x@{builderDefsPackage , ...}: builderDefsPackage (a : let helperArgNames = ["stdenv" "fetchurl" "builderDefsPackage"] ++ []; buildInputs = map (n: builtins.getAttr n x) (builtins.attrNames (builtins.removeAttrs x helperArgNames)); sourceInfo = rec { baseName="celt"; version="0.5.1.3"; name="${baseName}-${version}"; url="http://downloads.xiph.org/releases/${baseName}/${name}.tar.gz"; hash="0bkam9z5vnrxpbxkkh9kw6yzjka9di56h11iijikdd1f71l5nbpw"; }; in rec { src = a.fetchurl { url = sourceInfo.url; sha256 = sourceInfo.hash; }; inherit (sourceInfo) name version; inherit buildInputs; /* doConfigure should be removed if not needed */ phaseNames = ["doConfigure" "doMakeInstall"]; meta = { description = "CELT - low-delay audio codec"; maintainers = with a.lib.maintainers; [ raskin ]; platforms = with a.lib.platforms; linux; license = "free"; branch = "0.5.1"; }; passthru = { updateInfo = { downloadPage = "http://www.celt-codec.org/downloads/"; }; }; }) x