python3Packages.gguf: modernize, adopt, disable optional sentencepiece on Darwin (#466349)

pkgs/development/python-modules/gguf/default.nix

@@ -1,40 +1,62 @@
 {
   lib,
+  stdenv,
   buildPythonPackage,
-  fetchPypi,
-  pythonOlder,
-  numpy,
+  fetchFromGitHub,
+
+  # build-system
   poetry-core,
+
+  # dependencies
+  numpy,
+  pyside6,
   pyyaml,
   sentencepiece,
   tqdm,
+
+  # check inputs
+  pytestCheckHook,
 }:
+
 buildPythonPackage rec {
   pname = "gguf";
   version = "0.17.1";
-  format = "pyproject";
+  pyproject = true;
 
-  disabled = pythonOlder "3.7";
-
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-Nq1xqtkAo+dfyU6+lupgKfA6TkS+difvetPQPox7y1M=";
+  src = fetchFromGitHub {
+    owner = "ggml-org";
+    repo = "llama.cpp";
+    tag = "gguf-v${version}";
+    hash = "sha256-XjDMDca4pyc72WQee4h3R6Iq9M0LzO+6ukV6CBWQO1M=";
   };
 
+  sourceRoot = "${src.name}/gguf-py";
+
+  build-system = [ poetry-core ];
+
   dependencies = [
     numpy
-    poetry-core
+    pyside6
     pyyaml
-    sentencepiece
     tqdm
+  ]
+  # Sentencepiece is optional and its inclusion crashes darwin
+  # See https://github.com/NixOS/nixpkgs/issues/466092
+  ++ lib.optionals stdenv.hostPlatform.isLinux [
+    sentencepiece
   ];
 
+  nativeCheckInputs = [ pytestCheckHook ];
+
   pythonImportsCheck = [ "gguf" ];
 
-  meta = with lib; {
+  meta = {
     description = "Module for writing binary files in the GGUF format";
     homepage = "https://ggml.ai/";
-    license = licenses.mit;
-    maintainers = with maintainers; [ mitchmindtree ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [
+      mitchmindtree
+      sarahec
+    ];
   };
 }