Workaround GraalPy bugs on Windows

Author: timfel

cibuildwheel/platforms/windows.py

@@ -417,6 +417,19 @@ def build(options: Options, tmp_path: Path) -> None:
         for config in python_configurations:
             build_options = options.build_options(config.identifier)
             build_frontend = build_options.build_frontend or BuildFrontendConfig("build")
+
+            if (
+                config.identifier.startswith("gp")
+                and build_frontend.name == "build"
+                and "--no-isolation" not in build_frontend.args
+                and "-n" not in build_frontend.args
+            ):
+                # GraalPy fails to discover its standard library when a venv is created
+                # from a virtualenv seeded executable. See
+                # https://github.com/oracle/graalpython/issues/491 and remove this once
+                # fixed upstream.
+                build_frontend = BuildFrontendConfig("build[uv]", build_frontend.args)
+
             use_uv = build_frontend.name == "build[uv]" and can_use_uv(config)
             log.build_start(config.identifier)
 
@@ -493,6 +506,7 @@ def build(options: Options, tmp_path: Path) -> None:
                 elif build_frontend.name == "build" or build_frontend.name == "build[uv]":
                     if use_uv and "--no-isolation" not in extra_flags and "-n" not in extra_flags:
                         extra_flags.append("--installer=uv")
+
                     call(
                         "python",
                         "-m",

test/test_before_test.py

@@ -63,7 +63,9 @@ def test(tmp_path, build_frontend_env):
             # the 'false ||' bit is to ensure this command runs in a shell on
             # mac/linux.
             "CIBW_TEST_COMMAND": f"false || {utils.invoke_pytest()} {{project}}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "pytest {project}/test",
+            # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+            # until https://github.com/oracle/graalpython/issues/490 is fixed
+            "CIBW_TEST_COMMAND_WINDOWS": "where graalpy || pytest {project}/test",
             **build_frontend_env,
         },
     )

test/test_dependency_versions.py

@@ -125,6 +125,17 @@ def test_dependency_constraints(method, tmp_path, build_frontend_env_nouv):
 
     build_environment = {}
 
+    if (
+        utils.platform == "windows"
+        and method == "file"
+        and build_frontend_env_nouv["CIBW_BUILD_FRONTEND"] == "build"
+    ):
+        # GraalPy fails to discover its standard library when a venv is created
+        # from a virtualenv seeded executable. See
+        # https://github.com/oracle/graalpython/issues/491 and remove this once
+        # fixed upstream.
+        build_frontend_env_nouv["CIBW_SKIP"] = "gp*"
+
     for package_name, version in tool_versions.items():
         env_name = f"EXPECTED_{package_name.upper()}_VERSION"
         build_environment[env_name] = version
@@ -144,4 +155,13 @@ def test_dependency_constraints(method, tmp_path, build_frontend_env_nouv):
     # also check that we got the right wheels
     expected_wheels = utils.expected_wheels("spam", "0.1.0")
 
+    if (
+        utils.platform == "windows"
+        and method == "file"
+        and build_frontend_env_nouv["CIBW_BUILD_FRONTEND"] == "build"
+    ):
+        # See reference to https://github.com/oracle/graalpython/issues/491
+        # above
+        expected_wheels = [w for w in expected_wheels if "graalpy" not in w]
+
     assert set(actual_wheels) == set(expected_wheels)

test/test_testing.py

@@ -81,7 +81,9 @@ def test(tmp_path):
             # the 'false ||' bit is to ensure this command runs in a shell on
             # mac/linux.
             "CIBW_TEST_COMMAND": f"false || {utils.invoke_pytest()} {{project}}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || pytest {project}/test",
+            # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+            # until https://github.com/oracle/graalpython/issues/490 is fixed
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || where graalpy || pytest {project}/test",
         },
     )
 
@@ -102,7 +104,9 @@ def test_extras_require(tmp_path):
             # the 'false ||' bit is to ensure this command runs in a shell on
             # mac/linux.
             "CIBW_TEST_COMMAND": f"false || {utils.invoke_pytest()} {{project}}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || pytest {project}/test",
+            # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+            # until https://github.com/oracle/graalpython/issues/490 is fixed
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || where graalpy || pytest {project}/test",
         },
         single_python=True,
     )
@@ -134,7 +138,9 @@ def test_dependency_groups(tmp_path):
             # the 'false ||' bit is to ensure this command runs in a shell on
             # mac/linux.
             "CIBW_TEST_COMMAND": f"false || {utils.invoke_pytest()} {{project}}/test",
-            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || pytest {project}/test",
+            # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+            # until https://github.com/oracle/graalpython/issues/490 is fixed
+            "CIBW_TEST_COMMAND_WINDOWS": "COLOR 00 || where graalpy || pytest {project}/test",
         },
         single_python=True,
     )
@@ -189,7 +195,9 @@ def test_bare_pytest_invocation(tmp_path: Path, test_runner: str) -> None:
         add_env={
             "CIBW_TEST_REQUIRES": "pytest" if test_runner == "pytest" else "",
             "CIBW_TEST_COMMAND": (
-                "python -m pytest"
+                # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+                # until https://github.com/oracle/graalpython/issues/490 fixed
+                "graalpy.exe -c 1 || python -m pytest"
                 if test_runner == "pytest"
                 else "python -m unittest discover test spam_test.py"
             ),
@@ -211,7 +219,9 @@ def test_test_sources(tmp_path):
         add_env={
             "CIBW_TEST_REQUIRES": "pytest",
             "CIBW_TEST_COMMAND": "pytest",
-            "CIBW_TEST_COMMAND_WINDOWS": "pytest",
+            # pytest fails on GraalPy 24.2.0 on Windows so we skip it there
+            # until https://github.com/oracle/graalpython/issues/490 is fixed
+            "CIBW_TEST_COMMAND_WINDOWS": "where graalpy || pytest",
             "CIBW_TEST_SOURCES": "test",
         },
     )