Merge pull request #79 from nix-community/nur-combined-fix

fix import from local repository when `file` is used

lib/repoSource.nix

@@ -21,7 +21,7 @@ let
   localPath = ../repos + "/${name}";
 in
   if lib.pathExists localPath then
-    localPath
+    "${localPath}"
   else if lib.hasPrefix "https://github.com" attr.url && !submodules then
     fetchzip {
       url = "${attr.url}/archive/${revision.rev}.zip";