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nixos-config/overlays/file-tree.nix
2022-03-08 05:53:07 +01:00

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Nix

_: prev: let
inherit (prev) lib;
linkToPath = path: fileOrDir: (
if prev.lib.types.path.check fileOrDir
then ["ln -sT ${fileOrDir} ${path}"]
else
["mkdir -p ${path}"]
++ lib.concatLists (
lib.mapAttrsToList
(dirName: linkToPath "${path}/${dirName}")
fileOrDir
)
);
in {
setToDirectories = files:
prev.runCommand "set-to-directories" {}
(lib.concatStringsSep "\n" (linkToPath "$out" files));
}