{ lib, stdenv, fetchFromGitHub , pkg-config, libftdi1 , python3, pypy3 # PyPy yields large improvements in build time and runtime performance, and # IceStorm isn't intended to be used as a library other than by the nextpnr # build process (which is also sped up by using PyPy), so we use it by default. # See 18839e1 for more details. # # FIXME(aseipp, 3/1/2021): pypy seems a bit busted since stdenv upgrade to gcc # 10/binutils 2.34, so short-circuit this for now in passthru below (done so # that downstream overrides can't re-enable pypy and break their build somehow) , usePyPy ? stdenv.hostPlatform.system == "x86_64-linux" }: stdenv.mkDerivation rec { pname = "icestorm"; version = "2020.12.04"; passthru = rec { pythonPkg = if (false && usePyPy) then pypy3 else python3; pythonInterp = pythonPkg.interpreter; }; src = fetchFromGitHub { owner = "YosysHQ"; repo = "icestorm"; rev = "7afc64b480212c9ac2ce7cb1622731a69a7d212c"; sha256 = "0vxhqs2fampglg3xlfwb35229iv96kvlwp1gyxrdrmlpznhkqdrk"; }; nativeBuildInputs = [ pkg-config ]; buildInputs = [ passthru.pythonPkg libftdi1 ]; makeFlags = [ "PREFIX=$(out)" ]; enableParallelBuilding = true; # fix icebox_vlog chipdb path. icestorm issue: # https://github.com/cliffordwolf/icestorm/issues/125 # # also, fix up the path to the chosen Python interpreter. for pypy-compatible # platforms, it offers significant performance improvements. patchPhase = '' substituteInPlace ./icebox/icebox_vlog.py \ --replace /usr/local/share "$out/share" for x in icefuzz/Makefile icebox/Makefile icetime/Makefile; do substituteInPlace "$x" --replace python3 "${passthru.pythonInterp}" done for x in $(find . -type f -iname '*.py'); do substituteInPlace "$x" \ --replace '/usr/bin/env python3' '${passthru.pythonInterp}' done ''; meta = { description = "Documentation and tools for Lattice iCE40 FPGAs"; longDescription = '' Project IceStorm aims at reverse engineering and documenting the bitstream format of Lattice iCE40 FPGAs and providing simple tools for analyzing and creating bitstream files. ''; homepage = "http://www.clifford.at/icestorm/"; license = lib.licenses.isc; maintainers = with lib.maintainers; [ shell thoughtpolice emily ]; platforms = lib.platforms.all; }; }