Package( [ ("name", "flex-2.5.4a") , ("build", Relative("flex/flex-build.sh")) , ("src", Call(IncludeFix("fetchurl/fetchurl.fix"), [ ("url", "ftp://ftp.nluug.nl/pub/gnu/flex/flex-2.5.4a.tar.gz") , ("md5", "bd8753d0b22e1f4ec87a553a73021adf") ])) , ("stdenv", IncludeFix("stdenv/stdenv.fix")) , ("yacc", IncludeFix("bison/bison.fix")) ] )