treewide: Add lots of platforms to packages with no meta

Build-tested on x86_64 Linux and on Darwin.

pkgs/development/compilers/jikes/default.nix

@@ -6,4 +6,8 @@ stdenv.mkDerivation {
     url = mirror://sourceforge/jikes/jikes-1.22.tar.bz2;
     md5 = "cda958c7fef6b43b803e1d1ef9afcb85";
   };
+
+  meta = {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }

pkgs/development/compilers/meta-environment/meta-build-env/default.nix

@@ -4,4 +4,8 @@
     url = http://www.meta-environment.org/releases/meta-build-env-0.1.tar.gz ;
     md5 = "827b54ace4e2d3c8e7605ea149b34293";
   };
+
+  meta = {
+    platforms = stdenv.lib.platforms.unix;
+  };
 }

pkgs/development/compilers/ocaml/3.08.0.nix

@@ -12,4 +12,8 @@ stdenv.mkDerivation {
   configureFlags = ["-no-tk" "-x11lib" xlibsWrapper];
   buildFlags = ["world" "bootstrap" "opt"];
   checkTarget = ["opt.opt"];
+
+  meta = {
+    platforms = stdenv.lib.platforms.linux;
+  };
 }