home-manager/modules/misc/nix.nix
2022-01-27 18:58:25 +01:00

87 lines
2.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.nix;
in {
options.nix = {
registry = mkOption {
type = types.attrsOf (types.submodule (let
inputAttrs = types.attrsOf
(types.oneOf [ types.str types.int types.bool types.package ]);
in { config, name, ... }: {
options = {
from = mkOption {
type = inputAttrs;
example = {
type = "indirect";
id = "nixpkgs";
};
description = "The flake reference to be rewritten.";
};
to = mkOption {
type = inputAttrs;
example = {
type = "github";
owner = "my-org";
repo = "my-nixpkgs";
};
description =
"The flake reference to which <option>from></option> is to be rewritten.";
};
flake = mkOption {
type = types.nullOr types.attrs;
default = null;
example = literalExpression "nixpkgs";
description = ''
The flake input to which <option>from></option> is to be rewritten.
'';
};
exact = mkOption {
type = types.bool;
default = true;
description = ''
Whether the <option>from</option> reference needs to match exactly. If set,
a <option>from</option> reference like <literal>nixpkgs</literal> does not
match with a reference like <literal>nixpkgs/nixos-20.03</literal>.
'';
};
};
config = {
from = mkDefault {
type = "indirect";
id = name;
};
to = mkIf (config.flake != null) ({
type = "path";
path = config.flake.outPath;
} // lib.filterAttrs (n: v:
n == "lastModified" || n == "rev" || n == "revCount" || n
== "narHash") config.flake);
};
}));
default = { };
description = ''
User level flake registry.
'';
};
registryVersion = mkOption {
type = types.int;
default = 2;
internal = true;
description = "The flake registry format version.";
};
};
config = mkIf (cfg.registry != { }) {
xdg.configFile."nix/registry.json".text = builtins.toJSON {
version = cfg.registryVersion;
flakes =
mapAttrsToList (n: v: { inherit (v) from to exact; }) cfg.registry;
};
};
}