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impure.nix: stringify path from NIX_PATH

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If impure.nix gets the path from NIX_PATH, the type is `path`, and `path+"/."` is a no-op. Stringify it first so `isDir` will return false if it's not, in fact, a dir. This way, single files can be specified with nixpkgs-overlays in the NIX_PATH.
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Yorick 2018-05-04 13:12:09 +02:00 committed by GitHub
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pkgs/top-level/impure.nix
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@ -41,7 +41,7 @@ in
# fix-point made by Nixpkgs.
overlays ? let
isDir = path: pathExists (path + "/.");
pathOverlays = try <nixpkgs-overlays> "";
pathOverlays = try (toString <nixpkgs-overlays>) "";
homeOverlaysFile = homeDir + "/.config/nixpkgs/overlays.nix";
homeOverlaysDir = homeDir + "/.config/nixpkgs/overlays";
overlays = path: