{ lib, pkgs, ... }: let inherit (import ) defaultApplications; flameshot-once = pkgs.callPackage {}; in { nixpkgs.overlays = [ (self: super: { write = super.callPackage { }; }) ]; environment.systemPackages = [ (flameshot-once.override { config.imgur = { enable = true; createUrl = "http://p.r/image"; deleteUrl = "http://p.r/image/delete/%1"; xdg-open.browser = (defaultApplications pkgs).browser; }; config.timeout = 1000; }) ]; }