nixpkgs/pkgs/development/tools/misc/ltrace/default.nix

args : with args;	let 
        patch = ./ltrace_0.5-3.diff.gz;
	localDefs = with builderDefs;
	 builderDefs.passthru.function {
		src = /* put a fetchurl here */
	fetchurl {
		url = ftp://ftp.debian.org/debian/pool/main/l/ltrace/ltrace_0.5.orig.tar.gz;
		sha256 = "1nbjcnizc0w3p41g7hqf1qiany8qk4xs9g4zrlq4fpxdykdwla3v";
	};

		buildInputs = [elfutils ];
		configureFlags = [];
		goSrcDir = "
			cd ltrace-*;
		";
		preBuild = fullDepEntry (''
		  gunzip < ${patch} | patch -Np1
		  sed -e s@-Werror@@ -i Makefile.in
		'')["minInit" "doUnpack"];
	};
	in with localDefs;
let
	preConfigure = fullDepEntry ("
		sed -e 's@-o root -g root@@' -i Makefile.in;
	") [doUnpack minInit];
in
stdenv.mkDerivation rec {
	name = "ltrace-0.5";
	builder = writeScript (name + "-builder")
		(textClosure localDefs [preBuild preConfigure doConfigure doMakeInstall doForceShare]);
	meta = {
		description = "Library call tracer";
		inherit src;
	};
}