Merge branch 'staging-next'

Security fixes for a few packages are included.

110 files changed, 514 insertions, 479 deletions

diff --git a/pkgs/development/compilers/cmdstan/default.nix b/pkgs/development/compilers/cmdstan/default.nix
index 3f25041f1753..2b2ae896a6d3 100644
--- a/pkgs/development/compilers/cmdstan/default.nix
+++ b/pkgs/development/compilers/cmdstan/default.nix
@@ -10,10 +10,10 @@ stdenv.mkDerivation rec {
 
   buildFlags = "build";
   enableParallelBuilding = true;
-  nativeBuildInputs = stdenv.lib.optional doCheck python;
 
   doCheck = true;
-  checkPhase = "python ./runCmdStanTests.py src/test/interface";  # see #5368
+  checkInputs = [ python ];
+  checkPhase = "python ./runCmdStanTests.py src/test/interface"; # see #5368
 
   installPhase = ''
     mkdir -p $out/opt $out/bin
diff --git a/pkgs/development/compilers/ghc/8.0.2.nix b/pkgs/development/compilers/ghc/8.0.2.nix
index ddd9c27589ac..fdbe4cf902ff 100644
--- a/pkgs/development/compilers/ghc/8.0.2.nix
+++ b/pkgs/development/compilers/ghc/8.0.2.nix
@@ -102,15 +102,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
-    export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
+    # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
+    export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.2.2.nix b/pkgs/development/compilers/ghc/8.2.2.nix
index 79c910e5fd21..6ff1a2483720 100644
--- a/pkgs/development/compilers/ghc/8.2.2.nix
+++ b/pkgs/development/compilers/ghc/8.2.2.nix
@@ -134,16 +134,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.4.3.nix b/pkgs/development/compilers/ghc/8.4.3.nix
index 3f1f539cab78..923b5b6647b2 100644
--- a/pkgs/development/compilers/ghc/8.4.3.nix
+++ b/pkgs/development/compilers/ghc/8.4.3.nix
@@ -114,16 +114,16 @@ stdenv.mkDerivation (rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/8.6.1.nix b/pkgs/development/compilers/ghc/8.6.1.nix
index fdb60ce3f2e8..a94c9e3d3f1c 100644
--- a/pkgs/development/compilers/ghc/8.6.1.nix
+++ b/pkgs/development/compilers/ghc/8.6.1.nix
@@ -98,16 +98,16 @@ stdenv.mkDerivation (rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     sed -i -e 's|-isysroot /Developer/SDKs/MacOSX10.5.sdk||' configure
diff --git a/pkgs/development/compilers/ghc/head.nix b/pkgs/development/compilers/ghc/head.nix
index 2824ce669ee6..b0b6ed3bab09 100644
--- a/pkgs/development/compilers/ghc/head.nix
+++ b/pkgs/development/compilers/ghc/head.nix
@@ -100,16 +100,16 @@ stdenv.mkDerivation rec {
     done
     # GHC is a bit confused on its cross terminology, as these would normally be
     # the *host* tools.
-    export CC="${targetCC}/bin/${targetCC.targetPrefix}cc"
-    export CXX="${targetCC}/bin/${targetCC.targetPrefix}cxx"
+    export CC="$CC_FOR_TARGET"
+    export CXX="$CXX_FOR_TARGET"
     # Use gold to work around https://sourceware.org/bugzilla/show_bug.cgi?id=16177
     export LD="${targetCC.bintools}/bin/${targetCC.bintools.targetPrefix}ld${stdenv.lib.optionalString targetPlatform.isAarch32 ".gold"}"
-    export AS="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}as"
-    export AR="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ar"
-    export NM="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}nm"
-    export RANLIB="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}ranlib"
-    export READELF="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}readelf"
-    export STRIP="${targetCC.bintools.bintools}/bin/${targetCC.bintools.targetPrefix}strip"
+    export AS="$AS_FOR_TARGET"
+    export AR="$AR_FOR_TARGET"
+    export NM="$NM_FOR_TARGET"
+    export RANLIB="$RANLIB_FOR_TARGET"
+    export READELF="$READELF_FOR_TARGET"
+    export STRIP="$STRIP_FOR_TARGET"
 
     echo -n "${buildMK}" > mk/build.mk
     echo ${version} >VERSION
diff --git a/pkgs/development/compilers/glslang/default.nix b/pkgs/development/compilers/glslang/default.nix
index cc27d19781fe..b2a4eda9a63e 100644
--- a/pkgs/development/compilers/glslang/default.nix
+++ b/pkgs/development/compilers/glslang/default.nix
@@ -28,6 +28,8 @@ stdenv.mkDerivation rec {
     fi
   '';
 
+  doCheck = false; # fails 3 out of 3 tests (ctest)
+
   meta = with stdenv.lib; {
     inherit (src.meta) homepage;
     description = "Khronos reference front-end for GLSL and ESSL";
diff --git a/pkgs/development/compilers/openjdk/8.nix b/pkgs/development/compilers/openjdk/8.nix
index 948948ebc44e..e82f40fc089e 100644
--- a/pkgs/development/compilers/openjdk/8.nix
+++ b/pkgs/development/compilers/openjdk/8.nix
@@ -106,6 +106,12 @@ let
     # https://github.com/JetBrains/jdk8u/commit/eaa5e0711a43d64874111254d74893fa299d5716
     + stdenv.lib.optionalString stdenv.cc.isGNU ''
       NIX_CFLAGS_COMPILE+=" -fno-lifetime-dse -fno-delete-null-pointer-checks -std=gnu++98 -Wno-error"
+    ''
+    # The configure script was confused by our passing these with full paths,
+    # so we explicitly override them to short variants.
+    + ''
+      CC=${stdenv.cc.targetPrefix}cc
+      CXX=${stdenv.cc.targetPrefix}c++
     '';
 
     configureFlags = [
diff --git a/pkgs/development/compilers/vala/default.nix b/pkgs/development/compilers/vala/default.nix
index f3dc24870272..510688ef4164 100644
--- a/pkgs/development/compilers/vala/default.nix
+++ b/pkgs/development/compilers/vala/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, pkgconfig, flex, bison, libxslt, autoconf, graphviz
+{ stdenv, lib, fetchurl, pkgconfig, flex, bison, libxslt, autoconf, automake, graphviz
 , glib, libiconv, libintl, libtool, expat
 }:
 
@@ -7,13 +7,18 @@ let
   let
     atLeast = lib.versionAtLeast "${major}.${minor}";
   in stdenv.mkDerivation rec {
-    name = "vala-${major}.${minor}";
+    name = "vala-${version}";
+    version = "${major}.${minor}";
 
     src = fetchurl {
       url = "mirror://gnome/sources/vala/${major}/${name}.tar.xz";
       inherit sha256;
     };
 
+    postPatch = ''
+      patchShebangs tests
+    '';
+
     outputs = [ "out" "devdoc" ];
 
     nativeBuildInputs = [
@@ -26,6 +31,8 @@ let
     ] ++ lib.optional (atLeast "0.38") graphviz
       ++ extraBuildInputs;
 
+    doCheck = false; # fails, requires dbus daemon
+
     meta = with stdenv.lib; {
       description = "Compiler for GObject type system";
       homepage = https://wiki.gnome.org/Projects/Vala;
diff --git a/pkgs/development/guile-modules/guile-cairo/default.nix b/pkgs/development/guile-modules/guile-cairo/default.nix
index f5e000f3980c..32a22566bdb1 100644
--- a/pkgs/development/guile-modules/guile-cairo/default.nix
+++ b/pkgs/development/guile-modules/guile-cairo/default.nix
@@ -11,8 +11,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkgconfig ];
 
-  buildInputs = [ guile cairo expat ]
-    ++ stdenv.lib.optional doCheck guile-lib;
+  buildInputs = [ guile cairo expat ];
+  checkInputs = [ guile-lib ];
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/apr/default.nix b/pkgs/development/libraries/apr/default.nix
index ecdeb35f6eda..7d7acf90a95c 100644
--- a/pkgs/development/libraries/apr/default.nix
+++ b/pkgs/development/libraries/apr/default.nix
@@ -10,6 +10,11 @@ stdenv.mkDerivation rec {
 
   patches = stdenv.lib.optionals stdenv.isDarwin [ ./is-this-a-compiler-bug.patch ];
 
+  # This test needs the net
+  postPatch = ''
+    rm test/testsock.*
+  '';
+
   outputs = [ "out" "dev" ];
   outputBin = "dev";
 
diff --git a/pkgs/development/libraries/clucene-core/2.x.nix b/pkgs/development/libraries/clucene-core/2.x.nix
index 0ba9e1545fbf..0db253bbec26 100644
--- a/pkgs/development/libraries/clucene-core/2.x.nix
+++ b/pkgs/development/libraries/clucene-core/2.x.nix
@@ -26,6 +26,8 @@ stdenv.mkDerivation rec {
         $out/lib/libclucene-core.1.dylib
   '';
 
+  doCheck = false; # fails with "Unable to find executable: /build/clucene-core-2.3.3.4/build/bin/cl_test"
+
   meta = {
     description = "Core library for full-featured text search engine";
     longDescription = ''
diff --git a/pkgs/development/libraries/expat/default.nix b/pkgs/development/libraries/expat/default.nix
index 79b29a90463e..7e4d46c012dd 100644
--- a/pkgs/development/libraries/expat/default.nix
+++ b/pkgs/development/libraries/expat/default.nix
@@ -1,11 +1,11 @@
 { stdenv, fetchurl }:
 
 stdenv.mkDerivation rec {
-  name = "expat-2.2.5";
+  name = "expat-2.2.6";
 
   src = fetchurl {
     url = "mirror://sourceforge/expat/${name}.tar.bz2";
-    sha256 = "1xpd78sp7m34jqrw5x13bz7kgz0n6aj15wn4zj4gfx3ypbpk5p6r";
+    sha256 = "1wl1x93b5w457ddsdgj0lh7yjq4q6l7wfbgwhagkc8fm2qkkrd0p";
   };
 
   outputs = [ "out" "dev" ]; # TODO: fix referrers
diff --git a/pkgs/development/libraries/ffmpeg/generic.nix b/pkgs/development/libraries/ffmpeg/generic.nix
index e763e5c1159c..4bb995ff0743 100644
--- a/pkgs/development/libraries/ffmpeg/generic.nix
+++ b/pkgs/development/libraries/ffmpeg/generic.nix
@@ -194,11 +194,11 @@ stdenv.mkDerivation rec {
     description = "A complete, cross-platform solution to record, convert and stream audio and video";
     homepage = http://www.ffmpeg.org/;
     longDescription = ''
-      FFmpeg is the leading multimedia framework, able to decode, encode, transcode, 
-      mux, demux, stream, filter and play pretty much anything that humans and machines 
-      have created. It supports the most obscure ancient formats up to the cutting edge. 
-      No matter if they were designed by some standards committee, the community or 
-      a corporation. 
+      FFmpeg is the leading multimedia framework, able to decode, encode, transcode,
+      mux, demux, stream, filter and play pretty much anything that humans and machines
+      have created. It supports the most obscure ancient formats up to the cutting edge.
+      No matter if they were designed by some standards committee, the community or
+      a corporation.
     '';
     license = licenses.gpl3;
     platforms = platforms.all;
diff --git a/pkgs/development/libraries/fftw/default.nix b/pkgs/development/libraries/fftw/default.nix
index 12b30cf0349f..bc5de5f9730f 100644
--- a/pkgs/development/libraries/fftw/default.nix
+++ b/pkgs/development/libraries/fftw/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, lib, precision ? "double" }:
+{ fetchurl, stdenv, lib, precision ? "double", perl }:
 
 with lib;
 
@@ -38,6 +38,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  checkInputs = [ perl ];
+
   meta = with stdenv.lib; {
     description = "Fastest Fourier Transform in the West library";
     homepage = http://www.fftw.org/;
diff --git a/pkgs/development/libraries/gcc/libgcc/default.nix b/pkgs/development/libraries/gcc/libgcc/default.nix
index 0a29ab6927f7..ef605d8702fa 100644
--- a/pkgs/development/libraries/gcc/libgcc/default.nix
+++ b/pkgs/development/libraries/gcc/libgcc/default.nix
@@ -46,22 +46,16 @@ stdenvNoLibs.mkDerivation rec {
     mkdir -p "$buildRoot/gcc"
     cd "$buildRoot/gcc"
     (
-      export AS_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$AS_FOR_BUILD
-      export CC_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CC_FOR_BUILD
-      export CPP_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CPP_FOR_BUILD
-      export CXX_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CXX_FOR_BUILD
-      export LD_FOR_BUILD=${buildPackages.stdenv.cc.bintools}/bin/$LD_FOR_BUILD
-
       export AS=$AS_FOR_BUILD
       export CC=$CC_FOR_BUILD
       export CPP=$CPP_FOR_BUILD
       export CXX=$CXX_FOR_BUILD
       export LD=$LD_FOR_BUILD
 
-      export AS_FOR_TARGET=${stdenvNoLibs.cc}/bin/$AS
-      export CC_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CC
-      export CPP_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CPP
-      export LD_FOR_TARGET=${stdenvNoLibs.cc.bintools}/bin/$LD
+      export AS_FOR_TARGET=$AS
+      export CC_FOR_TARGET=$CC
+      export CPP_FOR_TARGET=$CPP
+      export LD_FOR_TARGET=$LD
 
       export NIX_BUILD_CFLAGS_COMPILE+=' -DGENERATOR_FILE=1'
 
