ad1c04 100644
--- a/pkgs/applications/graphics/gimp/2.8.nix
+++ b/pkgs/applications/graphics/gimp/2.8.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "The GNU Image Manipulation Program";
     homepage = http://www.gimp.org/;
-    license = "GPL";
+    license = stdenv.lib.licenses.gpl3Plus;
     platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/graphics/gimp/plugins/default.nix b/pkgs/applications/graphics/gimp/plugins/default.nix
index 7139bc71f3c1..c5350228dcf2 100644
--- a/pkgs/applications/graphics/gimp/plugins/default.nix
+++ b/pkgs/applications/graphics/gimp/plugins/default.nix
@@ -59,7 +59,7 @@ rec {
       sed -e 's,^\(GIMP_PLUGIN_DIR=\).*,\1'"$out/${gimp.name}-plugins", \
        -e 's,^\(GIMP_DATA_DIR=\).*,\1'"$out/share/${gimp.name}", -i configure
     '';
-    meta = { 
+    meta = {
       description = "The GIMP Animation Package";
       homepage = http://www.gimp.org;
       # The main code is given in GPLv3, but it has ffmpeg in it, and I think ffmpeg license
@@ -174,10 +174,10 @@ rec {
       sourceRoot = "${name}/src";
       buildPhase = "make gimp";
       installPhase = "installPlugins gmic_gimp";
-      meta = { 
+      meta = {
         description = "script language for image processing which comes with its open-source interpreter";
         homepage = http://gmic.sourceforge.net/repository.shtml;
-        license = "CeCILL FREE SOFTWARE LICENSE AGREEMENT";
+        license = stdenv.lib.licenses.cecill20;
         /*
         The purpose of this Free Software license agreement is to grant users
         the right to modify and redistribute the software governed by this
@@ -197,7 +197,7 @@ rec {
       # --enable-dst-correction - enable DST correction for file timestamps.
       # --enable-contrast - enable the contrast setting option.
       # --enable-interp-none: enable 'None' interpolation (mostly for debugging).
-      # --with-lensfun: use the lensfun library - experimental feature, read this before using it. 
+      # --with-lensfun: use the lensfun library - experimental feature, read this before using it.
       # --with-prefix=PREFIX - use also PREFIX as an input prefix for the build
       # --with-dosprefix=PREFIX - PREFIX in the the prefix in dos format (needed only for ms-window
     configureFlags = "--enable-extras --enable-dst-correction --enable-contrast";
diff --git a/pkgs/applications/graphics/paraview/default.nix b/pkgs/applications/graphics/paraview/default.nix
index cc42e1c40466..40f8d441d7e9 100644
--- a/pkgs/applications/graphics/paraview/default.nix
+++ b/pkgs/applications/graphics/paraview/default.nix
@@ -36,9 +36,8 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = "http://www.paraview.org/";
     description = "3D Data analysis and visualization application";
-    license = "free";
+    license = stdenv.lib.licenses.free;
     maintainers = with stdenv.lib.maintainers; [viric guibert];
     platforms = with stdenv.lib.platforms; linux;
   };
 }
-
diff --git a/pkgs/applications/misc/d4x/default.nix b/pkgs/applications/misc/d4x/default.nix
index 66fceec9a51b..3c146249dd0b 100644
--- a/pkgs/applications/misc/d4x/default.nix
+++ b/pkgs/applications/misc/d4x/default.nix
@@ -2,7 +2,7 @@
 
 stdenv.mkDerivation {
   name = "d4x-2.5.7.1";
-  
+
   inherit boost;
 
   src = fetchurl {
@@ -12,9 +12,9 @@ stdenv.mkDerivation {
 
   buildInputs = [ gtk glib pkgconfig openssl boost ];
 
-  meta = { 
+  meta = {
     description = "Graphical download manager";
     homepage = http://www.krasu.ru/soft/chuchelo/;
-    license = "perl";
+    license = with stdenv.lib.licenses; [ artistic1 gpl1Plus ];
   };
 }
diff --git a/pkgs/applications/misc/vue/default.nix b/pkgs/applications/misc/vue/default.nix
index 542f11f6e671..5133ad3c29eb 100644
--- a/pkgs/applications/misc/vue/default.nix
+++ b/pkgs/applications/misc/vue/default.nix
@@ -2,9 +2,9 @@ x@{builderDefsPackage
   , jre, unzip
   , ...}:
 builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
+(a :
+let
+  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++
     [];
 
