python312Packages.blis: fallback to generic architecure when needed

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

@@ -1,13 +1,19 @@
 {
   lib,
+  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
+
+  # build-system
   setuptools,
   cython,
-  hypothesis,
   numpy,
+
+  # tests
+  hypothesis,
   pytestCheckHook,
-  pythonOlder,
+
+  # passthru
   blis,
   numpy_1,
   gitUpdater,
@@ -18,8 +24,6 @@ buildPythonPackage rec {
   version = "1.2.1";
   pyproject = true;
 
-  disabled = pythonOlder "3.9";
-
   src = fetchFromGitHub {
     owner = "explosion";
     repo = "cython-blis";
@@ -27,25 +31,41 @@ buildPythonPackage rec {
     hash = "sha256-krUqAEPxJXdlolSbV5R0ZqrWaFuXh7IxSeFTsCr6iss=";
   };
 
-  preCheck = ''
-    # remove src module, so tests use the installed module instead
-    rm -rf ./blis
-  '';
-
   build-system = [
     setuptools
     cython
     numpy
   ];
 
+  env =
+    # Fallback to generic architectures when necessary:
+    # https://github.com/explosion/cython-blis?tab=readme-ov-file#building-blis-for-alternative-architectures
+    lib.optionalAttrs
+      (
+        # error: [Errno 2] No such file or directory: '/build/source/blis/_src/make/linux-cortexa57.jsonl'
+        (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64)
+
+        # clang: error: unknown argument '-mavx512pf'; did you mean '-mavx512f'?
+        # Patching blis/_src/config/knl/make_defs.mk to remove the said flag does not work
+        || (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isx86_64)
+      )
+      {
+        BLIS_ARCH = "generic";
+      };
+
   dependencies = [ numpy ];
 
+  pythonImportsCheck = [ "blis" ];
+
   nativeCheckInputs = [
     hypothesis
     pytestCheckHook
   ];
 
-  pythonImportsCheck = [ "blis" ];
+  # remove src module, so tests use the installed module instead
+  preCheck = ''
+    rm -rf ./blis
+  '';
 
   passthru = {
     tests = {
@@ -58,11 +78,11 @@ buildPythonPackage rec {
     };
   };
 
-  meta = with lib; {
-    changelog = "https://github.com/explosion/cython-blis/releases/tag/release-${src.tag}";
+  meta = {
+    changelog = "https://github.com/explosion/cython-blis/releases/tag/release-${version}";
     description = "BLAS-like linear algebra library";
     homepage = "https://github.com/explosion/cython-blis";
-    license = licenses.bsd3;
-    maintainers = with maintainers; [ nickcao ];
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ nickcao ];
   };
 }