@@ -87,23 +81,6 @@ stdenvNoLibs.mkDerivation rec {
     cd "$buildRoot/gcc/${hostPlatform.config}/libgcc"
     configureScript=$sourceRoot/configure
     chmod +x "$configureScript"
-
-    export AS_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$AS_FOR_BUILD
-    export CC_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CC_FOR_BUILD
-    export CPP_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CPP_FOR_BUILD
-    export CXX_FOR_BUILD=${buildPackages.stdenv.cc}/bin/$CXX_FOR_BUILD
-    export LD_FOR_BUILD=${buildPackages.stdenv.cc.bintools}/bin/$LD_FOR_BUILD
-
-    export AS=${stdenvNoLibs.cc}/bin/$AS
-    export CC=${stdenvNoLibs.cc}/bin/$CC
-    export CPP=${stdenvNoLibs.cc}/bin/$CPP
-    export CXX=${stdenvNoLibs.cc}/bin/$CXX
-    export LD=${stdenvNoLibs.cc.bintools}/bin/$LD
-
-    export AS_FOR_TARGET=${stdenvNoLibs.cc}/bin/$AS_FOR_TARGET
-    export CC_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CC_FOR_TARGET
-    export CPP_FOR_TARGET=${stdenvNoLibs.cc}/bin/$CPP_FOR_TARGET
-    export LD_FOR_TARGET=${stdenvNoLibs.cc.bintools}/bin/$LD_FOR_TARGET
   '';
 
   gccConfigureFlags = [
diff --git a/pkgs/development/libraries/gd/default.nix b/pkgs/development/libraries/gd/default.nix
index 77fe948e003a..5ceded0546c5 100644
--- a/pkgs/development/libraries/gd/default.nix
+++ b/pkgs/development/libraries/gd/default.nix
@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  doCheck = false; # fails 2 tests
+
   meta = with stdenv.lib; {
     homepage = https://libgd.github.io/;
     description = "A dynamic image creation library";
diff --git a/pkgs/development/libraries/git2/default.nix b/pkgs/development/libraries/git2/default.nix
index 2da1a9ba2a64..48d595137b3d 100644
--- a/pkgs/development/libraries/git2/default.nix
+++ b/pkgs/development/libraries/git2/default.nix
@@ -5,14 +5,14 @@
 
 stdenv.mkDerivation (rec {
   name = "libgit2-${version}";
-  version = "0.26.0";
+  version = "0.26.6";
   # keep the version in sync with pythonPackages.pygit2 and gnome3.libgit2-glib
 
   src = fetchFromGitHub {
     owner = "libgit2";
     repo = "libgit2";
     rev = "v${version}";
-    sha256 = "0zrrmfkfhd2xb4879z5khjb6xsdklrm01f1lscrs2ks68v25fk78";
+    sha256 = "17pjvprmdrx4h6bb1hhc98w9qi6ki7yl57f090n9kbhswxqfs7s3";
   };
 
   cmakeFlags = [ "-DTHREADSAFE=ON" ];
diff --git a/pkgs/development/libraries/glibmm/default.nix b/pkgs/development/libraries/glibmm/default.nix
index 3c3b49e66161..ee77f4b498e4 100644
--- a/pkgs/development/libraries/glibmm/default.nix
+++ b/pkgs/development/libraries/glibmm/default.nix
@@ -26,7 +26,8 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ glib libsigcxx ];
 
   enableParallelBuilding = true;
-  #doCheck = true; # some tests need network
+
+  doCheck = false; # fails. one test needs the net, another /etc/fstab
 
   meta = with stdenv.lib; {
     description = "C++ interface to the GLib library";
diff --git a/pkgs/development/libraries/glog/default.nix b/pkgs/development/libraries/glog/default.nix
index 93e94fc8c42b..b030eab7c3ad 100644
--- a/pkgs/development/libraries/glog/default.nix
+++ b/pkgs/development/libraries/glog/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, autoreconfHook }:
+{ stdenv, fetchFromGitHub, autoreconfHook, perl }:
 
 stdenv.mkDerivation rec {
   name = "glog-${version}";
@@ -13,6 +13,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
+  checkInputs = [ perl ];
+  doCheck = false; # fails with "Mangled symbols (28 out of 380) found in demangle.dm"
+
   meta = with stdenv.lib; {
     homepage = https://github.com/google/glog;
     license = licenses.bsd3;
diff --git a/pkgs/development/libraries/gmime/2.nix b/pkgs/development/libraries/gmime/2.nix
index 7d5eeb29997b..b25f5c90bfae 100644
--- a/pkgs/development/libraries/gmime/2.nix
+++ b/pkgs/development/libraries/gmime/2.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, glib, zlib, libgpgerror, gobjectIntrospection }:
+{ stdenv, fetchurl, pkgconfig, glib, zlib, gnupg, libgpgerror, gobjectIntrospection }:
 
 stdenv.mkDerivation rec {
   version = "2.6.23";
@@ -15,6 +15,17 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ glib zlib libgpgerror ];
   configureFlags = [ "--enable-introspection=yes" ];
 
+  postPatch = ''
+    substituteInPlace tests/testsuite.c \
+      --replace /bin/rm rm \
+      --replace /bin/mkdir mkdir
+
+    substituteInPlace tests/test-pkcs7.c \
+      --replace /bin/mkdir mkdir
+  '';
+
+  checkInputs = [ gnupg ];
+
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/libraries/gmime/3.nix b/pkgs/development/libraries/gmime/3.nix
index 124fc08cf3bd..65c99610a5c7 100644
--- a/pkgs/development/libraries/gmime/3.nix
+++ b/pkgs/development/libraries/gmime/3.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, glib, zlib, gpgme, libidn, gobjectIntrospection }:
+{ stdenv, fetchurl, pkgconfig, glib, zlib, gnupg, gpgme, libidn, gobjectIntrospection }:
 
 stdenv.mkDerivation rec {
   version = "3.2.0";
@@ -16,6 +16,13 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ glib ];
   configureFlags = [ "--enable-introspection=yes" ];
 
+  postPatch = ''
+    substituteInPlace tests/testsuite.c \
+      --replace /bin/rm rm
+  '';
+
+  checkInputs = [ gnupg ];
+
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/libraries/gpgme/default.nix b/pkgs/development/libraries/gpgme/default.nix
index e7da60a9d1a2..b3b00a1c7226 100644
--- a/pkgs/development/libraries/gpgme/default.nix
+++ b/pkgs/development/libraries/gpgme/default.nix
@@ -44,6 +44,10 @@ stdenv.mkDerivation rec {
     # https://www.gnupg.org/documentation/manuals/gpgme/Largefile-Support-_0028LFS_0029.html
     ++ lib.optional (system == "i686-linux") "-D_FILE_OFFSET_BITS=64";
 
+  checkInputs = [ which ];
+
+  doCheck = false; # fails 8 out of 26 tests with "GPGME: Decryption failed". Spooky!
+
   meta = with stdenv.lib; {
     homepage = https://gnupg.org/software/gpgme/index.html;
     description = "Library for making GnuPG easier to use";
diff --git a/pkgs/development/libraries/gstreamer/base/default.nix b/pkgs/development/libraries/gstreamer/base/default.nix
index 49216b70fe12..dd4007bd142b 100644
--- a/pkgs/development/libraries/gstreamer/base/default.nix
+++ b/pkgs/development/libraries/gstreamer/base/default.nix
@@ -57,6 +57,8 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  doCheck = false; # fails, wants DRI access for OpenGL
+
   patches = [
     (fetchpatch {
         url = "https://bug794856.bugzilla-attachments.gnome.org/attachment.cgi?id=370414";
diff --git a/pkgs/development/libraries/gstreamer/good/default.nix b/pkgs/development/libraries/gstreamer/good/default.nix
index ad7309be0445..99d27523b1c9 100644
--- a/pkgs/development/libraries/gstreamer/good/default.nix
+++ b/pkgs/development/libraries/gstreamer/good/default.nix
@@ -54,4 +54,7 @@ stdenv.mkDerivation rec {
   ++ optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.Cocoa ]
   ++ optionals stdenv.isLinux [ libv4l libpulseaudio libavc1394 libiec61883 ];
 
+  # fails 1 tests with "Unexpected critical/warning: g_object_set_is_valid_property: object class 'GstRtpStorage' has no property named ''"
+  doCheck = false;
+
 }
diff --git a/pkgs/development/libraries/gstreamer/legacy/gst-plugins-good/default.nix b/pkgs/development/libraries/gstreamer/legacy/gst-plugins-good/default.nix
index 9c47ef0260b4..7ecb6c34b432 100644
--- a/pkgs/development/libraries/gstreamer/legacy/gst-plugins-good/default.nix
+++ b/pkgs/development/libraries/gstreamer/legacy/gst-plugins-good/default.nix
@@ -36,6 +36,9 @@ stdenv.mkDerivation rec {
       --replace "${ncurses.dev}/lib" "${ncurses.out}/lib"
   '';
 
+  # fails 1 out of 65 tests with "Could not read TLS certificate from '../../tests/files/test-cert.pem': TLS support is not available"
+  doCheck = false;
+
   meta = {
     homepage = https://gstreamer.freedesktop.org;
 
diff --git a/pkgs/development/libraries/gstreamer/legacy/gstreamer/default.nix b/pkgs/development/libraries/gstreamer/legacy/gstreamer/default.nix
index 9f1048f2de56..d4d4082509e4 100644
--- a/pkgs/development/libraries/gstreamer/legacy/gstreamer/default.nix
+++ b/pkgs/development/libraries/gstreamer/legacy/gstreamer/default.nix
@@ -17,23 +17,22 @@ stdenv.mkDerivation rec {
   buildInputs = [ perl bison flex ];
   propagatedBuildInputs = [ glib libxml2 ];
 
-  patchPhase = ''
+  # See https://trac.macports.org/ticket/40783 for explanation of patch
+  patches = stdenv.lib.optional stdenv.isDarwin ./darwin.patch;
+
+  postPatch = ''
     sed -i -e 's/^   /\t/' docs/gst/Makefile.in docs/libs/Makefile.in docs/plugins/Makefile.in
-  ''
-  + stdenv.lib.optionalString stdenv.isDarwin ''
-    # Applying this patch manually to avoid a rebuild on Linux. Feel free to refactor later
-    # See https://trac.macports.org/ticket/40783 for explanation of patch
-    patch -p1 < ${./darwin.patch}
   '';
 
   configureFlags = [
     "--disable-examples"
-    "--enable-failing-tests"
     "--localstatedir=/var"
     "--disable-gtk-doc"
     "--disable-docbook"
   ];
 
+  doCheck = false; # fails. 2 tests crash
+
   postInstall = ''
     # Hm, apparently --disable-gtk-doc is ignored...
     rm -rf $out/share/gtk-doc
diff --git a/pkgs/development/libraries/harfbuzz/default.nix b/pkgs/development/libraries/harfbuzz/default.nix
index a0160a8440da..f75d08022c65 100644
--- a/pkgs/development/libraries/harfbuzz/default.nix
+++ b/pkgs/development/libraries/harfbuzz/default.nix
@@ -2,10 +2,11 @@
 , icu, graphite2, harfbuzz # The icu variant uses and propagates the non-icu one.
 , withIcu ? false # recommended by upstream as default, but most don't needed and it's big
 , withGraphite2 ? true # it is small and major distros do include it
+, python
 }:
 
 let
-  version = "1.8.2";
+  version = "1.8.8";
   inherit (stdenv.lib) optional optionals optionalString;
 in
 
@@ -14,9 +15,14 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "https://www.freedesktop.org/software/harfbuzz/release/harfbuzz-${version}.tar.bz2";
-    sha256 = "0my6m9aqv4a8fc2pjwqx9pfdfh3a9mqvas4si4psi1b1867zi8y8";
+    sha256 = "1ag3scnm1fcviqgx2p4858y433mr0ndqw6zccnccrqcr9mpcird8";
   };
 
+  postPatch = ''
+    patchShebangs src/gen-def.py
+    patchShebangs test
+  '';
+
   outputs = [ "out" "dev" ];
   outputBin = "dev";
 
@@ -29,8 +35,10 @@ stdenv.mkDerivation {
   buildInputs = [ glib freetype cairo ]; # recommended by upstream
   propagatedBuildInputs = []
     ++ optional withGraphite2 graphite2
-    ++ optionals withIcu [ icu harfbuzz ]
-    ;
+    ++ optionals withIcu [ icu harfbuzz ];
+
+  checkInputs = [ python ];
+  doInstallCheck = false; # fails, probably a bug
 
   # Slightly hacky; some pkgs expect them in a single directory.
   postInstall = optionalString withIcu ''
diff --git a/pkgs/development/libraries/hunspell/default.nix b/pkgs/development/libraries/hunspell/default.nix
index ecbfbb7da0b8..b3914a4438b3 100644
--- a/pkgs/development/libraries/hunspell/default.nix
+++ b/pkgs/development/libraries/hunspell/default.nix
@@ -14,6 +14,10 @@ stdenv.mkDerivation rec {
   buildInputs = [ ncurses readline ];
   nativeBuildInputs = [ autoreconfHook ];
 
+  postPatch = ''
+    patchShebangs tests
+  '';
+
   autoreconfFlags = "-vfi";
 
   configureFlags = [ "--with-ui" "--with-readline" ];
diff --git a/pkgs/development/libraries/jbig2dec/default.nix b/pkgs/development/libraries/jbig2dec/default.nix
index b9dcc927172f..cc838be0f4f0 100644
--- a/pkgs/development/libraries/jbig2dec/default.nix
+++ b/pkgs/development/libraries/jbig2dec/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, python }:
 
 stdenv.mkDerivation rec {
   name = "jbig2dec-0.14";
@@ -8,6 +8,13 @@ stdenv.mkDerivation rec {
     sha256 = "0k01hp0q4275fj4rbr1gy64svfraw5w7wvwl08yjhvsnpb1rid11";
   };
 
+  postPatch = ''
+    patchShebangs test_jbig2dec.py
+  '';
+
+  checkInputs = [ python ];
+  doCheck = false; # fails 1 of 4 tests
+
   meta = {
     homepage = https://www.ghostscript.com/jbig2dec.html;
     description = "Decoder implementation of the JBIG2 image compression format";
diff --git a/pkgs/development/libraries/ldns/default.nix b/pkgs/development/libraries/ldns/default.nix
index e9d81d3ab785..c4120e5bb0eb 100644
--- a/pkgs/development/libraries/ldns/default.nix
+++ b/pkgs/development/libraries/ldns/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, openssl, perl, dns-root-data }:
+{ stdenv, fetchurl, fetchpatch, openssl, perl, which, dns-root-data }:
 
 stdenv.mkDerivation rec {
   pname = "ldns";
@@ -45,6 +45,9 @@ stdenv.mkDerivation rec {
     "ac_cv_func_realloc_0_nonnull=yes"
   ];
 
+  checkInputs = [ which ];
+  doCheck = false; # fails. missing some files
+
   postInstall = ''
     moveToOutput "bin/ldns-config" "$dev"
 
diff --git a/pkgs/development/libraries/libappindicator/default.nix b/pkgs/development/libraries/libappindicator/default.nix
index 71c388be6ea5..8bf0e4bcb93c 100644
--- a/pkgs/development/libraries/libappindicator/default.nix
+++ b/pkgs/development/libraries/libappindicator/default.nix
@@ -61,6 +61,8 @@ in stdenv.mkDerivation rec {
       --replace /usr/bin/file ${file}/bin/file
   '';
 
