Add nix-plugins package

pkgs/development/libraries/nix-plugins/default.nix

@@ -0,0 +1,25 @@
+{ stdenv, fetchgit, nix }:
+
+stdenv.mkDerivation {
+  name = "nix-plugins-1.0.0";
+
+  src = fetchgit {
+    url = git://github.com/shlevy/nix-plugins.git;
+    rev = "refs/tags/1.0.0";
+    sha256 = "e624de55cabc9014e77f21978d657089ae94ce161584b3d9dc3c9763658421b3";
+  };
+
+  buildInputs = [ nix ];
+
+  buildFlags = [ "NIX_INCLUDE=${nix}/include" ];
+
+  installFlags = [ "PREFIX=$(out)" ];
+
+  meta = {
+    description = "Collection of miscellaneous plugins for the nix expression language";
+    homepage = https://github.com/shlevy/nix-plugins;
+    license = stdenv.lib.licenses.mit;
+    maintaners = [ stdenv.lib.maintainers.shlevy ];
+    platforms = stdenv.lib.platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5708,6 +5708,10 @@ let
 
   newt = callPackage ../development/libraries/newt { };
 
+  nix-plugins = callPackage ../development/libraries/nix-plugins {
+    nix = pkgs.nixUnstable;
+  };
+
   nspr = callPackage ../development/libraries/nspr { };
 
   nss = lowPrio (callPackage ../development/libraries/nss { });