   buildInputs = map (n: builtins.getAttr n x)
@@ -32,11 +32,11 @@ rec {
   doDeploy = a.fullDepEntry ''
     mkdir -p "$out"/{share/vue,bin}
     cp ${src} "$out/share/vue/vue.jar"
-    echo '#!${a.stdenv.shell}' >> "$out/bin/vue" 
-    echo '${a.jre}/bin/java -jar "'"$out/share/vue/vue.jar"'" "$@"' >> "$out/bin/vue" 
+    echo '#!${a.stdenv.shell}' >> "$out/bin/vue"
+    echo '${a.jre}/bin/java -jar "'"$out/share/vue/vue.jar"'" "$@"' >> "$out/bin/vue"
     chmod a+x "$out/bin/vue"
   '' ["addInputs" "defEnsureDir"];
-      
+
   meta = {
     description = "Visual Understanding Environment - mind mapping software";
     maintainers = with a.lib.maintainers;
@@ -45,7 +45,6 @@ rec {
     ];
     platforms = with a.lib.platforms;
       linux;
-    license = "free-noncopyleft"; # Apache License fork, actually
+    license = a.lib.licenses.free; # Apache License fork, actually
   };
 }) x
-
diff --git a/pkgs/applications/misc/xfontsel/default.nix b/pkgs/applications/misc/xfontsel/default.nix
index 2bb05fe44e07..15d054c2be2a 100644
--- a/pkgs/applications/misc/xfontsel/default.nix
+++ b/pkgs/applications/misc/xfontsel/default.nix
@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://www.x.org/;
     description = "Allows testing the fonts available in an X server";
-    license = "free";
+    license = stdenv.lib.licenses.free;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
   };
diff --git a/pkgs/applications/misc/xlsfonts/default.nix b/pkgs/applications/misc/xlsfonts/default.nix
index 06b09154ba55..7584ebf72fb1 100644
--- a/pkgs/applications/misc/xlsfonts/default.nix
+++ b/pkgs/applications/misc/xlsfonts/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://www.x.org/;
     description = "Lists the fonts available in the X server";
-    license = "free";
+    license = stdenv.lib.licenses.free;
     maintainers = with stdenv.lib.maintainers; [viric];
     platforms = with stdenv.lib.platforms; linux ++ darwin;
   };
diff --git a/pkgs/applications/networking/browsers/netsurf/haru.nix b/pkgs/applications/networking/browsers/netsurf/haru.nix
index 47f0c2f64552..7aa362c613fd 100644
--- a/pkgs/applications/networking/browsers/netsurf/haru.nix
+++ b/pkgs/applications/networking/browsers/netsurf/haru.nix
@@ -15,10 +15,10 @@ stdenv.mkDerivation {
 
   installPhase = "make PREFIX=$out install";
 
-  meta = { 
+  meta = {
     description = "cross platform, open source library for generating PDF files";
     homepage = http://libharu.org/wiki/Main_Page;
-    license = "ZLIB/LIBPNG"; # see README.
+    license = with stdenv.lib.licenses; [ libpng zlib ];
     maintainers = [args.lib.maintainers.marcweber];
     platforms = args.lib.platforms.linux;
     broken = true;
diff --git a/pkgs/applications/networking/browsers/opera/default.nix b/pkgs/applications/networking/browsers/opera/default.nix
index e1bcbf923677..d0fe7e91989d 100644
--- a/pkgs/applications/networking/browsers/opera/default.nix
+++ b/pkgs/applications/networking/browsers/opera/default.nix
@@ -82,6 +82,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://www.opera.com;
     description = "Web browser";
-    license = "unfree";
+    license = stdenv.lib.licenses.unfree;
   };
 }
diff --git a/pkgs/applications/networking/cluster/rq/default.nix b/pkgs/applications/networking/cluster/rq/default.nix
index 8935aeb2771a..fdf11adfb6c0 100644
--- a/pkgs/applications/networking/cluster/rq/default.nix
+++ b/pkgs/applications/networking/cluster/rq/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    license = "Ruby";
+    license = stdenv.lib.licenses.ruby;
     homepage = "http://www.codeforpeople.com/lib/ruby/rq/";
     description = "Simple cluster queue runner";
     longDescription = "rq creates instant linux clusters by managing priority work queues, even on a multi-core single machine. This cluster runner is easy to install and easy to manage, contrasting with the common complicated solutions.";
diff --git a/pkgs/applications/networking/remote/freerdp/default.nix b/pkgs/applications/networking/remote/freerdp/default.nix
index 8785837fbb93..092e6f53e493 100644
--- a/pkgs/applications/networking/remote/freerdp/default.nix
+++ b/pkgs/applications/networking/remote/freerdp/default.nix
@@ -60,6 +60,6 @@ stdenv.mkDerivation rec {
 
     homepage = http://www.freerdp.com/;
 