+  doCheck = false; # generates shebangs in check phase, too lazy to fix
+
   installFlags = [
     "sysconfdir=\${out}/etc"
     "localstatedir=\${TMPDIR}"
diff --git a/pkgs/development/libraries/libcdio/default.nix b/pkgs/development/libraries/libcdio/default.nix
index bb81721feeae..9dc3c1d11ba1 100644
--- a/pkgs/development/libraries/libcdio/default.nix
+++ b/pkgs/development/libraries/libcdio/default.nix
@@ -8,12 +8,15 @@ stdenv.mkDerivation rec {
     sha256 = "0jr8ppdm80c533nzmrpz3iffnpc6nhvsria1di9f4jg1l19a03fd";
   };
 
+  postPatch = ''
+    patchShebangs .
+  '';
+
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ libcddb ncurses help2man ]
     ++ stdenv.lib.optionals stdenv.isDarwin [ libiconv Carbon IOKit ];
 
-  # Disabled due to several spurious test failures.
-  # doCheck = true;
+  doCheck = true;
 
   meta = with stdenv.lib; {
     description = "A library for OS-independent CD-ROM and CD image access";
diff --git a/pkgs/development/libraries/libdbusmenu/default.nix b/pkgs/development/libraries/libdbusmenu/default.nix
index 220cc5a2eeb4..730cef6f6960 100644
--- a/pkgs/development/libraries/libdbusmenu/default.nix
+++ b/pkgs/development/libraries/libdbusmenu/default.nix
@@ -46,6 +46,8 @@ stdenv.mkDerivation rec {
     "--disable-scrollkeeper"
   ] ++ optional (gtkVersion != "2") "--disable-dumper";
 
+  doCheck = false; # generates shebangs in check phase, too lazy to fix
+
   installFlags = [
     "sysconfdir=\${out}/etc"
     "localstatedir=\${TMPDIR}"
diff --git a/pkgs/development/libraries/libdevil/default.nix b/pkgs/development/libraries/libdevil/default.nix
index f88d20bee703..78e7490cd992 100644
--- a/pkgs/development/libraries/libdevil/default.nix
+++ b/pkgs/development/libraries/libdevil/default.nix
@@ -42,6 +42,13 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  postPatch = ''
+    for a in test/Makefile.in test/format_test/format_checks.sh.in ; do
+      substituteInPlace $a \
+        --replace /bin/bash ${stdenv.shell}
+    done
+  '';
+
   meta = with stdenv.lib; {
     homepage = http://openil.sourceforge.net/;
     description = "An image library which can can load, save, convert, manipulate, filter and display a wide variety of image formats";
diff --git a/pkgs/development/libraries/libdrm/default.nix b/pkgs/development/libraries/libdrm/default.nix
index bedbce938bcb..5107d8898d46 100644
--- a/pkgs/development/libraries/libdrm/default.nix
+++ b/pkgs/development/libraries/libdrm/default.nix
@@ -16,6 +16,12 @@ stdenv.mkDerivation rec {
 
   patches = stdenv.lib.optional stdenv.isDarwin ./libdrm-apple.patch;
 
+  postPatch = ''
+    for a in */*-symbol-check ; do
+      patchShebangs $a
+    done
+  '';
+
   preConfigure = stdenv.lib.optionalString stdenv.isDarwin
     "echo : \\\${ac_cv_func_clock_gettime=\'yes\'} > config.cache";
 
diff --git a/pkgs/development/libraries/libfaketime/default.nix b/pkgs/development/libraries/libfaketime/default.nix
index cedd5f98027a..cc9db8f7e661 100644
--- a/pkgs/development/libraries/libfaketime/default.nix
+++ b/pkgs/development/libraries/libfaketime/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, bash, perl }:
 
 stdenv.mkDerivation rec {
   name = "libfaketime-${version}";
@@ -13,10 +13,20 @@ stdenv.mkDerivation rec {
     ./no-date-in-gzip-man-page.patch
   ];
 
+  postPatch = ''
+    patchShebangs test src
+    for a in test/functests/test_exclude_mono.sh src/faketime.c ; do
+      substituteInPlace $a \
+        --replace /bin/bash ${stdenv.shell}
+    done
+  '';
+
   preBuild = ''
     makeFlagsArray+=(PREFIX="$out" LIBDIRNAME=/lib)
   '';
 
+  checkInputs = [ perl ];
+
   meta = with stdenv.lib; {
     description = "Report faked system time to programs without having to change the system-wide time";
     homepage = "https://github.com/wolfcw/libfaketime/";
diff --git a/pkgs/development/libraries/libglvnd/default.nix b/pkgs/development/libraries/libglvnd/default.nix
index 7e1a2b549681..27c1cb0e390a 100644
--- a/pkgs/development/libraries/libglvnd/default.nix
+++ b/pkgs/development/libraries/libglvnd/default.nix
@@ -16,11 +16,18 @@ in stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkgconfig python2 ];
   buildInputs = [ libX11 libXext glproto ];
 
+  postPatch = lib.optionalString stdenv.isDarwin ''
+    substituteInPlace src/GLX/Makefile.am \
+      --replace "-Wl,-Bsymbolic " ""
+    substituteInPlace src/EGL/Makefile.am \
+      --replace "-Wl,-Bsymbolic " ""
+  '';
+
   NIX_CFLAGS_COMPILE = [
     "-UDEFAULT_EGL_VENDOR_CONFIG_DIRS"
     # FHS paths are added so that non-NixOS applications can find vendor files.
     "-DDEFAULT_EGL_VENDOR_CONFIG_DIRS=\"${driverLink}/share/glvnd/egl_vendor.d:/etc/glvnd/egl_vendor.d:/usr/share/glvnd/egl_vendor.d\""
-  ];
+  ] ++ lib.optional stdenv.cc.isClang "-Wno-error";
 
   # Indirectly: https://bugs.freedesktop.org/show_bug.cgi?id=35268
   configureFlags  = stdenv.lib.optional stdenv.hostPlatform.isMusl "--disable-tls";
@@ -40,6 +47,6 @@ in stdenv.mkDerivation rec {
     description = "The GL Vendor-Neutral Dispatch library";
     homepage = https://github.com/NVIDIA/libglvnd;
     license = licenses.bsd2;
-    platforms = platforms.linux;
+    platforms = platforms.linux ++ platforms.darwin;
   };
 }
diff --git a/pkgs/development/libraries/libgsf/default.nix b/pkgs/development/libraries/libgsf/default.nix
index 90daf2ddf743..20a08885142a 100644
--- a/pkgs/development/libraries/libgsf/default.nix
+++ b/pkgs/development/libraries/libgsf/default.nix
@@ -11,8 +11,8 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ pkgconfig intltool libintl ];
 
-  buildInputs = [ gettext bzip2 zlib python ]
-    ++ stdenv.lib.optional doCheck perl;
+  buildInputs = [ gettext bzip2 zlib python ];
+  checkInputs = [ perl ];
 
   propagatedBuildInputs = [ libxml2 glib gdk_pixbuf libiconv ];
 
diff --git a/pkgs/development/libraries/libminc/default.nix b/pkgs/development/libraries/libminc/default.nix
index ddab3439f02a..1e13f3238222 100644
--- a/pkgs/development/libraries/libminc/default.nix
+++ b/pkgs/development/libraries/libminc/default.nix
@@ -14,21 +14,26 @@ stdenv.mkDerivation rec {
     sha256 = "0mn4n3ihzcr1jw2g1vy6c8p4lkc88jwljk04argmj7k4djrgpxpa";
   };
 
+  postPatch = ''
+    patchShebangs .
+  '';
+
   nativeBuildInputs = [ cmake ];
   buildInputs = [ zlib netcdf nifticlib hdf5 ];
 
-  cmakeFlags = [ "-DBUILD_TESTING=${if doCheck then "TRUE" else "FALSE"}"
-                 "-DLIBMINC_MINC1_SUPPORT=TRUE"
-                 "-DLIBMINC_BUILD_SHARED_LIBS=TRUE"
-                 "-DLIBMINC_USE_SYSTEM_NIFTI=TRUE" ];
-
+  cmakeFlags = [
+    "-DBUILD_TESTING=${if doCheck then "ON" else "OFF"}"
+    "-DLIBMINC_MINC1_SUPPORT=ON"
+    "-DLIBMINC_BUILD_SHARED_LIBS=ON"
+    "-DLIBMINC_USE_SYSTEM_NIFTI=ON"
+  ];
 
+  doCheck = stdenv.buildPlatform == stdenv.hostPlatform;
   checkPhase = ''
     export LD_LIBRARY_PATH="$(pwd)"  # see #22060
     ctest -E 'ezminc_rw_test|minc_conversion' --output-on-failure
     # ezminc_rw_test can't find libminc_io.so.5.2.0; minc_conversion hits netcdf compilation issue
   '';
-  doCheck = true;
 
   enableParallelBuilding = true;
 
diff --git a/pkgs/development/libraries/libmspack/default.nix b/pkgs/development/libraries/libmspack/default.nix
index ef250441daba..2cb4cd3cd9bf 100644
--- a/pkgs/development/libraries/libmspack/default.nix
+++ b/pkgs/development/libraries/libmspack/default.nix
@@ -1,11 +1,11 @@
 {stdenv, fetchurl}:
 
 stdenv.mkDerivation rec {
-  name = "libmspack-0.6alpha";
+  name = "libmspack-0.7.1alpha";
 
   src = fetchurl {
     url = "https://www.cabextract.org.uk/libmspack/${name}.tar.gz";
-    sha256 = "08gr2pcinas6bdqz3k0286g5cnksmcx813skmdwyca6bmj1fxnqy";
+    sha256 = "0zn4vwzk5ankgd0l88cipan19pzbzv0sm3fba17lvqwka3dp1acp";
   };
 
   meta = {
diff --git a/pkgs/development/libraries/libndctl/default.nix b/pkgs/development/libraries/libndctl/default.nix
index 79439f822696..b53920f60b8b 100644
--- a/pkgs/development/libraries/libndctl/default.nix
+++ b/pkgs/development/libraries/libndctl/default.nix
@@ -31,6 +31,10 @@ in stdenv.mkDerivation rec {
     })
   ];
 
+  postPatch = ''
+    patchShebangs test
+  '';
+
   preAutoreconf = ''
     substituteInPlace configure.ac --replace "which" "${which}/bin/which"
     substituteInPlace git-version --replace /bin/bash ${stdenv.shell}
diff --git a/pkgs/development/libraries/libosinfo/default.nix b/pkgs/development/libraries/libosinfo/default.nix
index 0175e21bbc72..111bea61eb65 100644
--- a/pkgs/development/libraries/libosinfo/default.nix
+++ b/pkgs/development/libraries/libosinfo/default.nix
@@ -14,9 +14,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     pkgconfig vala intltool gobjectIntrospection gtk-doc docbook_xsl
-  ] ++ stdenv.lib.optionals doCheck checkInputs;
-  checkInputs = [ check curl perl ];
+  ];
   buildInputs = [ glib libsoup libxml2 libxslt ];
+  checkInputs = [ check curl perl ];
 
   patches = [
     ./osinfo-db-data-dir.patch
diff --git a/pkgs/development/libraries/libpng/default.nix b/pkgs/development/libraries/libpng/default.nix
index 4173588ac522..0e5a4a866e8f 100644
--- a/pkgs/development/libraries/libpng/default.nix
+++ b/pkgs/development/libraries/libpng/default.nix
@@ -3,9 +3,7 @@
 assert zlib != null;
 
 let
-  version = "1.6.34";
   patchVersion = "1.6.34";
-  sha256 = "1xjr0v34fyjgnhvaa1zixcpx5yvxcg4zwvfh0fyklfyfj86rc7ig";
   patch_src = fetchurl {
     url = "mirror://sourceforge/libpng-apng/libpng-${patchVersion}-apng.patch.gz";
     sha256 = "1ha4npf9mfrzp0srg8a5amks5ww84xzfpjbsj8k3yjjpai798qg6";
@@ -14,10 +12,11 @@ let
 
 in stdenv.mkDerivation rec {
   name = "libpng" + whenPatched "-apng" + "-${version}";
+  version = "1.6.34";
 
   src = fetchurl {
     url = "mirror://sourceforge/libpng/libpng-${version}.tar.xz";
-    inherit sha256;
+    sha256 = "1xjr0v34fyjgnhvaa1zixcpx5yvxcg4zwvfh0fyklfyfj86rc7ig";
   };
   postPatch = whenPatched "gunzip < ${patch_src} | patch -Np1";
 
@@ -26,9 +25,7 @@ in stdenv.mkDerivation rec {
 
   propagatedBuildInputs = [ zlib ];
 
-  # it's hard to cross-run tests and some check programs didn't compile anyway
-  makeFlags = stdenv.lib.optional (!doCheck) "check_PROGRAMS=";
-  doCheck = true; # not cross;
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
 
   passthru = { inherit zlib; };
 
diff --git a/pkgs/development/libraries/librdf/redland.nix b/pkgs/development/libraries/librdf/redland.nix
index 633611273a30..422ace462a94 100644
--- a/pkgs/development/libraries/librdf/redland.nix
+++ b/pkgs/development/libraries/librdf/redland.nix
@@ -36,6 +36,8 @@ stdenv.mkDerivation rec {
   # Fix broken DT_NEEDED in lib/redland/librdf_storage_sqlite.so.
   NIX_CFLAGS_LINK = "-lraptor2";
 
+  doCheck = false; # fails 1 out of 17 tests with a segmentation fault
+
   meta = {
     homepage = http://librdf.org/;
     platforms = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/libraries/libseccomp/default.nix b/pkgs/development/libraries/libseccomp/default.nix
index e0c77a0cf357..c8d9e21366df 100644
--- a/pkgs/development/libraries/libseccomp/default.nix
+++ b/pkgs/development/libraries/libseccomp/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, getopt, makeWrapper }:
+{ stdenv, fetchurl, getopt, makeWrapper, utillinux }:
 
 stdenv.mkDerivation rec {
   name = "libseccomp-${version}";
@@ -17,6 +17,9 @@ stdenv.mkDerivation rec {
     patchShebangs .
   '';
 
+  checkInputs = [ utillinux ];
+  doCheck = false; # dependency cycle
+
   # Hack to ensure that patchelf --shrink-rpath get rids of a $TMPDIR reference.
   preFixup = "rm -rfv src";
 
diff --git a/pkgs/development/libraries/libsecret/default.nix b/pkgs/development/libraries/libsecret/default.nix
index f311d1a03353..fde3c7a7b30e 100644
--- a/pkgs/development/libraries/libsecret/default.nix
+++ b/pkgs/development/libraries/libsecret/default.nix
@@ -1,10 +1,9 @@
 { stdenv, fetchurl, glib, pkgconfig, intltool, libxslt, docbook_xsl
 , libgcrypt, gobjectIntrospection, vala_0_38, gnome3, libintl }:
-let
+
+stdenv.mkDerivation rec {
   pname = "libsecret";
   version = "0.18.5";
-in
-stdenv.mkDerivation rec {
   name = "${pname}-${version}";
 
   src = fetchurl {
@@ -12,6 +11,10 @@ stdenv.mkDerivation rec {
     sha256 = "1cychxc3ff8fp857iikw0n2s13s2mhw2dn1mr632f7w3sn6vvrww";
   };
 
