{ stdenv, fetchFromGitHub }: stdenv.mkDerivation { pname = "re2"; version = "20190401"; src = fetchFromGitHub { owner = "google"; repo = "re2"; rev = "2019-04-01"; sha256 = "018b8z3fgcr02rmhxdz80r363k40938cbgmk1c9b46k6xkc4q0hd"; }; preConfigure = '' substituteInPlace Makefile --replace "/usr/local" "$out" # we're using gnu sed, even on darwin substituteInPlace Makefile --replace "SED_INPLACE=sed -i '''" "SED_INPLACE=sed -i" ''; preCheck = "patchShebangs runtests"; doCheck = true; checkTarget = "test"; doInstallCheck = true; installCheckTarget = "testinstall"; meta = { homepage = https://github.com/google/re2; description = "An efficient, principled regular expression library"; license = stdenv.lib.licenses.bsd3; platforms = with stdenv.lib.platforms; all; }; }