{ stdenv }: stdenv.mkDerivation { name = "libredirect-0"; unpackPhase = "cp ${./libredirect.c} libredirect.c"; buildPhase = '' gcc -Wall -std=c99 -O3 -shared libredirect.c -o libredirect.so -fPIC -ldl ''; installPhase = "mkdir -p $out/lib; cp libredirect.so $out/lib"; }