Revert "qemu: 2.2.2 -> 2.3.0"

This reverts commit 19c259161b.

pkgs/development/libraries/attr/default.nix

@@ -14,9 +14,8 @@ stdenv.mkDerivation rec {
 
   installTargets = "install install-lib install-dev";
 
-  meta = with stdenv.lib; {
+  meta = {
     homepage = http://savannah.nongnu.org/projects/attr/;
     description = "Library and tools for manipulating extended attributes";
-    platforms = platforms.all;
   };
 }

pkgs/development/libraries/mesa/default.nix

@@ -182,11 +182,11 @@ stdenv.mkDerivation {
 
   passthru = { inherit libdrm version driverLink; };
 
-  meta = with stdenv.lib; {
+  meta = {
     description = "An open source implementation of OpenGL";
     homepage = http://www.mesa3d.org/;
     license = "bsd";
-    platforms = platforms.mesaPlatforms;
-    maintainers = with maintainers; [ eduarrrd simons vcunat ];
+    platforms = stdenv.lib.platforms.mesaPlatforms;
+    maintainers = with stdenv.lib.maintainers; [ eduarrrd simons vcunat ];
   };
 }

pkgs/development/libraries/nspr/default.nix

@@ -21,9 +21,8 @@ stdenv.mkDerivation {
 
   enableParallelBuilding = true;
 
-  meta = with stdenv.lib; {
+  meta = {
     homepage = http://www.mozilla.org/projects/nspr/;
     description = "Netscape Portable Runtime, a platform-neutral API for system-level and libc-like functions";
-    platforms = platforms.all;
   };
 }

pkgs/development/libraries/nss/default.nix

@@ -79,9 +79,8 @@ in stdenv.mkDerivation rec {
     find $out/bin -type f \( -name nss-config -o -delete \)
   '';
 
-  meta = with stdenv.lib; {
+  meta = {
     homepage = https://developer.mozilla.org/en-US/docs/NSS;
     description = "A set of libraries for development of security-enabled client and server applications";
-    platforms = platforms.all;
   };
 }