95 lines
2.6 KiB
Nix
95 lines
2.6 KiB
Nix
/*
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Manages the flake registry.
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See also
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- ./nix.nix
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- ./nix-channel.nix
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*/
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{ config, lib, ... }:
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let
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inherit (lib)
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filterAttrs
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literalExpression
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mapAttrsToList
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mkDefault
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mkIf
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mkOption
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types
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;
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cfg = config.nix;
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in
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{
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options = {
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nix = {
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registry = mkOption {
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type = types.attrsOf (types.submodule (
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let
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referenceAttrs = with types; attrsOf (oneOf [
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str
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int
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bool
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path
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package
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]);
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in
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{ config, name, ... }:
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{
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options = {
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from = mkOption {
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type = referenceAttrs;
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example = { type = "indirect"; id = "nixpkgs"; };
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description = "The flake reference to be rewritten.";
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};
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to = mkOption {
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type = referenceAttrs;
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example = { type = "github"; owner = "my-org"; repo = "my-nixpkgs"; };
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description = "The flake reference {option}`from` is rewritten to.";
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};
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flake = mkOption {
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type = types.nullOr types.attrs;
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default = null;
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example = literalExpression "nixpkgs";
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description = ''
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The flake input {option}`from` is rewritten to.
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'';
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};
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exact = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Whether the {option}`from` reference needs to match exactly. If set,
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a {option}`from` reference like `nixpkgs` does not
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match with a reference like `nixpkgs/nixos-20.03`.
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'';
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};
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};
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config = {
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from = mkDefault { type = "indirect"; id = name; };
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to = mkIf (config.flake != null) (mkDefault (
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{
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type = "path";
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path = config.flake.outPath;
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} // filterAttrs
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(n: _: n == "lastModified" || n == "rev" || n == "revCount" || n == "narHash")
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config.flake
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));
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};
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}
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));
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default = { };
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description = ''
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A system-wide flake registry.
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'';
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};
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};
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};
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config = mkIf cfg.enable {
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environment.etc."nix/registry.json".text = builtins.toJSON {
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version = 2;
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flakes = mapAttrsToList (n: v: { inherit (v) from to exact; }) cfg.registry;
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};
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};
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}
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