Update markers for PyPy

tests/test_env.py

@@ -192,7 +192,6 @@ def test_default_impl_install_cmd_well_formed(
         ]
 
 
-@pytest.mark.skipif(IS_PYPY, reason='uv does not declare support for PyPy')
 def test_uv_impl_install_cmd_well_formed(
     mocker: pytest_mock.MockerFixture,
 ):
@@ -238,11 +237,13 @@ def test_requirement_installation(
     package_test_flit: str,
     env_impl: build.env.EnvImpl | None,
 ):
+    if IS_PYPY and env_impl == 'venv+uv':
+        pytest.xfail('uv cannot find PyPy executable')
+
     with build.env.DefaultIsolatedEnv(env_impl) as env:
         env.install([f'test-flit @ {Path(package_test_flit).as_uri()}'])
 
 
-@pytest.mark.skipif(IS_PYPY, reason='uv does not declare support for PyPy')
 def test_uv_missing(
     mocker: pytest_mock.MockerFixture,
 ):

tests/test_integration.py

@@ -3,7 +3,6 @@
 import importlib.util
 import os
 import os.path
-import platform
 import re
 import shutil
 import subprocess
@@ -18,7 +17,7 @@
 
 
 IS_WINDOWS = sys.platform.startswith('win')
-IS_PYPY3 = platform.python_implementation() == 'PyPy'
+IS_PYPY = sys.implementation.name == 'pypy'
 
 
 INTEGRATION_SOURCES = {
@@ -93,10 +92,12 @@ def _ignore_folder(base, filenames):
     ],
 )
 @pytest.mark.isolated
-def test_build(monkeypatch, project, args, call, tmp_path):
+def test_build(request, monkeypatch, project, args, call, tmp_path):
+    if args == ['--env-impl', 'venv+uv'] and IS_PYPY:
+        pytest.xfail('uv cannot find PyPy executable')
     if project in {'build', 'flit'} and '--no-isolation' in args:
         pytest.xfail(f"can't build {project} without isolation due to missing dependencies")
-    if project == 'Solaar' and IS_WINDOWS and IS_PYPY3:
+    if project == 'Solaar' and IS_WINDOWS and IS_PYPY:
         pytest.xfail('Solaar fails building wheels via sdists on Windows on PyPy 3')
 
     monkeypatch.chdir(tmp_path)