{ stdenv, fetchurl, nasm }: let arch = if stdenv.system == "x86_64-linux" then "bandwidth64" else if stdenv.system == "i686-linux" then "bandwidth32" else if stdenv.system == "x86_64-darwin" then "bandwidth-mac64" else if stdenv.system == "i686-darwin" then "bandwidth-mac32" else if stdenv.system == "i686-cygwin" then "bandwidth-win32" else throw "Unknown architecture"; in stdenv.mkDerivation rec { name = "bandwidth-${version}"; version = "1.4.2"; src = fetchurl { url = "http://zsmith.co/archives/${name}.tar.gz"; sha256 = "1p1kp5s3fdgy667q7mc9ywnps0sbj4lpr42561yhi59m69n8c3kd"; }; buildInputs = [ nasm ]; buildFlags = [ arch ] ++ stdenv.lib.optionals stdenv.cc.isClang [ "CC=clang" "LD=clang" ]; installPhase = '' mkdir -p $out/bin cp ${arch} $out/bin ln -s ${arch} $out/bin/bandwidth ''; meta = with stdenv.lib; { homepage = https://zsmith.co/bandwidth.html; description = "Artificial benchmark for identifying weaknesses in the memory subsystem"; license = licenses.mit; platforms = platforms.unix; maintainers = with maintainers; [ nckx wkennington ]; }; }