self: super: { gnomeExtensions = super.gnomeExtensions // { paperwm = super.gnomeExtensions.paperwm.overrideDerivation (old: { version = "42.0"; src = super.fetchFromGitHub { owner = "ccope"; repo = "PaperWM"; rev = "1e9004dc2cd1416cde86585056053853a8b86817"; sha256 = "sha256-ejyWIa4HX1lEIHc9qax8jgrgi992W6rkTK60FGzKI/E="; }; }); }; }