overlayln

Creates the directory structure of the union of the given directories using minimal number of symbolic links. Directories that come later have higher precedence over the ones that come before in case of a path collision.

example

❯ tree a
a
├── 0
├── 1
├── 2
├── 3
├── 4
└── inner
    ├── 5
    ├── 6
    ├── 7
    ├── 8
    └── 9

1 directory, 10 files

❯ tree b
b
└── 4

❯ overlayln -t c a b
❯ tree c
c
├── 0 -> a/0
├── 1 -> a/1
├── 2 -> a/2
├── 3 -> a/3
├── 4 -> b/4
└── inner -> a/inner

The flake also provides two Nix functions:

linkup

A function on top of overlayln whose parameters are similar to symlinkJoin's. Its behaviour is very similar to buildEnv's but without the derivation output magic.

example

linkup {
  name = "rofi";
  paths = with pkgs; [
    rofi
    (hiPrio (writeShellScriptBin "rofi" ''
      exec ${lib.getExe rofi} -i "$@"
    ''))
  ];
}

wrapPackage

A function on top of linkup and makeWrapper to wrap an executable of the given package.

example

wrapPackage pkgs.rofi {
  addFlags = [ "-i" ];
}