Revert "Use pytest-platform-markers"

This reverts commit 2e12fb3c65.

It seems like it's currently broken...

pytest.ini

@@ -3,11 +3,19 @@ norecursedirs = .tox .venv
 addopts = --strict -rfEsw --faulthandler-timeout=70 --instafail
 markers =
     gui: Tests using the GUI (e.g. spawning widgets)
+    posix: Tests which only can run on a POSIX OS.
+    windows: Tests which only can run on Windows.
+    linux: Tests which only can run on Linux.
+    osx: Tests which only can run on OS X.
+    not_osx: Tests which can not run on OS X.
+    not_frozen: Tests which can't be run if sys.frozen is True.
     no_xvfb: Tests which can't be run with Xvfb.
+    frozen: Tests which can only be run if sys.frozen is True.
     integration: Tests which test a bigger portion of code, run without coverage.
     skip: Always skipped test.
     pyqt531_or_newer: Needs PyQt 5.3.1 or newer.
     xfail_norun: xfail the test with out running it
+    ci: Tests which should only run on CI.
 qt_log_level_fail = WARNING
 qt_log_ignore =
     ^SpellCheck: .*

tests/conftest.py

@@ -45,17 +45,33 @@ hypothesis.settings.load_profile('default')
 def _apply_platform_markers(item):
     """Apply a skip marker to a given item."""
     markers = [
+        ('posix', os.name != 'posix', "Requires a POSIX os"),
+        ('windows', os.name != 'nt', "Requires Windows"),
+        ('linux', not sys.platform.startswith('linux'), "Requires Linux"),
+        ('osx', sys.platform != 'darwin', "Requires OS X"),
+        ('not_osx', sys.platform == 'darwin', "Skipped on OS X"),
+        ('not_frozen', getattr(sys, 'frozen', False),
+            "Can't be run when frozen"),
+        ('frozen', not getattr(sys, 'frozen', False),
+            "Can only run when frozen"),
         ('skip', True, "Always skipped."),
         ('pyqt531_or_newer', PYQT_VERSION < 0x050301,
-            "Needs PyQt 5.3.1 or newer."),
+            "Needs PyQt 5.3.1 or newer"),
+        ('ci', 'CI' not in os.environ, "Only runs on CI."),
     ]
 
-    for searched_marker, condition, reason in markers:
+    for searched_marker, condition, default_reason in markers:
         marker = item.get_marker(searched_marker)
         if not marker or not condition:
             continue
 
-        skipif_marker = pytest.mark.skipif(condition, reason=reason)
+        if 'reason' in marker.kwargs:
+            reason = '{}: {}'.format(default_reason, marker.kwargs['reason'])
+            del marker.kwargs['reason']
+        else:
+            reason = default_reason + '.'
+        skipif_marker = pytest.mark.skipif(condition, *marker.args,
+                                           reason=reason, **marker.kwargs)
         item.add_marker(skipif_marker)
 
 

tox.ini

@@ -39,7 +39,6 @@ deps =
     pytest-repeat==0.2
     pytest-rerunfailures==1.0.1
     pytest-xvfb==0.2.0
-    pytest-platform-markers==0.1.0
     six==1.10.0
     termcolor==1.1.0
     vulture==0.8.1