Fix a bunch of Hydra evaluation errors

pkgs/development/libraries/cogl/default.nix

@@ -35,6 +35,6 @@ stdenv.mkDerivation rec {
       render without stepping on each other's toes.
     '';
 
-    inherit (glib.meta) platforms;
+    platforms = stdenv.lib.platforms.mesaPlatforms;
   };
 }

pkgs/development/libraries/fox/fox-1.6.nix

@@ -31,6 +31,6 @@ stdenv.mkDerivation rec {
     homepage = "http://fox-toolkit.org";
     license = "LGPLv3";
     maintainers = [ stdenv.lib.maintainers.bbenoist ];
-    platforms = stdenv.lib.platforms.all;
+    platforms = stdenv.lib.platforms.mesaPlatforms;
   };
 }

pkgs/development/libraries/libdevil/default.nix

@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
     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";
     license = licenses.lgpl2;
-    platforms = platforms.all;
+    platforms = platforms.mesaPlatforms;
     maintainers = [ maintainers.phreedom maintainers.urkud ];
   };
 }

pkgs/development/libraries/phonon-backend-vlc/default.nix

@@ -20,7 +20,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "VideoLAN backend for Phonon multimedia framework";
-    inherit (qt4.meta) platforms;
+    platforms = stdenv.lib.platforms.linux;
     maintainers = [ stdenv.lib.maintainers.urkud ];
   };
 }

pkgs/development/python-modules/blivet/default.nix

@@ -53,5 +53,6 @@ in buildPythonPackage rec {
     homepage = "https://fedoraproject.org/wiki/Blivet";
     description = "Module for management of a system's storage configuration";
     license = [ "GPLv2+" "LGPLv2.1+" ];
+    platforms = stdenv.lib.platforms.linux;
   };
 }