nixpkgs/overlays/lib/filesystem.nix

   1 self: super:
   2 with builtins;
   3 let lib = super.lib; in
   4 {
   5   lib = (super.lib or {}) // {
   6     loadFile = name: toFile (baseNameOf (toString name)) (readFile name);
   7     findFiles = pattern:
   8       let go = curr:
   9         let dir = readDir curr; in
  10         let files = lib.filterAttrs (name: type:
  11           type == "regular" &&
  12           match pattern name != null) dir; in
  13         let dirs = lib.filterAttrs (name: type: type == "directory") dir; in
  14         map (name: "${curr}/${name}") (attrNames files) ++
  15         lib.concatMap (name: go "${curr}/${name}") (attrNames dirs)
  16         ;
  17       in go;
  18   };
  19 }