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https://github.com/nix-community/nixos-generators.git
synced 2024-09-11 12:15:29 +03:00
Implement support for flakes
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parent
f8b23a0dd6
commit
9a8e56a767
19
flake.nix
19
flake.nix
@ -16,25 +16,34 @@
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installFlags = [ "PREFIX=$(out)" ];
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postFixup = ''
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wrapProgram $out/bin/nixos-generate \
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--prefix PATH : ${pkgs.lib.makeBinPath (with pkgs; [ jq coreutils findutils nix ])}
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--prefix PATH : ${pkgs.lib.makeBinPath (with pkgs; [ jq coreutils findutils ])}
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'';
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};
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# Currently, you need to mark your configurations with makeOverridable in
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# order to use nixos-generate on them.
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nixosConfigurations.example = nixpkgs.lib.makeOverridable nixpkgs.lib.nixosSystem {
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inherit system;
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modules = [
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./configuration.nix
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];
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};
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});
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defaultPackage = forAllSystems (system: self.packages."${system}".nixos-generators);
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devShell = forAllSystems (system: let
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pkgs = nixpkgs.legacyPackages."${system}";
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in pkgs.mkShell {
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buildInputs = with pkgs; [ jq coreutils findutils nix ];
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buildInputs = with pkgs; [ jq coreutils findutils ];
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});
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# Make it runnable with `nix app`
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apps = forAllSystems (system: {
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nixos-generators = {
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nixos-generate = {
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type = "app";
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program = "${self.packages."${system}".nixos-generators}/bin/nixos-generators";
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program = "${self.packages."${system}".nixos-generators}/bin/nixos-generate";
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};
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});
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defaultApp = forAllSystems (system: self.apps."${system}".nixos-generators);
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defaultApp = forAllSystems (system: self.apps."${system}".nixos-generate);
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};
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}
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@ -7,6 +7,8 @@ readonly libexec_dir="${0%/*}"
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readonly format_dir=$libexec_dir/formats
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configuration=${NIXOS_CONFIG:-$libexec_dir/configuration.nix}
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flake_uri=
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flake_attr=
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format_path=
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target_system=
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cores=
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@ -28,6 +30,8 @@ Options:
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* --help: shows this help
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* -c, --configuration PATH:
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select the nixos configuration to build. Default: $configuration
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* --flake URI:
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selects the nixos configuration to build, using flake uri like "~/dotfiles#my-config"
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* -f, --format NAME: select one of the pre-determined formats
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* --format-path PATH: pass a custom format
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* --list: list the available built-in formats
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@ -60,6 +64,16 @@ while [[ $# -gt 0 ]]; do
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configuration=$2
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shift
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;;
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--flake)
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# Note: The reason I'm using awk over cut is because cutting with an
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# out-of-bounds field will return the last in-bound field instead of empty
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# string.
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flake="$(echo "$2" | awk -F'#' '{ print $1; }')"
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flake_uri="$(nix flake info --json -- "$flake" | jq -r .url)"
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flake_attr="$(echo "$2" | awk -F'#' '{ print $2; }')"
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shift
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;;
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--cores)
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cores=$2
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shift
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@ -122,10 +136,18 @@ if [[ ! -f $format_path ]]; then
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abort "format file not found: $format_path"
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fi
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nix_args+=(
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-I "nixos-config=$configuration"
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-I "format-config=$format_path"
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)
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nix_args+=(--argstr formatConfig "$(realpath "$format_path")")
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if [[ -z "$flake_uri" ]]; then
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nix_args+=(
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-I "nixos-config=$configuration"
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)
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else
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nix_args+=(
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--argstr flakeUri "$flake_uri"
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--argstr flakeAttr "${flake_attr:-"$(hostname)"}"
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)
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fi
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if [[ -n $target_system ]]; then
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nix_args+=(--argstr system "$target_system")
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@ -1,7 +1,11 @@
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{ nixpkgs ? <nixpkgs>
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, configuration ? <nixos-config>
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, format-config ? <format-config>
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, system ? builtins.currentSystem
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, formatConfig
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, flakeUri ? null
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, flakeAttr ? null
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}:
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let
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module = { lib, ... }: {
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@ -17,12 +21,21 @@ let
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};
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};
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};
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# Will only get evaluated when used, so no worries
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flake = builtins.getFlake flakeUri;
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flakeSystem = flake.outputs.packages."${system}".nixosConfigurations."${flakeAttr}" or flake.outputs.nixosConfigurations."${flakeAttr}";
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in
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import "${toString nixpkgs}/nixos/lib/eval-config.nix" {
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inherit system;
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modules = [
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module
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format-config
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configuration
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];
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}
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if flakeUri != null then
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flakeSystem.override (attrs: {
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modules = attrs.modules ++ [ module formatConfig ];
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})
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else
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import "${toString nixpkgs}/nixos/lib/eval-config.nix" {
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inherit system;
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modules = [
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module
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formatConfig
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configuration
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];
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}
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