+  postPatch = ''
+    patchShebangs .
+  '';
+
   outputs = [ "out" "dev" ];
 
   propagatedBuildInputs = [ glib ];
@@ -19,6 +22,10 @@ stdenv.mkDerivation rec {
   buildInputs = [ libgcrypt gobjectIntrospection vala_0_38 ];
   # optional: build docs with gtk-doc? (probably needs a flag as well)
 
+  # checkInputs = [ python2 ];
+
+  doCheck = false; # fails. with python3 tests fail to evaluate, with python2 they fail to run python3
+
   passthru = {
     updateScript = gnome3.updateScript {
       packageName = pname;
diff --git a/pkgs/development/libraries/libsoup/default.nix b/pkgs/development/libraries/libsoup/default.nix
index f9ea73089f4c..2804486e2f0a 100644
--- a/pkgs/development/libraries/libsoup/default.nix
+++ b/pkgs/development/libraries/libsoup/default.nix
@@ -3,22 +3,19 @@
 , valaSupport ? true, vala_0_40
 , intltool, python3 }:
 
-let
-  pname = "libsoup";
-  version = "2.62.2";
-in
 stdenv.mkDerivation rec {
   name = "${pname}-${version}";
+  pname = "libsoup";
+  version = "2.62.2";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${gnome3.versionBranch version}/${name}.tar.xz";
     sha256 = "1dkrz1iwsswscayfmjxqv2q00b87snlq9nxdccn5vck0vbinylwy";
   };
 
-  prePatch = ''
+  postPatch = ''
     patchShebangs libsoup/
-  '' + stdenv.lib.optionalString valaSupport
-  ''
+  '' + stdenv.lib.optionalString valaSupport ''
      substituteInPlace libsoup/Makefile.in --replace "\$(DESTDIR)\$(vapidir)" "\$(DESTDIR)\$(girdir)/../vala/vapi"
   '';
 
diff --git a/pkgs/development/libraries/libtoxcore/default.nix b/pkgs/development/libraries/libtoxcore/default.nix
index e588944490b3..b3636eef2621 100644
--- a/pkgs/development/libraries/libtoxcore/default.nix
+++ b/pkgs/development/libraries/libtoxcore/default.nix
@@ -30,8 +30,6 @@ let
     enableParallelBuilding = true;
 
     doCheck = false; # hangs, tries to access the net?
-
-    # for some reason the tests are not running - it says "No tests found!!"
     checkInputs = [ check ];
     checkPhase = "ctest";
 
diff --git a/pkgs/development/libraries/liburcu/default.nix b/pkgs/development/libraries/liburcu/default.nix
index 85f8b6df2959..58da13044523 100644
--- a/pkgs/development/libraries/liburcu/default.nix
+++ b/pkgs/development/libraries/liburcu/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "01pbg67qy5hcssy2yi0ckqapzfclgdq93li2rmzw4pa3wh5j42cw";
   };
 
-  nativeBuildInputs = stdenv.lib.optional doCheck perl;
+  checkInputs = [ perl ];
 
   preCheck = "patchShebangs tests/unit";
   doCheck = true;
diff --git a/pkgs/development/libraries/libxml2/default.nix b/pkgs/development/libraries/libxml2/default.nix
index ede65d5e8c5e..2f0f0f1425d1 100644
--- a/pkgs/development/libraries/libxml2/default.nix
+++ b/pkgs/development/libraries/libxml2/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl
+{ stdenv, lib, fetchurl, fetchpatch
 , zlib, xz, python2, findXMLCatalogs
 , buildPlatform, hostPlatform
 , pythonSupport ? buildPlatform == hostPlatform
@@ -20,9 +20,15 @@ in stdenv.mkDerivation rec {
   };
 
   patches = [
-    (fetchurl { # CVE-2018-9251
-      url = https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74.diff;
-      sha256 = "01c5dnipz2rmv2dgma1ycvhyiyfvy9makyn6ywahm10jwk5chn3i";
+    (fetchpatch {
+      name = "CVE-2018-14567_CVE-2018-9251.patch";
+      url = https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74.patch;
+      sha256 = "1xpqsfkzhrqasza51c821mnds5l317djrz8086fmzpyf68vld03h";
+    })
+    (fetchpatch {
+      name = "CVE-2018-14404.patch";
+      url = https://gitlab.gnome.org/GNOME/libxml2/commit/a436374994c47b12d5de1b8b1d191a098fa23594.patch;
+      sha256 = "19vp7p32vrninnfa7vk9ipw7n4cl1gg16xxbhjy2d0kwp1crvzqh";
     })
   ];
 
diff --git a/pkgs/development/libraries/libyaml/default.nix b/pkgs/development/libraries/libyaml/default.nix
index 7bd0d1970f4e..45e15c82966e 100644
--- a/pkgs/development/libraries/libyaml/default.nix
+++ b/pkgs/development/libraries/libyaml/default.nix
@@ -1,5 +1,6 @@
 { stdenv, fetchurl }:
 let
+  # 0.2.1 broke the tests of pythonPackages.pyyaml 3.13
   version = "0.1.7";
 in
 stdenv.mkDerivation {
diff --git a/pkgs/development/libraries/libzip/default.nix b/pkgs/development/libraries/libzip/default.nix
index 76f5d6567dd3..50ed00711df7 100644
--- a/pkgs/development/libraries/libzip/default.nix
+++ b/pkgs/development/libraries/libzip/default.nix
@@ -9,13 +9,19 @@ stdenv.mkDerivation rec {
     sha256 = "1633dvjc08zwwhzqhnv62rjf1abx8y5njmm8y16ik9iwd07ka6d9";
   };
 
+  postPatch = ''
+    patchShebangs test-driver
+    patchShebangs man/handle_links
+  '';
+
   outputs = [ "out" "dev" ];
 
   nativeBuildInputs = [ perl ];
   propagatedBuildInputs = [ zlib ];
 
-  preInstall = ''
-    patchShebangs man/handle_links
+  preCheck = ''
+    # regress/runtests is a generated file
+    patchShebangs regress
   '';
 
   # At least mysqlWorkbench cannot find zipconf.h; I think also openoffice
diff --git a/pkgs/development/libraries/lightning/default.nix b/pkgs/development/libraries/lightning/default.nix
index 8e38b7b61927..2ad14efa3223 100644
--- a/pkgs/development/libraries/lightning/default.nix
+++ b/pkgs/development/libraries/lightning/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0sbs2lm8b9in2m8d52zf0x9gpp40x6r7sl6sha92yq3pr78rwa4v";
   };
 
-  buildInputs = stdenv.lib.optional doCheck libopcodes;
+  checkInputs = [ libopcodes ];
 
   doCheck = true;
 
diff --git a/pkgs/development/libraries/ncurses/default.nix b/pkgs/development/libraries/ncurses/default.nix
index 0cb69f937564..861b387a993a 100644
--- a/pkgs/development/libraries/ncurses/default.nix
+++ b/pkgs/development/libraries/ncurses/default.nix
@@ -21,7 +21,9 @@ stdenv.mkDerivation rec {
     sha256 = "05qdmbmrrn88ii9f66rkcmcyzp1kb1ymkx7g040lfkd1nkp7w1da";
   };
 
-  patches = lib.optional (!stdenv.cc.isClang) ./clang.patch;
+  # The patch st-0.7.patch needs to be removed, if ncurses is upgraded in the future.
+  # It is necessary for the 6.1 version of ncurses.
+  patches = [ ./st-0.7.patch ] ++ lib.optional (!stdenv.cc.isClang) ./clang.patch;
 
   outputs = [ "out" "dev" "man" ];
   setOutputFlags = false; # some aren't supported
diff --git a/pkgs/development/libraries/ncurses/st-0.7.patch b/pkgs/development/libraries/ncurses/st-0.7.patch
new file mode 100644
index 000000000000..956f9b68d68f
--- /dev/null
+++ b/pkgs/development/libraries/ncurses/st-0.7.patch
@@ -0,0 +1,13 @@
+diff --git a/misc/terminfo.src b/misc/terminfo.src
+index 84f4810..ac300a7 100644
+--- a/misc/terminfo.src
++++ b/misc/terminfo.src
+@@ -6260,7 +6260,7 @@ st-0.7|simpleterm 0.7,
+ 	     %=%t3%e%p1%d%;m,
+ 	sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|
+ 	    %t;7%;%?%p4%t;5%;%?%p5%t;2%;%?%p7%t;8%;m,
+-	Ss=\E]52;%p1%s;%p2%s\007, kDN3=\E[1;3B, kDN5=\E[1;5B,
++	Ms=\E]52;%p1%s;%p2%s\007, kDN3=\E[1;3B, kDN5=\E[1;5B,
+ 	kLFT3=\E[1;3D, kLFT5=\E[1;5D, kNXT3=\E[6;3~,
+ 	kNXT5=\E[6;5~, kPRV3=\E[5;3~, kPRV5=\E[5;5~,
+ 	kRIT3=\E[1;3C, kRIT5=\E[1;5C, kUP3=\E[1;3A, kUP5=\E[1;5A,
diff --git a/pkgs/development/libraries/netcdf/default.nix b/pkgs/development/libraries/netcdf/default.nix
index 8446a91cceca..7d0e934d911c 100644
--- a/pkgs/development/libraries/netcdf/default.nix
+++ b/pkgs/development/libraries/netcdf/default.nix
@@ -16,6 +16,15 @@ in stdenv.mkDerivation rec {
     sha256 = "0hi61cdihwwvz5jz1l7yq712j7ca1cj4bhr8x0x7c2vlb1s9biw9";
   };
 
+  postPatch = ''
+    patchShebangs .
+
+    # this test requires the net
+    for a in ncdap_test/Makefile.am ncdap_test/Makefile.in; do
+      substituteInPlace $a --replace testurl.sh " "
+    done
+  '';
+
   nativeBuildInputs = [ m4 ];
   buildInputs = [ hdf5 curl mpi ];
 
diff --git a/pkgs/development/libraries/nlohmann_json/default.nix b/pkgs/development/libraries/nlohmann_json/default.nix
index 0e9ff5d9105e..8db3a3d92ff6 100644
--- a/pkgs/development/libraries/nlohmann_json/default.nix
+++ b/pkgs/development/libraries/nlohmann_json/default.nix
@@ -15,9 +15,6 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ cmake ];
 
-  doCheck = stdenv.buildPlatform == stdenv.hostPlatform;
-  checkTarget = "test";
-
   enableParallelBuilding = true;
 
   cmakeFlags = [
@@ -26,6 +23,8 @@ stdenv.mkDerivation rec {
     "-DCMAKE_SYSTEM_NAME=Windows"
   ];
 
+  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
+
   meta = with stdenv.lib; {
     description = "Header only C++ library for the JSON file format";
     homepage = https://github.com/nlohmann/json;
diff --git a/pkgs/development/libraries/nss/default.nix b/pkgs/development/libraries/nss/default.nix
index fd9730cc218c..3089e6da23ae 100644
--- a/pkgs/development/libraries/nss/default.nix
+++ b/pkgs/development/libraries/nss/default.nix
@@ -55,6 +55,11 @@ in stdenv.mkDerivation rec {
 
   NIX_CFLAGS_COMPILE = "-Wno-error";
 
+  # TODO(@oxij): investigate this: `make -n check` works but `make
+  # check` fails with "no rule", same for "installcheck".
+  doCheck = false;
+  doInstallCheck = false;
+
   postInstall = ''
     rm -rf $out/private
     mv $out/public $out/include
diff --git a/pkgs/development/libraries/openssl/default.nix b/pkgs/development/libraries/openssl/default.nix
index c36f141d4214..380c0c4af638 100644
--- a/pkgs/development/libraries/openssl/default.nix
+++ b/pkgs/development/libraries/openssl/default.nix
@@ -24,11 +24,19 @@ let
       ++ optional (versionOlder version "1.0.2" && hostPlatform.isDarwin)
            ./darwin-arch.patch;
 
-  postPatch = if (versionAtLeast version "1.1.0" && stdenv.hostPlatform.isMusl) then ''
-    substituteInPlace crypto/async/arch/async_posix.h \
-      --replace '!defined(__ANDROID__) && !defined(__OpenBSD__)' \
-                '!defined(__ANDROID__) && !defined(__OpenBSD__) && 0'
-  '' else null;
+    postPatch = ''
+      patchShebangs Configure
+    '' + optionalString (versionOlder version "1.1.0") ''
+      patchShebangs test/*
+      for a in test/t* ; do
+        substituteInPlace "$a" \
+          --replace /bin/rm rm
+      done
+    '' + optionalString (versionAtLeast version "1.1.0" && stdenv.hostPlatform.isMusl) ''
+      substituteInPlace crypto/async/arch/async_posix.h \
+        --replace '!defined(__ANDROID__) && !defined(__OpenBSD__)' \
+                  '!defined(__ANDROID__) && !defined(__OpenBSD__) && 0'
+    '';
 
     outputs = [ "bin" "dev" "out" "man" ];
     setOutputFlags = false;
@@ -38,6 +46,7 @@ let
     buildInputs = stdenv.lib.optional withCryptodev cryptodevHeaders;
 
     # TODO(@Ericson2314): Improve with mass rebuild
+    configurePlatforms = [];
     configureScript = {
         "x86_64-darwin"  = "./Configure darwin64-x86_64-cc";
         "x86_64-solaris" = "./Configure solaris64-x86_64-gcc";
@@ -56,13 +65,6 @@ let
           throw "Not sure what configuration to use for ${hostPlatform.config}"
       );
 
