Log a warning when an executable is found, but does not have the exec…

… bit set

pyiron_snippets/resources.py

@@ -256,6 +256,9 @@ def cond(path):
             isexec = os.access(
                 path, os.X_OK, effective_ids=os.access in os.supports_effective_ids
             )
+            if isfile and not isexec:
+                from pyiron_snippets.logger import logger
+                logger.warning(f"Found file '{path}', but skipping it because it is not executable!")
             return isfile and isexec
 
         for path in filter(cond, self._resolver.search(self._glob)):

tests/unit/test_resources.py

@@ -2,6 +2,7 @@
 import os.path
 import unittest
 from pyiron_snippets.resources import ResourceNotFound, ResourceResolver, ExecutableResolver
+from pyiron_snippets.logger import logger
 
 class TestResolvers(unittest.TestCase):
     """
@@ -55,6 +56,8 @@ def test_executable(self):
         for suffix in (None, "sh", "bat"):
             with self.subTest(suffix=suffix):
                 res = ExecutableResolver([self.res1], code="code1", module="module1", suffix=suffix)
+                with self.assertLogs(logger, level="WARNING"):
+                    res.list()
                 if os.name != "nt":
                     # no exec bits are present on windows it seems
                     self.assertNotIn("versionnonexec", res.available_versions,