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{ inputs, lib, ... }:
{
# work around very annoying TMPDIR handling
# see: https://github.com/NixOS/nix/issues/7154
boot.tmp.useTmpfs = true;
systemd.services."nix-daemon".environment.TMPDIR = "/nix/tmp";
systemd.tmpfiles.rules = [
"d /nix/tmp 770 root nixbld"
];
nix = {
settings = {
trusted-users = [ "root" "@wheel" ];
auto-optimise-store = lib.mkDefault true;
experimental-features = [ "nix-command" "flakes" "repl-flake" ];
warn-dirty = false;
#flake-registry = ""; # Disable global flake registry This is a hold-over setting from Misterio77. Not sure significance but likely to do with nix.registry entry below.
};
# Add each flake input as a registry to make nix3 commands consistent with your flake
#registry = lib.mapAttrs (_: value: { flake = value; }) inputs;
# Add nixpkgs input to NIX_PATH
# This lets nix2 commands still use <nixpkgs>
#nixPath = [ "nixpkgs=${inputs.nixpkgs.outPath}" ];
# Garbage Collection
gc = {
automatic = true;
dates = "weekly";
randomizedDelaySec = "14m";
# Keep the last 2 generations
options = "--delete-older-than 28d";
};
};
}
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