diff --git a/.github/workflows/manual.yml b/.github/workflows/manual.yml
index 082dbe81..238ace6a 100644
--- a/.github/workflows/manual.yml
+++ b/.github/workflows/manual.yml
@@ -2,11 +2,19 @@ name: manual
 
 on:
   workflow_dispatch:
+    inputs:
+      OS:
+        description: Operating System
+        required: true
+        type: choice
+        options:
+        - windows-2019
+        - macOS-12
+        - ubuntu-22.04
 
 jobs:
-
-  tox-coverage-windows:
-    runs-on: windows-2019
+  tox-coverage:
+    runs-on: ${{ inputs.OS }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -17,9 +25,11 @@ jobs:
             3.10
             3.11
             3.12
-      - run: pip install -e ".[dev,all]"
+      - run: pip install -e ".[dev]"
       - run: tox -- --cov=../jsonargparse --cov-append
       - uses: actions/upload-artifact@v4
         with:
           name: coverage
           path: jsonargparse_tests/.coverage
+          include-hidden-files: true
+          if-no-files-found: error
diff --git a/pyproject.toml b/pyproject.toml
index 566fe4cc..38eb7a8c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -211,21 +211,22 @@ extras = coverage
 commands =
     # Test with pydantic<2
     python -c "\
-        from shutil import copy;\
-        copy('conftest.py', '{envtmpdir}/conftest.py');\
-        copy('test_dataclass_like.py', '{envtmpdir}/test_dataclass_like.py')\
+        from pathlib import Path; \
+        from shutil import copy; \
+        copy('conftest.py', Path(r'{envtmpdir}', 'conftest.py')); \
+        copy('test_dataclass_like.py', Path(r'{envtmpdir}', 'test_dataclass_like.py'))\
     "
     pip install "pydantic<2"
     python -m pytest {posargs} {envtmpdir}/test_dataclass_like.py
 
     # Test with pydantic>=2 importing from pydantic.v1
     python -c "\
-        import re, pathlib;\
-        path = pathlib.Path('{envtmpdir}/test_dataclass_like.py');\
-        content = path.read_text();\
-        content = re.sub(r'import pydantic', 'import pydantic.v1 as pydantic', content);\
-        content = re.sub(r'test_pydantic_types', '_test_pydantic_types', content);\
-        content = re.sub(r'^annotated = [^\\n]*', 'annotated = False', content, flags=re.MULTILINE);\
+        import re, pathlib; \
+        path = pathlib.Path(r'{envtmpdir}', 'test_dataclass_like.py'); \
+        content = path.read_text(); \
+        content = re.sub(r'import pydantic', 'import pydantic.v1 as pydantic', content); \
+        content = re.sub(r'test_pydantic_types', '_test_pydantic_types', content); \
+        content = re.sub(r'^annotated = [^\\n]*', 'annotated = False', content, flags=re.MULTILINE); \
         path.write_text(content)\
     "
     pip install "pydantic>=2"