-    license = "free-non-copyleft";
+    license = stdenv.lib.licenses.free;
   };
 }
diff --git a/pkgs/applications/science/logic/cvc3/default.nix b/pkgs/applications/science/logic/cvc3/default.nix
index 07b87e3cf073..ce6e039c5b1b 100644
--- a/pkgs/applications/science/logic/cvc3/default.nix
+++ b/pkgs/applications/science/logic/cvc3/default.nix
@@ -2,9 +2,9 @@ x@{builderDefsPackage
   , flex, bison, gmp, perl
   , ...}:
 builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
+(a :
+let
+  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++
     ["gmp"];
 
   buildInputs = (map (n: builtins.getAttr n x)
@@ -33,7 +33,7 @@ rec {
     sed -e "s@ /bin/bash@bash@g" -i Makefile.std
     find . -exec sed -e "s@/usr/bin/perl@${perl}/bin/perl@g" -i '{}' ';'
   '') ["minInit" "doUnpack"];
-      
+
   meta = {
     description = "A prover for satisfiability modulo theory (SMT)";
     maintainers = with a.lib.maintainers;
@@ -42,7 +42,7 @@ rec {
     ];
     platforms = with a.lib.platforms;
       linux;
-    license = "free-noncopyleft";
+    license = a.lib.licenses.free;
     homepage = "http://www.cs.nyu.edu/acsys/cvc3/index.html";
   };
   passthru = {
@@ -51,4 +51,3 @@ rec {
     };
   };
 }) x
-
diff --git a/pkgs/applications/science/logic/ott/default.nix b/pkgs/applications/science/logic/ott/default.nix
index afe827f3ad98..293381d2888b 100644
--- a/pkgs/applications/science/logic/ott/default.nix
+++ b/pkgs/applications/science/logic/ott/default.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
       target-system terms.
     '';
     homepage = http://www.cl.cam.ac.uk/~pes20/ott;
-    license = "BSD3";
+    license = stdenv.lib.licenses.bsd3;
     maintainers = with stdenv.lib.maintainers; [ jwiegley ];
     platforms = stdenv.lib.platforms.unix;
   };
diff --git a/pkgs/applications/science/logic/satallax/default.nix b/pkgs/applications/science/logic/satallax/default.nix
index 2126a4d76d63..89a214c3f474 100644
--- a/pkgs/applications/science/logic/satallax/default.nix
+++ b/pkgs/applications/science/logic/satallax/default.nix
@@ -2,9 +2,9 @@ x@{builderDefsPackage
   , sbcl, zlib
   , ...}:
 builderDefsPackage
-(a :  
-let 
-  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ 
+(a :
+let
+  helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++
     [];
 
   buildInputs = map (n: builtins.getAttr n x)
@@ -47,11 +47,11 @@ rec {
 
     sbcl --load make.lisp
     ! ( ./test | grep ERROR )
-    
+
     mkdir -p "$out/bin"
     cp bin/satallax "$out/bin"
   '') ["defEnsureDir" "minInit" "addInputs" "doUnpack"];
-      
+
   meta = {
     description = "A higher-order logic prover";
     maintainers = with a.lib.maintainers;
@@ -60,7 +60,7 @@ rec {
     ];
     platforms = with a.lib.platforms;
       unix;
-    license = "free-noncopyleft";
+    license = a.lib.licenses.free;
     homepage = "http://www.ps.uni-saarland.de/~cebrown/satallax/";
   };
   passthru = {
@@ -69,4 +69,3 @@ rec {
     };
   };
 }) x
-
diff --git a/pkgs/applications/science/logic/twelf/default.nix b/pkgs/applications/science/logic/twelf/default.nix
index f9680b475797..4d97f0480bb3 100644
--- a/pkgs/applications/science/logic/twelf/default.nix
+++ b/pkgs/applications/science/logic/twelf/default.nix
@@ -39,7 +39,7 @@ stdenv.mkDerivation rec {
       Standard ML.
     '';
     homepage = http://twelf.org/wiki/Main_Page;
-    license = "MIT";
+    license = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ jwiegley ];
     platforms = stdenv.lib.platforms.unix;
   };
diff --git a/pkgs/applications/science/misc/fityk/default.nix b/pkgs/applications/science/misc/fityk/default.nix
index 4c93eef2b1c0..7a534fce4f67 100644
--- a/pkgs/applications/science/misc/fityk/default.nix
+++ b/pkgs/applications/science/misc/fityk/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Curve fitting and peak fitting software";
-    license = "GPL2";
+    license = stdenv.lib.licenses.gpl2;
     homepage = http://fityk.nieto.pl/;
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/pkgs/applications/science/misc/vite/default.nix b/pkgs/applications/science/misc/vite/default.nix
index 2e25ff582ee9..42c72fa47d41 100644
--- a/pkgs/applications/science/misc/vite/default.nix
+++ b/pkgs/applications/science/misc/vite/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation {
 
     homepage = http://vite.gforge.inria.fr/;
 