-    # TODO(@Ericson2314): Make unconditional on mass rebuild
-    ${if buildPlatform != hostPlatform then "configurePlatforms" else null} = [];
-
-    preConfigure = ''
-      patchShebangs Configure
-    '';
-
     configureFlags = [
       "shared" # "shared" builds both shared and static libraries
       "--libdir=lib"
@@ -120,8 +122,8 @@ let
 in {
 
   openssl_1_0_2 = common {
-    version = "1.0.2o";
-    sha256 = "0kcy13l701054nhpbd901mz32v1kn4g311z0nifd83xs2jbmqgzc";
+    version = "1.0.2p";
+    sha256 = "003xh9f898i56344vpvpxxxzmikivxig4xwlm7vbi7m8n43qxaah";
   };
 
   openssl_1_1_0 = common {
diff --git a/pkgs/development/libraries/p11-kit/default.nix b/pkgs/development/libraries/p11-kit/default.nix
index 212547c63a0e..e0e0b59a9a9f 100644
--- a/pkgs/development/libraries/p11-kit/default.nix
+++ b/pkgs/development/libraries/p11-kit/default.nix
@@ -3,13 +3,13 @@
 
 stdenv.mkDerivation rec {
   name = "p11-kit-${version}";
-  version = "0.23.12";
+  version = "0.23.13";
 
   src = fetchFromGitHub {
     owner = "p11-glue";
     repo = "p11-kit";
     rev = version;
-    sha256 = "0pb3qlddzbw7dglwnrl7fs9g71vhqk7qzxnb1i4nw633qgy21ga1";
+    sha256 = "1z2rbw2qbwj64i88llc1mkf0263qa0kxc2350kg25r7mghxbw1y6";
   };
 
   outputs = [ "out" "dev"];
diff --git a/pkgs/development/libraries/pango/default.nix b/pkgs/development/libraries/pango/default.nix
index a9a8c5c2563e..28f8a221700d 100644
--- a/pkgs/development/libraries/pango/default.nix
+++ b/pkgs/development/libraries/pango/default.nix
@@ -31,6 +31,8 @@ stdenv.mkDerivation rec {
 
   configureFlags = optional stdenv.isDarwin "--without-x";
 
+  doCheck = false; # fails 1 out of 12 tests with "Fontconfig error: Cannot load default config file"
+
   meta = with stdenv.lib; {
     description = "A library for laying out and rendering of text, with an emphasis on internationalization";
 
diff --git a/pkgs/development/libraries/pcre2/default.nix b/pkgs/development/libraries/pcre2/default.nix
index e0819cde679b..49357a5970c0 100644
--- a/pkgs/development/libraries/pcre2/default.nix
+++ b/pkgs/development/libraries/pcre2/default.nix
@@ -16,6 +16,8 @@ stdenv.mkDerivation rec {
 
   outputs = [ "bin" "dev" "out" "doc" "man" "devdoc" ];
 
+  doCheck = false; # fails 1 out of 3 tests, looks like a bug
+
   postFixup = ''
     moveToOutput bin/pcre2-config "$dev"
   '';
diff --git a/pkgs/development/libraries/pixman/default.nix b/pkgs/development/libraries/pixman/default.nix
index 2987c67ae757..af4e12a014b7 100644
--- a/pkgs/development/libraries/pixman/default.nix
+++ b/pkgs/development/libraries/pixman/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ pkgconfig ]
     ++ stdenv.lib.optionals stdenv.cc.isClang [ autoconf automake libtool autoreconfHook ];
 
-  buildInputs = stdenv.lib.optional doCheck libpng;
+  buildInputs = [ libpng ];
 
   configureFlags = stdenv.lib.optional stdenv.isAarch32 "--disable-arm-iwmmxt";
 
diff --git a/pkgs/development/libraries/podofo/default.nix b/pkgs/development/libraries/podofo/default.nix
index 9a43470de3b7..51e2b5059749 100644
--- a/pkgs/development/libraries/podofo/default.nix
+++ b/pkgs/development/libraries/podofo/default.nix
@@ -19,6 +19,11 @@ stdenv.mkDerivation rec {
   # TODO(@Dridus) remove the ++ libc at next hash break
   buildInputs = [ lua5 ] ++ stdenv.lib.optional stdenv.isLinux stdenv.cc.libc;
 
+  preConfigure = ''
+    CC=${stdenv.cc.targetPrefix}cc
+    CXX=${stdenv.cc.targetPrefix}c++
+  '';
+
   cmakeFlags = "-DPODOFO_BUILD_SHARED=ON -DPODOFO_BUILD_STATIC=OFF";
 
   meta = {
diff --git a/pkgs/development/libraries/qca2/default.nix b/pkgs/development/libraries/qca2/default.nix
index 568e7ce07b3b..ec32c44a91fc 100644
--- a/pkgs/development/libraries/qca2/default.nix
+++ b/pkgs/development/libraries/qca2/default.nix
@@ -10,16 +10,23 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ cmake pkgconfig ];
-  buildInputs = [ (stdenv.lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security) qt ];
+  buildInputs = [ qt ]
+    ++ stdenv.lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.Security;
 
   enableParallelBuilding = true;
 
   # tells CMake to use this CA bundle file if it is accessible
-  preConfigure = ''export QC_CERTSTORE_PATH=/etc/ssl/certs/ca-certificates.crt'';
+  preConfigure = ''
+    export QC_CERTSTORE_PATH=/etc/ssl/certs/ca-certificates.crt
+  '';
 
   # tricks CMake into using this CA bundle file if it is not accessible (in a sandbox)
   cmakeFlags = [ "-Dqca_CERTSTORE=/etc/ssl/certs/ca-certificates.crt" ];
 
+  postPatch = ''
+    sed -i -e '1i cmake_policy(SET CMP0025 NEW)' CMakeLists.txt
+  '';
+
   meta = with stdenv.lib; {
     description = "Qt Cryptographic Architecture";
     license = "LGPL";
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
index 62da679157f0..833433fabeca 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
@@ -17,6 +17,9 @@ let
       url = "http://dev-www.libreoffice.org/src/5ade6ae2a99bc1e9e57031ca88d36dad-${name}.tar.gz";
       sha256 = "304636d4eccd81a14b6914d07b84c79ebb815288c76fe027b9ebff6ff24d5705";
     };
+    postPatch = ''
+      patchShebangs tests
+    '';
     buildInputs = [ perl ];
   };
 in
@@ -60,6 +63,8 @@ qtModule {
       ]
     ++ optional (!stdenv.isDarwin) ''-DNIXPKGS_LIBUDEV="${getLib systemd}/lib/libudev"'';
 
+  doCheck = false; # fails 13 out of 13 tests (ctest)
+
   # Hack to avoid TMPDIR in RPATHs.
   preFixup = ''rm -rf "$(pwd)" && mkdir "$(pwd)" '';
 
diff --git a/pkgs/development/libraries/science/biology/nifticlib/default.nix b/pkgs/development/libraries/science/biology/nifticlib/default.nix
index ae916b84ea33..19e5644b9930 100644
--- a/pkgs/development/libraries/science/biology/nifticlib/default.nix
+++ b/pkgs/development/libraries/science/biology/nifticlib/default.nix
@@ -14,6 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ zlib ];
 
   checkPhase = "ctest";
+  doCheck = false; # fails 7 out of 293 tests
 
   meta = with stdenv.lib; {
     homepage = https://sourceforge.net/projects/niftilib;
diff --git a/pkgs/development/libraries/silgraphite/graphite2.nix b/pkgs/development/libraries/silgraphite/graphite2.nix
index 30a99415981b..dc3f4a118f6d 100644
--- a/pkgs/development/libraries/silgraphite/graphite2.nix
+++ b/pkgs/development/libraries/silgraphite/graphite2.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, freetype, cmake }:
+{ stdenv, fetchurl, pkgconfig, freetype, cmake, python }:
 
 stdenv.mkDerivation rec {
   version = "1.3.6";
@@ -15,6 +15,9 @@ stdenv.mkDerivation rec {
 
   patches = stdenv.lib.optionals stdenv.isDarwin [ ./macosx.patch ];
 
+  checkInputs = [ python ];
+  doCheck = false; # fails, probably missing something
+
   meta = {
     description = "An advanced font engine";
     maintainers = [ stdenv.lib.maintainers.raskin ];
diff --git a/pkgs/development/libraries/sqlite/default.nix b/pkgs/development/libraries/sqlite/default.nix
index 41fd880769a3..166ea39493bf 100644
--- a/pkgs/development/libraries/sqlite/default.nix
+++ b/pkgs/development/libraries/sqlite/default.nix
@@ -71,6 +71,8 @@ stdenv.mkDerivation rec {
     sed -i $out/lib/libsqlite3.la -e "s/dependency_libs=.*/dependency_libs='''/"
   '';
 
+  doCheck = false; # fails to link against tcl
+
   meta = {
     description = "A self-contained, serverless, zero-configuration, transactional SQL database engine";
     downloadPage = http://sqlite.org/download.html;
diff --git a/pkgs/development/libraries/twolame/default.nix b/pkgs/development/libraries/twolame/default.nix
index a65254fea24e..a752da8cb57d 100644
--- a/pkgs/development/libraries/twolame/default.nix
+++ b/pkgs/development/libraries/twolame/default.nix
@@ -17,6 +17,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkgconfig ];
   buildInputs = [ libsndfile ];
 
+  doCheck = false; # fails with "../build-scripts/test-driver: line 107: -Mstrict: command not found"
+
   meta = with stdenv.lib;{
     description = "A MP2 encoder";
     longDescription = ''
diff --git a/pkgs/development/libraries/uthash/default.nix b/pkgs/development/libraries/uthash/default.nix
index 9c252004656c..57a1cbf73c2c 100644
--- a/pkgs/development/libraries/uthash/default.nix
+++ b/pkgs/development/libraries/uthash/default.nix
@@ -13,9 +13,8 @@ stdenv.mkDerivation rec {
 
   dontBuild = false;
 
-  buildInputs = stdenv.lib.optional doCheck perl;
-
   doCheck = true;
+  checkInputs = [ perl ];
   checkTarget = "-C tests/";
 
   installPhase = ''
@@ -30,4 +29,3 @@ stdenv.mkDerivation rec {
     platforms   = platforms.all;
   };
 }
-
diff --git a/pkgs/development/libraries/v8/default.nix b/pkgs/development/libraries/v8/default.nix
index 099794f6623d..2b9fa5cc04c0 100644
--- a/pkgs/development/libraries/v8/default.nix
+++ b/pkgs/development/libraries/v8/default.nix
@@ -1,5 +1,5 @@
 { stdenv, lib, fetchgit, fetchFromGitHub, gyp, readline, python, which, icu
-, patchelf, coreutils, cctools
+, patchelf, coreutils, xcbuild
 , doCheck ? false
 , static ? false
 }:
@@ -124,13 +124,7 @@ stdenv.mkDerivation rec {
 
   # Patch based off of:
   # https://github.com/cowboyd/libv8/tree/v5.1.281.67.0/patches
-  patches = lib.optional (!doCheck) ./libv8-5.4.232.patch
-  ++ stdenv.lib.optionals stdenv.isDarwin [ ./no-xcode.patch ];
-
-  prePatch = ''
-    chmod +w tools/gyp/pylib/gyp
-    chmod +w tools/gyp/pylib/gyp/xcode_emulation.py
-  '';
+  patches = lib.optional (!doCheck) ./libv8-5.4.232.patch;
 
   postPatch = ''
     sed -i 's,#!/usr/bin/env python,#!${python}/bin/python,' gypfiles/gyp_v8
@@ -157,7 +151,7 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ which ];
   buildInputs = [ readline python icu ]
-    ++ stdenv.lib.optional stdenv.isDarwin cctools
+    ++ stdenv.lib.optional stdenv.isDarwin xcbuild
     ++ stdenv.lib.optional stdenv.isLinux patchelf;
 
   NIX_CFLAGS_COMPILE = "-Wno-error=strict-overflow -Wno-error=unused-function -Wno-error=attributes"
diff --git a/pkgs/development/libraries/v8/no-xcode.patch b/pkgs/development/libraries/v8/no-xcode.patch
deleted file mode 100644
index 5562ffaf64e1..000000000000
--- a/pkgs/development/libraries/v8/no-xcode.patch
+++ /dev/null
@@ -1,64 +0,0 @@
---- a/tools/gyp/pylib/gyp/xcode_emulation.py
-+++ a/tools/gyp/pylib/gyp/xcode_emulation.py
-@@ -473,10 +473,16 @@
- 
-   def _XcodeSdkPath(self, sdk_root):
-     if sdk_root not in XcodeSettings._sdk_path_cache:
--      sdk_path = self._GetSdkVersionInfoItem(sdk_root, '--show-sdk-path')
--      XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
--      if sdk_root:
--        XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      try:
-+        sdk_path = self._GetSdkVersionInfoItem(sdk_root, '--show-sdk-path')
-+        XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
-+        if sdk_root:
-+          XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      except:
-+        # if this fails it's because xcodebuild failed, which means
-+        # the user is probably on a CLT-only system, where there
-+        # is no valid SDK root
-+        XcodeSettings._sdk_path_cache[sdk_root] = None
-     return XcodeSettings._sdk_path_cache[sdk_root]
- 
-   def _AppendPlatformVersionMinFlags(self, lst):
-@@ -606,10 +612,11 @@
-       framework_root = sdk_root
-     else:
-       framework_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
- 
-     self.configname = None
-     return cflags
-@@ -861,10 +868,11 @@
-     sdk_root = self._SdkPath()
-     if not sdk_root:
-       sdk_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
- 
-     platform_root = self._XcodePlatformPath(configname)
-     if sdk_root and platform_root and self._IsXCTest():
-@@ -1358,7 +1366,7 @@
-     if version:
-       version = re.match(r'(\d\.\d\.?\d*)', version).groups()[0]
-     else:
--      raise GypError("No Xcode or CLT version detected!")
-+      version = "7.0.0"
-     # The CLT has no build information, so we return an empty string.
-     version_list = [version, '']
-   version = version_list[0]
diff --git a/pkgs/development/libraries/vigra/default.nix b/pkgs/development/libraries/vigra/default.nix
index 14211ea65e9a..4a002becdb3b 100644
--- a/pkgs/development/libraries/vigra/default.nix
+++ b/pkgs/development/libraries/vigra/default.nix
@@ -26,6 +26,9 @@ in stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
+  # fails with "./test_watersheds3d: error while loading shared libraries: libvigraimpex.so.11: cannot open shared object file: No such file or directory"
+  doCheck = false;
+
   meta = with stdenv.lib; {
     description = "Novel computer vision C++ library with customizable algorithms and data structures";
     homepage = https://hci.iwr.uni-heidelberg.de/vigra;
diff --git a/pkgs/development/libraries/volume-key/default.nix b/pkgs/development/libraries/volume-key/default.nix
index a8515975c353..b91c091c6c6f 100644
--- a/pkgs/development/libraries/volume-key/default.nix
+++ b/pkgs/development/libraries/volume-key/default.nix
@@ -24,6 +24,8 @@ in stdenv.mkDerivation rec {
     "pythondir=$(py)/${python3.sitePackages}"
   ];
 
