{ stdenv, fetchFromGitHub, python3Packages, litex }:

python3Packages.buildPythonPackage {
  name = "litedram";

  src = fetchFromGitHub {
    owner = "enjoy-digital";
    repo = "litedram";
    rev = "7fbe0b712ceda5bcc526a55a5c9c071eb21eb90e";
    sha256 = "0qfz0qkxkqjxn523chh2g3375wfwmljcahxqr27098pk618v0n8s";
  };

  patchPhase =
    ''
    rm examples/litedram_gen.py
    rm test/test_examples.py

    # FIXME: this spews out a lot of irrelevant "pattern doesn't match anything" warnings
    for file in `find test litedram -name "*.py"`; do
      substituteInPlace "$file" \
        --replace "from litex.gen.sim import *" "" \
        --replace "from migen.genlib.roundrobin import *" "from litex.roundrobin import *" \
        --replace migen nmigen.compat
    done
    '';

  # some tests fail at the moment, fix and re-enable later
  doCheck = false;

  propagatedBuildInputs = [ litex ];

  meta = with stdenv.lib; {
    description = "LiteDRAM memory controller (via nMigen compatibility mode)";
    homepage    = "http://enjoy-digital.fr";
    license     = licenses.bsd2;
    maintainers = [ maintainers.sb0 ];
  };
}