{stdenv, fetchurl }: stdenv.mkDerivation { name = "re2c-0.13.5"; src = fetchurl { url = mirror://sourceforge/re2c/re2c/0.13.5/re2c-0.13.5.tar.gz; sha256 = "1336c54b3cacjxg3grxdraq6a00yidr04z90605fhxglk89rbagk"; }; meta = { description = "Re2c is a tool for writing very fast and very flexible scanners."; }; }