ENH: item and report uses absolute vs relative paths, changing both to resolved Pathlib.

Author: bsipocz

nbval/plugin.py

@@ -928,16 +928,16 @@ def _indent(s, indent='  '):
     return s
 
 
-skip_modules = []
+skip_modules = set()
 
 
 @pytest.hookimpl(trylast=True)
 def pytest_runtest_logreport(report):
 
     if 'failed' in report.outcome:
-        skip_modules.append(report.fspath)
+        skip_modules.add(Path(report.fspath).resolve())
 
 
 def pytest_runtest_call(item):
-    if item.path in skip_modules:
+    if Path(item.path) in skip_modules:
         pytest.skip(f"Due to the previous failure skipping rest of tests in {item.path}")