nix-config/home/nix/default.nix

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# Nix related settings
{ config, inputs, lib, options, pkgs, ... }:
let
cfg = config.my.home.nix;
channels = lib.my.merge [
{
# Allow me to use my custom package using `nix run self#pkg`
self = inputs.self;
# Add NUR to run some packages that are only present there
nur = inputs.nur;
# Use pinned nixpkgs when using `nix run pkgs#<whatever>`
pkgs = inputs.nixpkgs;
}
(lib.optionalAttrs cfg.overrideNixpkgs {
# ... And with `nix run nixpkgs#<whatever>`
nixpkgs = inputs.nixpkgs;
})
];
in
{
options.my.home.nix = with lib; {
enable = my.mkDisableOption "nix configuration";
addToRegistry = my.mkDisableOption "add inputs and self to registry";
overrideNixpkgs = my.mkDisableOption "point nixpkgs to pinned system version";
};
config = lib.mkIf cfg.enable (lib.mkMerge [
{
nix = {
2023-02-25 02:30:28 +01:00
package = lib.mkDefault pkgs.nix; # NixOS module sets it unconditionally
settings = {
experimental-features = [ "nix-command" "flakes" ];
};
};
}
(lib.mkIf cfg.addToRegistry {
nix.registry =
let
makeEntry = v: { flake = v; };
makeEntries = lib.mapAttrs (lib.const makeEntry);
in
makeEntries channels;
})
]);
}