system/virt/docker.nix


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{
  lib,
  config,
  ...
}: let
  inherit (lib) mkIf;
  cfg = config.virt.docker;
  rootfs = config.fileSystems."/".fsType;
in {
  config = mkIf cfg.enable {
    virtualisation.docker =
      {
        enable = true;
        enableOnBoot = false;
      }
      // mkIf (rootfs == "btrfs") {
        storageDriver = "btrfs";
      };
    users.groups.docker.members = [config.user];
  };
}