Enable OS specific Mypy checks (#1064)

* Enable OS specific Mypy checks

It would have helped to catch #1062 before the release.

* ci: split & improve

.github/workflows/tests.yml

@@ -11,20 +11,35 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  quality:
+    name: 🧑‍🏭 Quality & Docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+          cache: pip
+
+      - name: Install dependencies
+        run: python -m pip install tox
+
+      - name: Run linters
+        run: python -m tox -q -e types,lint
+
+      - name: Build the documentation
+        run: python -m tox -q -e docs
+
   tox:
     name: ${{ matrix.tox.name }} ${{ matrix.os.emoji }} ${{ matrix.os.name }} ${{ matrix.python }}
     runs-on: ${{ matrix.os.runs-on }}
-    timeout-minutes: ${{ matrix.tox.timeout }}
+    timeout-minutes: 15
     strategy:
       fail-fast: false
       matrix:
-        tox:
-          - name: Types
-            environment: types
-            timeout: 15
-          - name: Test
-            environment: py
-            timeout: 15
         os:
           - name: Linux
             matrix: linux
@@ -45,25 +60,6 @@ jobs:
           - "3.12"
           - "3.13-dev"
           - "pypy-3.9"
-        include:
-          - tox:
-              name: Linter
-              environment: lint
-              timeout: 5
-            python: "3.11"
-            os:
-              name: Linux
-              emoji: 🐧
-              runs-on: [ubuntu-latest]
-          - tox:
-              name: Docs
-              environment: docs
-              timeout: 5
-            python: "3.11"
-            os:
-              name: Linux
-              emoji: 🐧
-              runs-on: [ubuntu-latest]
         exclude:
           - os:
               matrix: macos
@@ -72,7 +68,6 @@ jobs:
               matrix: windows
             python: "pypy-3.9"
 
-
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -83,8 +78,8 @@ jobs:
           python-version: ${{ matrix.python }}
           cache: pip
 
-      - name: Install test dependencies
+      - name: Install dependencies
         run: python -m pip install tox
 
-      - name: Run ${{ matrix.tox.name }} in tox
-        run: python -m tox -q -e ${{ matrix.tox.environment }}
+      - name: Run tests
+        run: python -m tox -q -e py

changelog.rst

@@ -8,8 +8,9 @@ Changelog
 
 2024-xx-xx • `full history <https://github.com/gorakhargosh/watchdog/compare/v5.0.1...HEAD>`__
 
+- Enable OS specific Mypy checks (`#1064 <https://github.com/gorakhargosh/watchdog/pull/1064>`__)
 - [watchmedo] Fix ``tricks`` argument type of ``schedule_tricks()`` (`#1063 <https://github.com/gorakhargosh/watchdog/pull/1063>`__)
-- Thanks to our beloved contributors: @BoboTiG, @gnought
+- Thanks to our beloved contributors: @gnought, @BoboTiG
 
 5.0.1
 ~~~~~

src/watchdog/observers/kqueue.py

@@ -121,23 +121,23 @@ def absolute_path(path: bytes | str) -> bytes | str:
 
 def is_deleted(kev: select.kevent) -> bool:
     """Determines whether the given kevent represents deletion."""
-    return kev.fflags & select.KQ_NOTE_DELETE
+    return kev.fflags & select.KQ_NOTE_DELETE > 0
 
 
 def is_modified(kev: select.kevent) -> bool:
     """Determines whether the given kevent represents modification."""
     fflags = kev.fflags
-    return (fflags & select.KQ_NOTE_EXTEND) or (fflags & select.KQ_NOTE_WRITE)
+    return (fflags & select.KQ_NOTE_EXTEND > 0) or (fflags & select.KQ_NOTE_WRITE > 0)
 
 
 def is_attrib_modified(kev: select.kevent) -> bool:
     """Determines whether the given kevent represents attribute modification."""
-    return kev.fflags & select.KQ_NOTE_ATTRIB
+    return kev.fflags & select.KQ_NOTE_ATTRIB > 0
 
 
 def is_renamed(kev: select.kevent) -> bool:
     """Determines whether the given kevent represents movement."""
-    return kev.fflags & select.KQ_NOTE_RENAME
+    return kev.fflags & select.KQ_NOTE_RENAME > 0
 
 
 class KeventDescriptorSet:

src/watchdog/observers/winapi.py

@@ -83,25 +83,25 @@ class OVERLAPPED(ctypes.Structure):
 
 def _errcheck_bool(value: Any | None, func: Any, args: Any) -> Any:
     if not value:
-        raise ctypes.WinError()
+        raise ctypes.WinError()  # type: ignore[attr-defined]
     return args
 
 
 def _errcheck_handle(value: Any | None, func: Any, args: Any) -> Any:
     if not value:
-        raise ctypes.WinError()
+        raise ctypes.WinError()  # type: ignore[attr-defined]
     if value == INVALID_HANDLE_VALUE:
-        raise ctypes.WinError()
+        raise ctypes.WinError()  # type: ignore[attr-defined]
     return args
 
 
 def _errcheck_dword(value: Any | None, func: Any, args: Any) -> Any:
     if value == 0xFFFFFFFF:
-        raise ctypes.WinError()
+        raise ctypes.WinError()  # type: ignore[attr-defined]
     return args
 
 
-kernel32 = ctypes.WinDLL("kernel32")
+kernel32 = ctypes.WinDLL("kernel32")  # type: ignore[attr-defined]
 
 ReadDirectoryChangesW = kernel32.ReadDirectoryChangesW
 ReadDirectoryChangesW.restype = BOOL
@@ -334,7 +334,7 @@ def read_directory_changes(handle: HANDLE, path: str, *, recursive: bool) -> tup
             None,
         )
     except OSError as e:
-        if e.winerror == ERROR_OPERATION_ABORTED:
+        if e.winerror == ERROR_OPERATION_ABORTED:  # type: ignore[attr-defined]
             return event_buffer.raw, 0
 
         # Handle the case when the root path is deleted

src/watchdog/tricks/__init__.py

@@ -287,4 +287,4 @@ def kill_process(pid: int, stop_signal: int) -> None:
 else:
 
     def kill_process(pid: int, stop_signal: int) -> None:
-        os.killpg(os.getpgid(pid), stop_signal)  # type: ignore[attr-defined]
+        os.killpg(os.getpgid(pid), stop_signal)

tox.ini

@@ -40,5 +40,20 @@ usedevelop = true
 deps =
     -r requirements-tests.txt
 commands =
-    # "--platform win32" to not fail on ctypes.windll (it does not affect the overall check on other OSes)
-    mypy --platform win32 docs/source/examples src
+    # General
+    python -m mypy docs/source/examples
+    python -m mypy src
+
+    # OS specific
+    python -m mypy --platform darwin --disable-error-code unused-ignore \
+        src/watchdog/observers/fsevents.py \
+        src/watchdog/observers/fsevents2.py
+    python -m mypy --platform freebsd --disable-error-code unused-ignore \
+        src/watchdog/observers/kqueue.py
+    python -m mypy --platform linux --disable-error-code unused-ignore \
+        src/watchdog/observers/inotify.py \
+        src/watchdog/observers/inotify_buffer.py \
+        src/watchdog/observers/inotify_c.py
+    python -m mypy --platform win32 --disable-error-code unused-ignore \
+        src/watchdog/observers/read_directory_changes.py \
+        src/watchdog/observers/winapi.py