Fix .pc files

cd.nix

@@ -60,10 +60,33 @@ in stdenv.mkDerivation rec {
     -Wno-incompatible-pointer-types
   '';
 
-  cdPc = builtins.toFile "cd.pc" (makePc "cd" version "gdk-3.0 pango");
-  cdContextPlusPc = builtins.toFile "cdcontextplus.pc" (makePc "cdcontextplus" version "pangocairo cairo");
-  cdGlPc = builtins.toFile "cdgl.pc" (makePc "cdcontextplus" version "gl");
-  cdImPc = builtins.toFile "cdim.pc" (makePc "cdim" version "im");
+  cdPc = builtins.toFile "cd.pc" (makePc
+    "cd"
+    "A vector graphics toolkit with device independent output"
+    version
+    "gdk-3.0 pango"
+  );
+
+  cdcontextplusPc = builtins.toFile "cdcontextplus.pc" (makePc
+    "cdcontextplus"
+    "A vector graphics toolkit with device independent output (dynamic driver loader"
+    version
+    "pangocairo cairo"
+  );
+
+  cdglPc = builtins.toFile "cdgl.pc" (makePc
+    "cdgl"
+    "A vector graphics toolkit with device independent output (OpenGL driver)"
+    version
+    "gl"
+  );
+
+  cdimPc = builtins.toFile "cdim.pc" (makePc
+    "cdim"
+    "A vector graphics toolkit with device independent output (IM support)"
+    version
+    "im"
+  );
   
   installPhase = ''
     runHook preInstall
@@ -83,9 +106,9 @@ in stdenv.mkDerivation rec {
     ln -fs $out/lib/libcdluaim52.so $out/share/lua/5.2/cdluaim.so
 
     cp -v ${cdPc} $out/lib/pkgconfig/cd.pc
-    cp -v ${cdContextPlusPc} $out/lib/pkgconfig/cdcontextplus.pc
-    cp -v ${cdGlPc} $out/lib/pkgconfig/cdgl.pc
-    cp -v ${cdImPc} $out/lib/pkgconfig/cdim.pc
+    cp -v ${cdcontextplusPc} $out/lib/pkgconfig/cdcontextplus.pc
+    cp -v ${cdglPc} $out/lib/pkgconfig/cdgl.pc
+    cp -v ${cdimPc} $out/lib/pkgconfig/cdim.pc
 
     runHook postInstall
   '';

im.nix

@@ -42,11 +42,40 @@ in stdenv.mkDerivation rec {
     "USE_LUA_VERSION=52"
   ];
 
-  imPc = builtins.toFile "im.pc" (makePc "im" version "libpng zlib");
-  imJp2Pc = builtins.toFile "im_jp2.pc" (makePc "im_jp2" version "im");
-  imProcessPc = builtins.toFile "im_process.pc" (makePc "im_process" version "im");
-  imProcessOmpPc = builtins.toFile "im_process_omp.pc" (makePc "im_process_omp" version "im");
-  imFftw3Pc = builtins.toFile "im_fftw3.pc" (makePc "im_fftw3" version "im_process fftw3");
+  imPc = builtins.toFile "im.pc" (makePc
+    "im"
+    "A toolkit for image representation, storage, capture and processing"
+    version
+    "libpng zlib"
+  );
+  
+  imJp2Pc = builtins.toFile "im_jp2.pc" (makePc
+    "im_jp2"
+    "A toolkit for image representation, storage, capture and processing (JP2 support)"
+    version
+    "im"
+  );
+
+  imProcessPc = builtins.toFile "im_process.pc" (makePc
+    "im_process"
+    "A toolkit for image representation, storage, capture and processing (processing library)"
+    version
+    "im"
+  );
+
+  imProcessOmpPc = builtins.toFile "im_process_omp.pc" (makePc
+    "im_process_omp"
+    "A toolkit for image representation, storage, capture and processing (processing library)"
+    version
+    "im"
+  );
+
+  imFftw3Pc = builtins.toFile "im_fftw3.pc" (makePc
+    "im_fftw3"
+    "A toolkit for image representation, storage, capture and processing (Fourier transform operations)"
+    version
+    "im_process fftw3"
+  );
   
   installPhase = ''
     runHook preInstall

iup.nix

@@ -74,16 +74,62 @@ in stdenv.mkDerivation rec {
     -Wno-implicit-function-declaration
     -Wno-incompatible-pointer-types
   '';
-  
 
