with import <stockholm/lib>; let pkgs = import <nixpkgs> {}; nixpkgs = builtins.fetchTarball { url = https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz; }; in import <stockholm/krebs/source.nix> { name = "onebutton"; override.nixpkgs = mkForce { file = toString nixpkgs; }; }