50 lines
1.2 KiB
Nix
50 lines
1.2 KiB
Nix
{
|
|
flakePath ? null,
|
|
hostnamePath ? "/etc/hostname",
|
|
registryPath ? /etc/nix/registry.json,
|
|
}: let
|
|
inherit (builtins) getFlake head match currentSystem readFile pathExists filter fromJSON;
|
|
|
|
selfFlake =
|
|
if pathExists registryPath
|
|
then filter (it: it.from.id == "self") (fromJSON (readFile registryPath)).flakes
|
|
else [];
|
|
|
|
flakePath' =
|
|
toString
|
|
(
|
|
if flakePath != null
|
|
then flakePath
|
|
else if selfFlake != []
|
|
then (head selfFlake).to.path
|
|
else "/etc/nixos"
|
|
);
|
|
|
|
flake =
|
|
if pathExists flakePath'
|
|
then getFlake flakePath'
|
|
else {};
|
|
hostname =
|
|
if pathExists hostnamePath
|
|
then head (match "([a-zA-Z0-9\\-]+)\n" (readFile hostnamePath))
|
|
else "";
|
|
|
|
nixpkgsFromInputsPath = flake.inputs.nixpkgs.outPath or "";
|
|
nixpkgs =
|
|
flake.pkgs.${currentSystem}.nixpkgs
|
|
or (
|
|
if nixpkgsFromInputsPath != ""
|
|
then import nixpkgsFromInputsPath {}
|
|
else {}
|
|
);
|
|
|
|
nixpkgsOutput = removeAttrs (nixpkgs // nixpkgs.lib or {}) ["options" "config"];
|
|
in
|
|
{inherit flake;}
|
|
// flake
|
|
// builtins
|
|
// (flake.nixosConfigurations or {})
|
|
// flake.nixosConfigurations.${hostname} or {}
|
|
// nixpkgsOutput
|
|
// {getFlake = path: getFlake (toString path);}
|