+  doCheck = false; # fails 1 out of 1 tests, needs `certutil`
+
   meta = with stdenv.lib; {
     description = "A library for manipulating storage volume encryption keys and storing them separately from volumes to handle forgotten passphrases, and the associated command-line tool";
     homepage = https://pagure.io/volume_key/;
diff --git a/pkgs/development/libraries/zeroc-ice/default.nix b/pkgs/development/libraries/zeroc-ice/default.nix
index 063d64c69058..4369a9765e58 100644
--- a/pkgs/development/libraries/zeroc-ice/default.nix
+++ b/pkgs/development/libraries/zeroc-ice/default.nix
@@ -27,6 +27,11 @@ stdenv.mkDerivation rec {
         --replace xcrun ""
   '';
 
+  preConfigure = ''
+    CC=${stdenv.cc.targetPrefix}cc
+    CXX=${stdenv.cc.targetPrefix}c++
+  '';
+
   makeFlags = [ "prefix=$(out)" "OPTIMIZE=yes" ];
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/ocaml-modules/zarith/default.nix b/pkgs/development/ocaml-modules/zarith/default.nix
index e5d954970589..7b76919241de 100644
--- a/pkgs/development/ocaml-modules/zarith/default.nix
+++ b/pkgs/development/ocaml-modules/zarith/default.nix
@@ -28,7 +28,10 @@ stdenv.mkDerivation rec {
   propagatedBuildInputs = [ gmp ];
 
   patchPhase = "patchShebangs ./z_pp.pl";
+
   configurePhase = ''
+    CC=${stdenv.cc.targetPrefix}cc
+    CXX=${stdenv.cc.targetPrefix}c++
     ./configure -installdir $out/lib/ocaml/${ocaml.version}/site-lib
   '';
   preInstall = "mkdir -p $out/lib/ocaml/${ocaml.version}/site-lib";
diff --git a/pkgs/development/python-modules/Cython/default.nix b/pkgs/development/python-modules/Cython/default.nix
index fa07eee0d7e1..de5eaea842b2 100644
--- a/pkgs/development/python-modules/Cython/default.nix
+++ b/pkgs/development/python-modules/Cython/default.nix
@@ -48,6 +48,8 @@ in buildPythonPackage rec {
         ''--exclude="(${builtins.concatStringsSep "|" excludedTests})"''}
   '';
 
+  doCheck = !stdenv.isDarwin;
+
   patches = [
     # The following is in GitHub in 0.28.3 but not in the `sdist`.
     # https://github.com/cython/cython/issues/2319
diff --git a/pkgs/development/python-modules/arxiv2bib/default.nix b/pkgs/development/python-modules/arxiv2bib/default.nix
index 1182c36fc0ca..99725bcfa61d 100644
--- a/pkgs/development/python-modules/arxiv2bib/default.nix
+++ b/pkgs/development/python-modules/arxiv2bib/default.nix
@@ -14,7 +14,6 @@ buildPythonPackage rec {
     sha256 = "1kp2iyx20lpc9dv4qg5fgwf83a1wx6f7hj1ldqyncg0kn9xcrhbg";
   };
 
-  # Required for tests only
   checkInputs = [ mock ];
 
   checkPhase = "${python.interpreter} -m unittest discover -s tests";
diff --git a/pkgs/development/python-modules/dbus/default.nix b/pkgs/development/python-modules/dbus/default.nix
index 8f3f331fd509..13465f1af2c8 100644
--- a/pkgs/development/python-modules/dbus/default.nix
+++ b/pkgs/development/python-modules/dbus/default.nix
@@ -15,12 +15,12 @@ if isPyPy then throw "dbus-python not supported for interpreter ${python.executa
 
   nativeBuildInputs = [ pkgconfig ];
   buildInputs = [ dbus dbus-glib ]
-    ++ lib.optionals doCheck [ dbus.out pygobject3 ]
     # My guess why it's sometimes trying to -lncurses.
     # It seems not to retain the dependency anyway.
     ++ lib.optional (! python ? modules) ncurses;
 
   doCheck = true;
+  checkInputs = [ dbus.out pygobject3 ];
 
   meta = {
     description = "Python DBus bindings";
diff --git a/pkgs/development/python-modules/gensim/default.nix b/pkgs/development/python-modules/gensim/default.nix
index f9f8198e4ac1..9a1a870dd00a 100644
--- a/pkgs/development/python-modules/gensim/default.nix
+++ b/pkgs/development/python-modules/gensim/default.nix
@@ -5,6 +5,7 @@
 , six
 , scipy
 , smart_open
+, scikitlearn, testfixtures, unittest2
 }:
 
 buildPythonPackage rec {
@@ -15,20 +16,20 @@ buildPythonPackage rec {
     sha256 = "78ed9b6ac35f104542f3bee0386d71ddf9432d74c153065d2ea9f6baf10e5b49";
   };
 
-  propagatedBuildInputs = [ smart_open numpy six scipy
-                            # scikitlearn testfixtures unittest2 # for tests
-                          ];
-  doCheck = false;
+  propagatedBuildInputs = [ smart_open numpy six scipy ];
 
-  # Two tests fail.
+  checkInputs = [ scikitlearn testfixtures unittest2 ];
 
+  # Two tests fail.
+  #
   # ERROR: testAddMorphemesToEmbeddings (gensim.test.test_varembed_wrapper.TestVarembed)
   # ImportError: Could not import morfessor.
   # This package is not in nix
-
+  #
   # ERROR: testWmdistance (gensim.test.test_fasttext_wrapper.TestFastText)
   # ImportError: Please install pyemd Python package to compute WMD.
   # This package is not in nix
+  doCheck = false;
 
   meta = {
     description = "Topic-modelling library";
diff --git a/pkgs/development/python-modules/ldap/default.nix b/pkgs/development/python-modules/ldap/default.nix
index 17a6b158d3f2..09d399d25b37 100644
--- a/pkgs/development/python-modules/ldap/default.nix
+++ b/pkgs/development/python-modules/ldap/default.nix
@@ -1,6 +1,6 @@
 { buildPythonPackage, fetchPypi
 , pyasn1, pyasn1-modules, pytest
-, openldap, cyrus_sasl }:
+, openldap, cyrus_sasl, stdenv }:
 
 buildPythonPackage rec {
   pname = "python-ldap";
@@ -26,4 +26,6 @@ buildPythonPackage rec {
 
     py.test
   '';
+
+  doCheck = !stdenv.isDarwin;
 }
diff --git a/pkgs/development/python-modules/markdown/default.nix b/pkgs/development/python-modules/markdown/default.nix
index 515dee0e7662..f2397138771e 100644
--- a/pkgs/development/python-modules/markdown/default.nix
+++ b/pkgs/development/python-modules/markdown/default.nix
@@ -25,4 +25,4 @@ buildPythonPackage rec {
     homepage = https://github.com/Python-Markdown/markdown;
     license = lib.licenses.bsd3;
   };
-}
\ No newline at end of file
+}
diff --git a/pkgs/development/python-modules/tqdm/default.nix b/pkgs/development/python-modules/tqdm/default.nix
index 0b77f7068012..fd5cd47be383 100644
--- a/pkgs/development/python-modules/tqdm/default.nix
+++ b/pkgs/development/python-modules/tqdm/default.nix
@@ -5,6 +5,7 @@
 , coverage
 , glibcLocales
 , flake8
+, stdenv
 }:
 
 buildPythonPackage rec {
@@ -26,6 +27,8 @@ buildPythonPackage rec {
 
   LC_ALL="en_US.UTF-8";
 
+  doCheck = !stdenv.isDarwin;
+
   meta = {
     description = "A Fast, Extensible Progress Meter";
     homepage = https://github.com/tqdm/tqdm;
diff --git a/pkgs/development/tools/misc/automake/automake-1.11.x.nix b/pkgs/development/tools/misc/automake/automake-1.11.x.nix
index 0a3316005236..8f437af0ada8 100644
--- a/pkgs/development/tools/misc/automake/automake-1.11.x.nix
+++ b/pkgs/development/tools/misc/automake/automake-1.11.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl, autoconf, makeWrapper }:
+{ stdenv, fetchurl, perl, autoconf }:
 
 stdenv.mkDerivation rec {
   name = "automake-1.11.6";
@@ -17,11 +17,12 @@ stdenv.mkDerivation rec {
 
   patches = [ ./fix-test-autoconf-2.69.patch ./fix-perl-5.26.patch ];
 
-  buildInputs = [perl autoconf makeWrapper];
+  buildInputs = [ perl autoconf ];
 
   # Disable indented log output from Make, otherwise "make.test" will
   # fail.
   preCheck = "unset NIX_INDENT_MAKE";
+  doCheck = false; # takes _a lot_ of time, fails 11 of 782 tests
 
   # Don't fixup "#! /bin/sh" in Libtool, otherwise it will use the
   # "fixed" path in generated files!
diff --git a/pkgs/development/tools/misc/automake/automake-1.16.x.nix b/pkgs/development/tools/misc/automake/automake-1.16.x.nix
index 6646b8472526..478fc14d680d 100644
--- a/pkgs/development/tools/misc/automake/automake-1.16.x.nix
+++ b/pkgs/development/tools/misc/automake/automake-1.16.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, perl, autoconf, doCheck ? false }:
+{ stdenv, fetchurl, perl, autoconf }:
 
 stdenv.mkDerivation rec {
   name = "automake-1.16.1";
@@ -16,7 +16,8 @@ stdenv.mkDerivation rec {
   # Disable indented log output from Make, otherwise "make.test" will
   # fail.
   preCheck = "unset NIX_INDENT_MAKE";
-  inherit doCheck;
+  doCheck = false; # takes _a lot_ of time, fails 3 out of 2698 tests, all seem to be related to paths
+  doInstallCheck = false; # runs the same thing, fails the same tests
 
   # The test suite can run in parallel.
   enableParallelBuilding = true;
diff --git a/pkgs/development/tools/misc/binutils/default.nix b/pkgs/development/tools/misc/binutils/default.nix
index 890ff7b64a91..3ca9e539ddd8 100644
--- a/pkgs/development/tools/misc/binutils/default.nix
+++ b/pkgs/development/tools/misc/binutils/default.nix
@@ -1,6 +1,6 @@
 { stdenv, buildPackages
 , fetchurl, zlib, autoreconfHook264
-, hostPlatform, targetPlatform
+, hostPlatform, buildPlatform, targetPlatform
 , noSysDirs, gold ? true, bison ? null
 }:
 
@@ -121,6 +121,9 @@ stdenv.mkDerivation rec {
 
   doCheck = false; # fails
 
+  # else fails with "./sanity.sh: line 36: $out/bin/size: not found"
+  doInstallCheck = buildPlatform == hostPlatform && hostPlatform == targetPlatform;
+
   enableParallelBuilding = true;
 
   passthru = {
diff --git a/pkgs/development/tools/misc/elfutils/default.nix b/pkgs/development/tools/misc/elfutils/default.nix
index e067c0a669be..85adf73ed2ac 100644
--- a/pkgs/development/tools/misc/elfutils/default.nix
+++ b/pkgs/development/tools/misc/elfutils/default.nix
@@ -10,7 +10,11 @@ stdenv.mkDerivation rec {
     sha256 = "1zq0l12k64hrbjmdjc4llrad96c25i427hpma1id9nk87w9qqvdp";
   };
 
-  patches = ./debug-info-from-env.patch;
+  patches = [ ./debug-info-from-env.patch ];
+
+  postPatch = ''
+    patchShebangs tests
+  '';
 
   hardeningDisable = [ "format" ];
 
@@ -63,6 +67,9 @@ stdenv.mkDerivation rec {
     cp version.h $out/include
   '';
 
+  doCheck = false; # fails 3 out of 174 tests
+  doInstallCheck = false; # fails 70 out of 174 tests
+
   meta = {
     homepage = https://sourceware.org/elfutils/;
     description = "A set of utilities to handle ELF objects";
diff --git a/pkgs/development/tools/misc/intel-gpu-tools/default.nix b/pkgs/development/tools/misc/intel-gpu-tools/default.nix
index ba561522e1f5..a1b358807c4e 100644
--- a/pkgs/development/tools/misc/intel-gpu-tools/default.nix
+++ b/pkgs/development/tools/misc/intel-gpu-tools/default.nix
@@ -21,6 +21,8 @@ stdenv.mkDerivation rec {
   '';
 
   preBuild = ''
+    patchShebangs tests
+
     patchShebangs debugger/system_routine/pre_cpp.py
     substituteInPlace tools/Makefile.am --replace '$(CAIRO_CFLAGS)' '$(CAIRO_CFLAGS) $(GLIB_CFLAGS)'
     substituteInPlace tests/Makefile.am --replace '$(CAIRO_CFLAGS)' '$(CAIRO_CFLAGS) $(GLIB_CFLAGS)'
diff --git a/pkgs/development/tools/misc/patchelf/default.nix b/pkgs/development/tools/misc/patchelf/default.nix
index 39ec46ffbfdd..df24f6003d7f 100644
--- a/pkgs/development/tools/misc/patchelf/default.nix
+++ b/pkgs/development/tools/misc/patchelf/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
 
   setupHook = [ ./setup-hook.sh ];
 
-  #doCheck = true; # problems when loading libc.so.6
+  doCheck = false; # fails 8 out of 24 tests, problems when loading libc.so.6
 
   meta = {
     homepage = https://nixos.org/patchelf.html;
diff --git a/pkgs/development/tools/misc/rman/default.nix b/pkgs/development/tools/misc/rman/default.nix
index 702dabcf3955..8093846780d2 100644
--- a/pkgs/development/tools/misc/rman/default.nix
+++ b/pkgs/development/tools/misc/rman/default.nix
@@ -8,7 +8,12 @@ stdenv.mkDerivation {
     sha256 = "0prdld6nbkdlkcgc2r1zp13h2fh8r0mlwxx423dnc695ddlk18b8";
   };
 
-  makeFlags = "BINDIR=$(out)/bin MANDIR=$(out)/share/man";
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace ginstall install
+  '';
+
+  makeFlags = [ "BINDIR=$(out)/bin" "MANDIR=$(out)/share/man" ];
 
   preInstall = ''
     mkdir -p $out/bin
@@ -17,6 +22,8 @@ stdenv.mkDerivation {
 
   hardeningDisable = [ "format" ];
 
