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
   9         go = curr:
  10           let dir = readDir curr; in
  11           let
  12             files = lib.filterAttrs
  13               (name: type:
  14                 type == "regular" &&
  15                   match pattern name != null)
  16               dir;
  17           in
  18           let dirs = lib.filterAttrs (_name: type: type == "directory") dir; in
  19           map (name: "${curr}/${name}") (attrNames files) ++
  20             lib.concatMap (name: go "${curr}/${name}") (attrNames dirs)
  21         ;
  22       in
  23       go;
  24   };
  25 }