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