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