-  iupPc = builtins.toFile "iup.pc" (makePc "iup" version "gtk+-3.0");
-  iupglPc = builtins.toFile "iupgl.pc" (makePc "iupgl" version "gl glu");
-  iupcdPc = builtins.toFile "iupcd.pc" (makePc "iupcd" version "iup cd");
-  iupcontrolsPc = builtins.toFile "iupcontrols.pc" (makePc "iupcontrols" version "iupcd");
-  iupPlotPc = builtins.toFile "iup_plot.pc" (makePc "iup_plot" version "iupcd");
-  iupimPc = builtins.toFile "iupim.pc" (makePc "iupim" version "iup im");
-  iupimglibPc = builtins.toFile "iupimglib.pc" (makePc "iupimglib" version "iup");
-  iupwebPc = builtins.toFile "iupweb.pc" (makePc "iupweb" version "webkit2gtk-4.1");
+  iupPc = builtins.toFile "iup.pc" (makePc
+    "iup"
+    "A portable toolkit for building graphical user interfaces"
+    version
+    "gtk+-3.0"
+  );
+
+  iupglPc = builtins.toFile "iupgl.pc" (makePc
+    "iupgl"
+    "A portable toolkit for building graphical user interfaces (OpenGL support)"
+    version
+    "gl glu"
+  );
+
+  iupcdPc = builtins.toFile "iupcd.pc" (makePc
+    "iupcd"
+    "A portable toolkit for building graphical user interfaces (CD support)"
+    version
+    "iup cd"
+  );
+
+  iupcontrolsPc = builtins.toFile "iupcontrols.pc" (makePc
+    "iupcontrols"
+    "A portable toolkit for building graphical user interfaces (extra widgets)"
+    version
+    "iupcd"
+  );
+
+  iupPlotPc = builtins.toFile "iup_plot.pc" (makePc
+    "iup_plot"
+    "A portable toolkit for building graphical user interfaces (plotting support)"
+    version
+    "iupcd"
+  );
+
+  iupimPc = builtins.toFile "iupim.pc" (makePc
+    "iupim"
+    "A portable toolkit for building graphical user interfaces (IM support)"
+    version
+    "iup im"
+  );
+
+  iupimglibPc = builtins.toFile "iupimglib.pc" (makePc
+    "iupimglib"
+    "A portable toolkit for building graphical user interfaces (image support)"
+    version
+    "iup"
+  );
+
+  iupwebPc = builtins.toFile "iupweb.pc" (makePc
+    "iupweb"
+    "A portable toolkit for building graphical user interfaces (web view widget)"
+    version
+    "webkit2gtk-4.1"
+  );
   
   installPhase = ''
     runHook preInstall

make-pc.nix

@@ -1,6 +1,6 @@
 { lib, builtins }:
 
-pkg: version: requires:
+pkg: description: version: requires:
   let
     pcTemplate = ''
         prefix=${placeholder "out"}
@@ -9,12 +9,13 @@ pkg: version: requires:
         includedir=${placeholder "out"}/include
         
         Name: @PKG@
+        Description: @DESCRIPTION@
         Version: @VERSION@
         Libs: -L${placeholder "out"}/lib -l@PKG@
         Cflags: -I${placeholder "out"}/include
         Requires: @REQUIRES@
       '';
 
-    from = [ "@PKG@" "@VERSION@" "@REQUIRES@" ];
-    to = [ pkg version requires ];
+    from = [ "@PKG@" "@DESCRIPTION" "@VERSION@" "@REQUIRES@" ];
+    to = [ pkg description version requires ];
   in builtins.replaceStrings from to pcTemplate