luarocks-nix: init

luarocks-nix is a fork of luarocks that adds a "nix" command capable of
converting luarocks package descriptions into nix derivations (though nixpkgs is
still missing the lua infrastructure).

pkgs/development/tools/misc/luarocks/luarocks-nix.nix

@@ -0,0 +1,9 @@
+{ luarocks, fetchFromGitHub }:
+luarocks.overrideAttrs(old: {
+  src = fetchFromGitHub {
+    owner = "teto";
+    repo = "luarocks";
+    rev = "d669e8e118e6ca8bff05f32dbc9e5589e6ac45d2";
+    sha256 = "1lay3905a5sx2a4y68lbys0913qs210hcj9kn2lbqinw86c1vyc3";
+  };
+})

pkgs/top-level/all-packages.nix

@@ -7860,6 +7860,7 @@ in
     luajit luajit_2_0 luajit_2_1;
 
   luarocks = luaPackages.luarocks;
+  luarocks-nix = luaPackages.luarocks-nix;
 
   toluapp = callPackage ../development/tools/toluapp {
     lua = lua5_1; # doesn't work with any other :(

pkgs/top-level/lua-packages.nix

@@ -43,6 +43,8 @@ let
     inherit lua;
   };
 
+  luarocks-nix = callPackage ../development/tools/misc/luarocks/luarocks-nix.nix { };
+
   basexx = buildLuaPackage rec {
     version = "0.4.0";
     name = "basexx-${version}";