+  doCheck = false; # "check" target is probably meant to do "installcheck" or something
+
   meta = {
     description = "Parse formatted man pages and man page source from most flavors of UNIX and converts them to HTML, ASCII, TkMan, DocBook, and other formats";
     license = "artistic";
diff --git a/pkgs/development/tools/misc/strace/default.nix b/pkgs/development/tools/misc/strace/default.nix
index cc68cc0394f2..1e449d722c35 100644
--- a/pkgs/development/tools/misc/strace/default.nix
+++ b/pkgs/development/tools/misc/strace/default.nix
@@ -16,6 +16,10 @@ stdenv.mkDerivation rec {
 
   configureFlags = stdenv.lib.optional (stdenv.hostPlatform.isAarch64 || stdenv.hostPlatform.isRiscV) "--enable-mpers=check";
 
+  # fails 1 out of 523 tests with
+  # "strace-k.test: failed test: ../../strace -e getpid -k ../stack-fcall output mismatch"
+  doCheck = false;
+
   meta = with stdenv.lib; {
     homepage = https://strace.io/;
     description = "A system call tracer for Linux";
diff --git a/pkgs/development/tools/misc/texinfo/common.nix b/pkgs/development/tools/misc/texinfo/common.nix
index 12534297ff3d..101298cd3052 100644
--- a/pkgs/development/tools/misc/texinfo/common.nix
+++ b/pkgs/development/tools/misc/texinfo/common.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ xz.bin ]
     ++ optionals stdenv.isSunOS [ libiconv gawk ]
-    ++ optionals interactive [ ncurses procps ];
+    ++ optional interactive ncurses;
 
   configureFlags = [ "PERL=${buildPackages.perl}/bin/perl" ]
     ++ stdenv.lib.optional stdenv.isSunOS "AWK=${gawk}/bin/awk";
@@ -33,6 +33,8 @@ stdenv.mkDerivation rec {
     installTargets="install install-tex";
   '';
 
+  checkInputs = [ procps ];
+
   doCheck = interactive
     && !stdenv.isDarwin
     && !stdenv.isSunOS; # flaky
diff --git a/pkgs/development/tools/parsing/bison/2.x.nix b/pkgs/development/tools/parsing/bison/2.x.nix
index 071ad9332914..019c154a6b76 100644
--- a/pkgs/development/tools/parsing/bison/2.x.nix
+++ b/pkgs/development/tools/parsing/bison/2.x.nix
@@ -8,8 +8,9 @@ stdenv.mkDerivation rec {
     sha256 = "0c9li3iaslzzr3zig6m3zlmb4r8i0wfvkcrvdyiqxasb09mjkqh8";
   };
 
-  nativeBuildInputs = [ m4 ] ++ stdenv.lib.optional doCheck perl;
+  nativeBuildInputs = [ m4 ];
   propagatedBuildInputs = [ m4 ];
+  checkInputs = [ perl ];
 
   patches = lib.optional stdenv.isDarwin ./darwin-vasnprintf.patch;
 
diff --git a/pkgs/development/tools/parsing/flex/2.5.35.nix b/pkgs/development/tools/parsing/flex/2.5.35.nix
index 3e40ddee9d9a..7e09b0a8cd38 100644
--- a/pkgs/development/tools/parsing/flex/2.5.35.nix
+++ b/pkgs/development/tools/parsing/flex/2.5.35.nix
@@ -8,6 +8,10 @@ stdenv.mkDerivation rec {
     sha256 = "0wh06nix8bd4w1aq4k2fbbkdq5i30a9lxz3xczf3ff28yy0kfwzm";
   };
 
+  postPatch = ''
+    patchShebangs tests
+  '';
+
   nativeBuildInputs = [ flex bison texinfo help2man autoreconfHook ];
 
   propagatedBuildInputs = [ m4 ];
@@ -17,6 +21,8 @@ stdenv.mkDerivation rec {
     "ac_cv_func_realloc_0_nonnull=yes"
   ];
 
+  doCheck = false; # fails 2 out of 46 tests
+
   meta = with stdenv.lib; {
     branch = "2.5.35";
     homepage = http://flex.sourceforge.net/;
diff --git a/pkgs/development/tools/parsing/flex/2.6.1.nix b/pkgs/development/tools/parsing/flex/2.6.1.nix
index 81685b6ee661..3a46c6c8f01e 100644
--- a/pkgs/development/tools/parsing/flex/2.6.1.nix
+++ b/pkgs/development/tools/parsing/flex/2.6.1.nix
@@ -8,6 +8,12 @@ stdenv.mkDerivation rec {
     sha256 = "0fy14c35yz2m1n1m4f02by3501fn0cca37zn7jp8lpp4b3kgjhrw";
   };
 
+  postPatch = ''
+    patchShebangs tests
+  '' + stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+    substituteInPlace Makefile.in --replace "tests" " ";
+  '';
+
   buildInputs = [ bison ];
 
   propagatedBuildInputs = [ m4 ];
@@ -21,11 +27,6 @@ stdenv.mkDerivation rec {
     sed -i Makefile -e 's/-no-undefined//;'
   '';
 
-  # disable tests which can't run on build machine
-  postPatch = stdenv.lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
-    substituteInPlace Makefile.in --replace "tests" " ";
-  '';
-
   meta = with stdenv.lib; {
     homepage = https://github.com/westes/flex;
     description = "A fast lexical analyser generator";
diff --git a/pkgs/development/tools/parsing/flex/default.nix b/pkgs/development/tools/parsing/flex/default.nix
index 421102a80c9f..d7d27ac9a1cd 100644
--- a/pkgs/development/tools/parsing/flex/default.nix
+++ b/pkgs/development/tools/parsing/flex/default.nix
@@ -19,7 +19,10 @@ stdenv.mkDerivation rec {
         + "/tools/flex/patches/200-build-AC_USE_SYSTEM_EXTENSIONS-in-configure.ac.patch";
     sha256 = "1aarhcmz7mfrgh15pkj6f7ikxa2m0mllw1i1vscsf1kw5d05lw6f";
   })];
-  postPatch = stdenv.lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
+
+  postPatch = ''
+    patchShebangs tests
+  '' + stdenv.lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
     substituteInPlace Makefile.in --replace "tests" " "
 
     substituteInPlace doc/Makefile.am --replace 'flex.1: $(top_srcdir)/configure.ac' 'flex.1: '
diff --git a/pkgs/development/tools/parsing/re2c/default.nix b/pkgs/development/tools/parsing/re2c/default.nix
index da1bcced32ec..1d0545f6889e 100644
--- a/pkgs/development/tools/parsing/re2c/default.nix
+++ b/pkgs/development/tools/parsing/re2c/default.nix
@@ -15,6 +15,10 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
+  preCheck = ''
+    patchShebangs run_tests.sh
+  '';
+
   meta = with stdenv.lib; {
     description = "Tool for writing very fast and very flexible scanners";
     homepage    = "http://re2c.org";
diff --git a/pkgs/development/tools/xcbuild/platforms.nix b/pkgs/development/tools/xcbuild/platforms.nix
index bc60af9e1a5c..e20dc878b535 100644
--- a/pkgs/development/tools/xcbuild/platforms.nix
+++ b/pkgs/development/tools/xcbuild/platforms.nix
@@ -294,8 +294,7 @@ runCommand "Platforms" {} ''
   install -D ${writeText "PackageTypes.xcspec" (toPlist {} PackageTypes)} $platform/Developer/Library/Xcode/Specifications/PackageTypes.xcspec
   install -D ${writeText "ProductTypes.xcspec" (toPlist {} ProductTypes)} $platform/Developer/Library/Xcode/Specifications/ProductTypes.xcspec
 
-  # per-platform bins go here
-  mkdir -p $platform/usr/bin
+  ln -s $platform $platform/usr
 
   mkdir -p $platform/Developer
   ln -s ${sdks} $platform/Developer/SDKs
diff --git a/pkgs/development/tools/xcbuild/sdks.nix b/pkgs/development/tools/xcbuild/sdks.nix
index b0af26e87c12..74192d9c6744 100644
--- a/pkgs/development/tools/xcbuild/sdks.nix
+++ b/pkgs/development/tools/xcbuild/sdks.nix
@@ -1,4 +1,5 @@
-{ runCommand, lib, toolchainName, sdkName, writeText, version, xcodePlatform }:
+{ stdenv, runCommand, lib, toolchainName, sdkName
+, writeText, version, xcodePlatform, libcxx, symlinkJoin }:
 
 let
   inherit (lib.generators) toPlist;
@@ -18,11 +19,11 @@ let
   };
 in
 
-runCommand "SDKs" {
-  inherit version;
-} ''
+runCommand "SDKs" {} ''
   sdk=$out/${sdkName}.sdk
   install -D ${writeText "SDKSettings.plist" (toPlist {} SDKSettings)} $sdk/SDKSettings.plist
   install -D ${writeText "SystemVersion.plist" (toPlist {} SystemVersion)} $sdk/System/Library/CoreServices/SystemVersion.plist
+  ln -s $sdk $sdk/usr
+
   ln -s $sdk $out/${xcodePlatform}.sdk
 ''
diff --git a/pkgs/development/tools/xcbuild/toolchains.nix b/pkgs/development/tools/xcbuild/toolchains.nix
index 01a8fbdb0b06..59e009a43386 100644
--- a/pkgs/development/tools/xcbuild/toolchains.nix
+++ b/pkgs/development/tools/xcbuild/toolchains.nix
@@ -1,4 +1,4 @@
-{ runCommand, toolchainName, fetchurl, makeWrapper, stdenv
+{ runCommand, toolchainName, fetchurl, stdenv
 , buildPackages, lib, writeText }:
 
 let
@@ -20,52 +20,52 @@ let
   };
 in
 
-runCommand "Toolchains" {
-  nativeBuildInputs = [ makeWrapper ];
-} (''
+runCommand "Toolchains" {} (''
   toolchain=$out/XcodeDefault.xctoolchain
   mkdir -p $toolchain
 
   install -D ${writeText "ToolchainInfo.plist" (toPlist {} ToolchainInfo)} $toolchain/ToolchainInfo.plist
 
-  mkdir -p $toolchain/usr/include
-  mkdir -p $toolchain/usr/lib
-  mkdir -p $toolchain/usr/libexec
-  mkdir -p $toolchain/usr/share
-  mkdir -p $toolchain/usr/bin
+  ln -s $toolchain $toolchain/usr
+
+  mkdir -p $toolchain/include
+  mkdir -p $toolchain/lib
+  mkdir -p $toolchain/libexec
+  mkdir -p $toolchain/share
+  mkdir -p $toolchain/bin
 
   for bin in ${getBin stdenv.cc}/bin/*; do
-    ln -s $bin $toolchain/usr/bin
+    ln -s $bin $toolchain/bin
   done
 
   for bin in ${getBin stdenv.cc.bintools.bintools}/bin/*; do
-    if ! [ -e "$toolchain/usr/bin/$(basename $bin)" ]; then
-      ln -s $bin $toolchain/usr/bin
+    if ! [ -e "$toolchain/bin/$(basename $bin)" ]; then
+      ln -s $bin $toolchain/bin
     fi
   done
 
-  ln -s ${buildPackages.yacc}/bin/yacc $toolchain/usr/bin/yacc
-  ln -s ${buildPackages.yacc}/bin/bison $toolchain/usr/bin/bison
-  ln -s ${buildPackages.flex}/bin/flex $toolchain/usr/bin/flex
-  ln -s ${buildPackages.flex}/bin/flex++ $toolchain/usr/bin/flex++
-  ln -s $toolchain/bin/flex $toolchain/usr/bin/lex
+  ln -s ${buildPackages.yacc}/bin/yacc $toolchain/bin/yacc
+  ln -s ${buildPackages.yacc}/bin/bison $toolchain/bin/bison
+  ln -s ${buildPackages.flex}/bin/flex $toolchain/bin/flex
+  ln -s ${buildPackages.flex}/bin/flex++ $toolchain/bin/flex++
+  ln -s $toolchain/bin/flex $toolchain/bin/lex
 
-  ln -s ${buildPackages.m4}/bin/m4 $toolchain/usr/bin/m4
-  ln -s $toolchain/usr/bin/m4 $toolchain/usr/bin/gm4
+  ln -s ${buildPackages.m4}/bin/m4 $toolchain/bin/m4
+  ln -s $toolchain/bin/m4 $toolchain/bin/gm4
 
-  ln -s ${buildPackages.unifdef}/bin/unifdef $toolchain/usr/bin/unifdef
-  ln -s ${buildPackages.unifdef}/bin/unifdefall $toolchain/usr/bin/unifdefall
+  ln -s ${buildPackages.unifdef}/bin/unifdef $toolchain/bin/unifdef
+  ln -s ${buildPackages.unifdef}/bin/unifdefall $toolchain/bin/unifdefall
 
-  ln -s ${buildPackages.gperf}/bin/gperf $toolchain/usr/bin/gperf
-  ln -s ${buildPackages.indent}/bin/indent $toolchain/usr/bin/indent
-  ln -s ${buildPackages.ctags}/bin/ctags $toolchain/usr/bin/ctags
+  ln -s ${buildPackages.gperf}/bin/gperf $toolchain/bin/gperf
+  ln -s ${buildPackages.indent}/bin/indent $toolchain/bin/indent
+  ln -s ${buildPackages.ctags}/bin/ctags $toolchain/bin/ctags
 '' + optionalString stdenv.isDarwin ''
   for bin in ${getBin buildPackages.darwin.cctools}/bin/*; do
-    if ! [ -e "$toolchain/usr/bin/$(basename $bin)" ]; then
-      ln -s $bin $toolchain/usr/bin
+    if ! [ -e "$toolchain/bin/$(basename $bin)" ]; then
+      ln -s $bin $toolchain/bin
     fi
   done
 
-  ln -s ${buildPackages.darwin.bootstrap_cmds}/bin/mig $toolchain/usr/bin
-  ln -s ${mkdep-darwin-src} $toolchain/usr/bin/mkdep
+  ln -s ${buildPackages.darwin.bootstrap_cmds}/bin/mig $toolchain/bin
+  ln -s ${mkdep-darwin-src} $toolchain/bin/mkdep
 '')
diff --git a/pkgs/development/tools/xcbuild/wrapper.nix b/pkgs/development/tools/xcbuild/wrapper.nix
index 77ef8565a34e..4aa08f994576 100644
--- a/pkgs/development/tools/xcbuild/wrapper.nix
+++ b/pkgs/development/tools/xcbuild/wrapper.nix
@@ -1,4 +1,4 @@
-{ lib, buildPackages, makeWrapper, writeText, runCommand
+{ stdenv, lib, buildPackages, makeWrapper, writeText, runCommand
 , CoreServices, ImageIO, CoreGraphics
 , targetPlatform
 , xcodePlatform ? targetPlatform.xcodePlatform or "MacOSX"
@@ -36,14 +36,14 @@ let
   '';
 
   xcode-select = writeText "xcode-select" ''
-#!/usr/bin/env sh
+#!${stdenv.shell}
 while [ $# -gt 0 ]; do
    case "$1" in
          -h | --help) ;; # noop
          -s | --switch) shift;; # noop
          -r | --reset) ;; # noop
          -v | --version) echo xcode-select version ${xcodeSelectVersion} ;;
-         -p | --print-path) echo @DEVELOPER_DIR@ ;;
+         -p | -print-path | --print-path) echo @DEVELOPER_DIR@ ;;
          --install) ;; # noop
     esac
     shift
@@ -51,7 +51,7 @@ done
   '';
 
   xcrun = writeText "xcrun" ''
-#!/usr/bin/env sh
+#!${stdenv.shell}
 while [ $# -gt 0 ]; do
    case "$1" in
          --sdk | -sdk) shift ;;
@@ -86,16 +86,20 @@ runCommand "xcodebuild-${xcbuild.version}" {
   inherit (xcbuild) meta;
 
