{ lib, fetchurl, lilypond }: lilypond.overrideAttrs (oldAttrs: rec { version = "2.25.3"; src = fetchurl { url = "https://lilypond.org/download/sources/v${lib.versions.majorMinor version}/lilypond-${version}.tar.gz"; sha256 = "sha256-CVMMzL31NWd6PKf66m0ctBXFpqHMwxQibuifaU9lftg="; }; passthru.updateScript = { command = [ ./update.sh "unstable" ]; supportedFeatures = [ "commit" ]; }; })