dotfiles

 1{
 2  path ? /etc/nixos,
 3  host ? false,
 4}: let
 5  inherit
 6    (builtins)
 7    currentSystem
 8    getFlake
 9    head
10    match
11    pathExists
12    readFile
13    removeAttrs
14    toString
15    ;
16
17  flake =
18    if pathExists "${path}/flake.nix"
19    then getFlake "${toString path}"
20    else getFlake "/etc/nixos";
21
22  pkgs =
23    if (flake.inputs ? nixpkgs)
24    then import flake.inputs.nixpkgs.outPath {}
25    else if (flake.legacyPackages ? currentSystem)
26    then import flake.legacyPackages."${currentSystem}"
27    else import <nixpkgs> {};
28in
29  {
30    inherit flake;
31  }
32  // builtins
33  // (removeAttrs (pkgs // pkgs.lib) [
34    "options"
35    "config"
36  ])
37  // flake
38  // (flake.nixosConfigurations or {})
39  // (
40    if host
41    then
42      flake.nixosConfigurations."${head (
43        match ''
44          ([a-zA-Z0-9\-]+)
45        '' (readFile "/etc/hostname")
46      )}"
47    else {}
48  )