# Pastebin Jp5f4j50 { allowUnfree = true; packageOverrides = super: let self = super.pkgs; in { haskellPackages = super.haskellPackages.override { overrides = _: _: { time = (super.haskellPackages.callHackage "time" "1.6.0.1" {}); }; }; myPackages = super.buildEnv { name = "my-packages"; paths = [ self.haskellPackages.hackage-server ]; }; }; }