-    license = "CeCILL-A";
+    license = stdenv.lib.licenses.cecill20;
 
     maintainers = [ stdenv.lib.maintainers.ludo ];
     platforms = stdenv.lib.platforms.gnu;  # arbitrary choice
diff --git a/pkgs/applications/version-management/git-and-tools/fast-export/default.nix b/pkgs/applications/version-management/git-and-tools/fast-export/default.nix
index dcfcce1fcf63..562917ec0737 100644
--- a/pkgs/applications/version-management/git-and-tools/fast-export/default.nix
+++ b/pkgs/applications/version-management/git-and-tools/fast-export/default.nix
@@ -30,10 +30,10 @@ stdenv.mkDerivation {
     done
   '';
 
-  # usage: 
+  # usage:
   meta = {
       description = "import svn, mercurial into git";
       homepage = "http://repo.or.cz/w/fast-export.git";
-      license = "?"; # the .py file is GPLv2
+      license = stdenv.lib.licenses.gpl2;
   };
 }
diff --git a/pkgs/applications/video/quvi/library.nix b/pkgs/applications/video/quvi/library.nix
index 0fdd78fe1068..3fa426d9f6f9 100644
--- a/pkgs/applications/video/quvi/library.nix
+++ b/pkgs/applications/video/quvi/library.nix
@@ -11,12 +11,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ pkgconfig lua5 curl quvi_scripts libproxy libgcrypt ];
 
-  meta = { 
+  meta = {
     description = "Web video downloader";
     homepage = http://quvi.sf.net;
-    license = "LGPLv2.1+";
+    license = stdenv.lib.licenses.lgpl21Plus;
     platforms = stdenv.lib.platforms.linux;
-    maintainers = [ stdenv.lib.maintainers.mornfall ]; 
+    maintainers = [ stdenv.lib.maintainers.mornfall ];
   };
 }
-
diff --git a/pkgs/applications/video/quvi/scripts.nix b/pkgs/applications/video/quvi/scripts.nix
index 68b61fc453de..cdc53367d114 100644
--- a/pkgs/applications/video/quvi/scripts.nix
+++ b/pkgs/applications/video/quvi/scripts.nix
@@ -11,12 +11,11 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ pkgconfig ];
 
-  meta = { 
+  meta = {
     description = "Web video downloader";
     homepage = http://quvi.sf.net;
-    license = "LGPLv2.1+";
+    license = stdenv.lib.licenses.lgpl21Plus;
     platforms = stdenv.lib.platforms.linux;
-    maintainers = [ stdenv.lib.maintainers.mornfall ]; 
+    maintainers = [ stdenv.lib.maintainers.mornfall ];
   };
 }
-
diff --git a/pkgs/applications/video/xbmc/default.nix b/pkgs/applications/video/xbmc/default.nix
index 65a930a261c9..f7bddc50ef82 100644
--- a/pkgs/applications/video/xbmc/default.nix
+++ b/pkgs/applications/video/xbmc/default.nix
@@ -102,7 +102,7 @@ stdenv.mkDerivation rec {
     meta = with stdenv.lib; {
       homepage = http://xbmc.org/;
       description = "Media center";
-      license = "GPLv2";
+      license = stdenv.lib.licenses.gpl2;
       platforms = platforms.linux;
       maintainers = [ maintainers.iElectric maintainers.titanous ];
     };
diff --git a/pkgs/applications/window-managers/larswm/default.nix b/pkgs/applications/window-managers/larswm/default.nix
index e3fa4f9fc711..c88603892b5d 100644
--- a/pkgs/applications/window-managers/larswm/default.nix
+++ b/pkgs/applications/window-managers/larswm/default.nix
@@ -19,6 +19,6 @@ stdenv.mkDerivation {
   meta = {
     homepage = http://larswm.fnurt.net/;
     description = "9wm-like tiling window manager";
-    license = "free";
+    license = stdenv.lib.licenses.free;
   };
 }