init flake

pkgs/python/pygreat.nix

@@ -0,0 +1,54 @@
+{
+  lib,
+  buildPythonPackage,
+  isPy3k,
+  fetchFromGitHub,
+  future,
+  pyusb,
+  setuptools,
+  setuptools-git-versioning,
+}:
+buildPythonPackage rec {
+  pname = "pygreat-2024";
+  version = "v2024.0.1";
+
+  src = fetchFromGitHub {
+    owner = "greatscottgadgets";
+    repo = "libgreat";
+    rev = "v2024.0.1";
+    hash = "sha256-k+0dGBohKglQEFN13mGsw0C6pCeQDRp+CwPW2GuKfuY=";
+  };
+
+  nativeBuildInputs = [
+    setuptools
+    setuptools-git-versioning
+  ];
+
+  propagatedBuildInputs = [
+    future
+    pyusb
+  ];
+
+  pyproject = true;
+
+  postPatch = ''
+    substituteInPlace host/pyproject.toml \
+      --replace-fail '"backports.functools_lru_cache",' "" \
+      --replace-fail 'dynamic = ["version"]' 'version = "${version}"'
+  '';
+
+  disabled = !isPy3k;
+
+  preBuild = ''
+    cd host
+    substituteInPlace setup.py --replace "'backports.functools_lru_cache'" ""
+    substituteInPlace pygreat/comms.py --replace "from backports.functools_lru_cache import lru_cache as memoize_with_lru_cache" "from functools import lru_cache as memoize_with_lru_cache"
+    echo "$version" > ../VERSION
+  '';
+
+  meta = with lib; {
+    description = "Python library for talking with libGreat devices";
+    homepage = "https://greatscottgadgets.com/greatfet/";
+    license = with licenses; [bsd3];
+  };
+}