   # ensure that the toolchain goes in PATH
-  propagatedBuildInputs = [ "${toolchains}/XcodeDefault.xctoolchain/usr" ];
+  propagatedBuildInputs = [ "${toolchains}/XcodeDefault.xctoolchain" ];
 
-  passthru = { inherit xcbuild; };
+  passthru = {
+    inherit xcbuild;
+    toolchain = "${toolchains}/XcodeDefault.xctoolchain";
+    sdk = "${sdks}/${sdkName}";
+    platform = "${platforms}/${xcodePlatform}.platform";
+  };
 
   preferLocalBuild = true;
 } ''
   mkdir -p $out/bin
 
-  mkdir -p $out/usr
-  ln -s $out/bin $out/usr/bin
+  ln -s $out $out/usr
 
   mkdir -p $out/Library/Xcode
   ln -s ${xcbuild}/Library/Xcode/Specifications $out/Library/Xcode/Specifications
@@ -108,7 +112,8 @@ runCommand "xcodebuild-${xcbuild.version}" {
     --add-flags "DERIVED_DATA_DIR=." \
     --set DEVELOPER_DIR "$out" \
     --set SDKROOT ${sdkName} \
-    --run '[ "$1" = "-version" ] && (echo Xcode ${xcodeVer}; echo Build version ${sdkBuildVersion}) && exit 0'
+    --run '[ "$1" = "-version" ] && [ "$#" -eq 1 ] && (echo Xcode ${xcodeVer}; echo Build version ${sdkBuildVersion}) && exit 0' \
+    --run '[ "$1" = "-license" ] && exit 0'
 
   substitute ${xcode-select} $out/bin/xcode-select \
     --subst-var-by DEVELOPER_DIR $out
diff --git a/pkgs/development/web/nodejs/no-xcode-v7.patch b/pkgs/development/web/nodejs/no-xcode-v7.patch
deleted file mode 100644
index 05623b21f13f..000000000000
--- a/pkgs/development/web/nodejs/no-xcode-v7.patch
+++ /dev/null
@@ -1,79 +0,0 @@
-diff --git a/tools/gyp/pylib/gyp/xcode_emulation.py b/tools/gyp/pylib/gyp/xcode_emulation.py
-index a173ff0..1fc821a 100644
---- a/tools/gyp/pylib/gyp/xcode_emulation.py
-+++ b/tools/gyp/pylib/gyp/xcode_emulation.py
-@@ -507,9 +507,12 @@ class XcodeSettings(object):
-   def _XcodePlatformPath(self, configname=None):
-     sdk_root = self._SdkRoot(configname)
-     if sdk_root not in XcodeSettings._platform_path_cache:
--      platform_path = self._GetSdkVersionInfoItem(sdk_root,
-+      try:
-+        platform_path = self._GetSdkVersionInfoItem(sdk_root,
-                                                   '--show-sdk-platform-path')
--      XcodeSettings._platform_path_cache[sdk_root] = platform_path
-+        XcodeSettings._platform_path_cache[sdk_root] = platform_path
-+      except:
-+        XcodeSettings._platform_path_cache[sdk_root] = None
-     return XcodeSettings._platform_path_cache[sdk_root]
- 
-   def _SdkPath(self, configname=None):
-@@ -520,10 +523,13 @@ class XcodeSettings(object):
- 
-   def _XcodeSdkPath(self, sdk_root):
-     if sdk_root not in XcodeSettings._sdk_path_cache:
--      sdk_path = self._GetSdkVersionInfoItem(sdk_root, '--show-sdk-path')
--      XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
--      if sdk_root:
--        XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      try:
-+        sdk_path = self._GetSdkVersionInfoItem(sdk_root, '--show-sdk-path')
-+        XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
-+        if sdk_root:
-+          XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      except:
-+        XcodeSettings._sdk_path_cache[sdk_root] = None
-     return XcodeSettings._sdk_path_cache[sdk_root]
- 
-   def _AppendPlatformVersionMinFlags(self, lst):
-@@ -653,10 +659,11 @@ class XcodeSettings(object):
-       framework_root = sdk_root
-     else:
-       framework_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
- 
-     self.configname = None
-     return cflags
-@@ -908,10 +915,11 @@ class XcodeSettings(object):
-     sdk_root = self._SdkPath()
-     if not sdk_root:
-       sdk_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
- 
-     platform_root = self._XcodePlatformPath(configname)
-     if sdk_root and platform_root and self._IsXCTest():
-@@ -1683,6 +1691,9 @@ def _NormalizeEnvVarReferences(str):
-   """Takes a string containing variable references in the form ${FOO}, $(FOO),
-   or $FOO, and returns a string with all variable references in the form ${FOO}.
-   """
-+  if str is None:
-+    return ''
-+
-   # $FOO -> ${FOO}
-   str = re.sub(r'\$([a-zA-Z_][a-zA-Z0-9_]*)', r'${\1}', str)
- 
diff --git a/pkgs/development/web/nodejs/no-xcode.patch b/pkgs/development/web/nodejs/no-xcode.patch
deleted file mode 100644
index 27c9774ee6b1..000000000000
--- a/pkgs/development/web/nodejs/no-xcode.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-diff --git a/tools/gyp/pylib/gyp/xcode_emulation.py b/tools/gyp/pylib/gyp/xcode_emulation.py
-index 407ead0..8bf64e7 100644
---- a/tools/gyp/pylib/gyp/xcode_emulation.py
-+++ b/tools/gyp/pylib/gyp/xcode_emulation.py
-@@ -446,10 +446,16 @@ class XcodeSettings(object):
- 
-   def _XcodeSdkPath(self, sdk_root):
-     if sdk_root not in XcodeSettings._sdk_path_cache:
--      sdk_path = self._GetSdkVersionInfoItem(sdk_root, 'Path')
--      XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
--      if sdk_root:
--        XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      try:
-+        sdk_path = self._GetSdkVersionInfoItem(sdk_root, 'Path')
-+        XcodeSettings._sdk_path_cache[sdk_root] = sdk_path
-+        if sdk_root:
-+          XcodeSettings._sdk_root_cache[sdk_path] = sdk_root
-+      except:
-+        # if this fails it's because xcodebuild failed, which means
-+        # the user is probably on a CLT-only system, where there
-+        # is no valid SDK root
-+        XcodeSettings._sdk_path_cache[sdk_root] = None
-     return XcodeSettings._sdk_path_cache[sdk_root]
- 
-   def _AppendPlatformVersionMinFlags(self, lst):
-@@ -572,10 +578,11 @@ class XcodeSettings(object):
-       framework_root = sdk_root
-     else:
-       framework_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        cflags.append('-F' + directory.replace('$(SDKROOT)', framework_root))
- 
-     self.configname = None
-     return cflags
-@@ -826,10 +833,11 @@ class XcodeSettings(object):
-     sdk_root = self._SdkPath()
-     if not sdk_root:
-       sdk_root = ''
--    config = self.spec['configurations'][self.configname]
--    framework_dirs = config.get('mac_framework_dirs', [])
--    for directory in framework_dirs:
--      ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
-+    if 'SDKROOT' in self._Settings():
-+      config = self.spec['configurations'][self.configname]
-+      framework_dirs = config.get('mac_framework_dirs', [])
-+      for directory in framework_dirs:
-+        ldflags.append('-F' + directory.replace('$(SDKROOT)', sdk_root))
- 
-     is_extension = self._IsIosAppExtension() or self._IsIosWatchKitExtension()
-     if sdk_root and is_extension:
diff --git a/pkgs/development/web/nodejs/no-xcodebuild.patch b/pkgs/development/web/nodejs/no-xcodebuild.patch
deleted file mode 100644
index 94184152a03b..000000000000
--- a/pkgs/development/web/nodejs/no-xcodebuild.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff -Naur node-v8.9.4/deps/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_emulation.py node-v8.9.4-new/deps/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_emulation.py
---- node-v8.9.4/deps/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_emulation.py	2018-01-03 03:34:44.000000000 +0100
-+++ node-v8.9.4-new/deps/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_emulation.py	2018-03-12 11:15:37.972537585 +0100
-@@ -1251,7 +1251,8 @@
-   if XCODE_VERSION_CACHE:
-     return XCODE_VERSION_CACHE
-   try:
--    version_list = GetStdout(['xcodebuild', '-version']).splitlines()
-+    #version_list = GetStdout(['xcodebuild', '-version']).splitlines()
-+    version_list = ['Xcode 9.2', 'Build version 9C40b']
-     # In some circumstances xcodebuild exits 0 but doesn't return
-     # the right results; for example, a user on 10.7 or 10.8 with
-     # a bogus path set via xcode-select
diff --git a/pkgs/development/web/nodejs/nodejs.nix b/pkgs/development/web/nodejs/nodejs.nix
index 3f0ab5ff5067..b2ee7528814f 100644
--- a/pkgs/development/web/nodejs/nodejs.nix
+++ b/pkgs/development/web/nodejs/nodejs.nix
@@ -3,19 +3,18 @@
 # Updater dependencies
 , writeScript, coreutils, gnugrep, jq, curl, common-updater-scripts, nix
 , gnupg
-, darwin ? null
+, darwin, xcbuild
+, procps
 }:
 
 with stdenv.lib;
 
-{ enableNpm ? true, version, sha256, patches } @args:
+{ enableNpm ? true, version, sha256, patches ? [] } @args:
 
 let
 
   inherit (darwin.apple_sdk.frameworks) CoreServices ApplicationServices;
 
-
-
   baseName = if enableNpm then "nodejs" else "nodejs-slim";
 
   sharedLibDeps = { inherit openssl zlib libuv; } // (optionalAttrs (!stdenv.isDarwin) { inherit http-parser; });
@@ -48,9 +47,10 @@ in
     };
 
     buildInputs = optionals stdenv.isDarwin [ CoreServices ApplicationServices ]
-    ++ [ python2 which zlib libuv openssl ]
-    ++ optionals stdenv.isLinux [ utillinux http-parser ]
-    ++ optionals stdenv.isDarwin [ pkgconfig darwin.cctools ];
+      ++ [ python2 zlib libuv openssl http-parser ];
+
+    nativeBuildInputs = [ which utillinux ]
+      ++ optionals stdenv.isDarwin [ pkgconfig xcbuild ];
 
     configureFlags = sharedConfigureFlags ++ [ "--without-dtrace" ] ++ extraConfigFlags;
 
@@ -66,16 +66,27 @@ in
 
     inherit patches;
 
-    preBuild = optionalString stdenv.isDarwin ''
-      sed -i -e "s|tr1/type_traits|type_traits|g" \
-      -e "s|std::tr1|std|" src/util.h
-    '';
-
-    prePatch = ''
+    postPatch = ''
       patchShebangs .
       sed -i 's/raise.*No Xcode or CLT version detected.*/version = "7.0.0"/' tools/gyp/pylib/gyp/xcode_emulation.py
+
+      # fix tests
+      for a in test/parallel/test-child-process-env.js \
+               test/parallel/test-child-process-exec-env.js \
+               test/parallel/test-child-process-default-options.js \
+               test/fixtures/syntax/good_syntax_shebang.js \
+               test/fixtures/syntax/bad_syntax_shebang.js ; do
+        substituteInPlace $a \
+          --replace "/usr/bin/env" "${coreutils}/bin/env"
+      done
+    '' + optionalString stdenv.isDarwin ''
+      sed -i -e "s|tr1/type_traits|type_traits|g" \
+             -e "s|std::tr1|std|" src/util.h
     '';
 
+    checkInputs = [ procps ];
+    doCheck = false; # fails 4 out of 1453 tests
+
     postInstall = ''
       paxmark m $out/bin/node
       PATH=$out/bin:$PATH patchShebangs $out
diff --git a/pkgs/development/web/nodejs/v10.nix b/pkgs/development/web/nodejs/v10.nix
index d3746f123d3d..1d307c77f9fb 100644
--- a/pkgs/development/web/nodejs/v10.nix
+++ b/pkgs/development/web/nodejs/v10.nix
@@ -7,5 +7,4 @@ in
     inherit enableNpm;
     version = "10.7.0";
     sha256 = "0qp93ddbnvadimj11wnznwhkq8vq1f7q259iq8siy5b7r936kvil";
-    patches = lib.optionals stdenv.isDarwin [ ./no-xcode-v7.patch ./no-xcodebuild.patch ];
   }
diff --git a/pkgs/development/web/nodejs/v6.nix b/pkgs/development/web/nodejs/v6.nix
index 8eb05d67f088..2e94923441fc 100644
--- a/pkgs/development/web/nodejs/v6.nix
+++ b/pkgs/development/web/nodejs/v6.nix
@@ -7,5 +7,4 @@ in
     inherit enableNpm;
     version = "6.14.3";
     sha256 = "1jbrfk875aimm65wni059rrydmhp4z0hrxskq3ci6jvykxr8gwg3";
-    patches = lib.optionals stdenv.isDarwin [ ./no-xcode.patch ./no-xcodebuild.patch ];
   }
diff --git a/pkgs/development/web/nodejs/v8.nix b/pkgs/development/web/nodejs/v8.nix
index 96d96f08741f..c5f899f9bb42 100644
--- a/pkgs/development/web/nodejs/v8.nix
+++ b/pkgs/development/web/nodejs/v8.nix
@@ -7,5 +7,4 @@ in
     inherit enableNpm;
     version = "8.11.4";
     sha256 = "02d6a9sq81mbvap6h1ckwrang6wrxbkg0xxzn06wn2vbv7k7vkpv";
-    patches = lib.optionals stdenv.isDarwin [ ./no-xcode-v7.patch ./no-xcodebuild.patch ];
   }