1 files changed, 25 insertions, 0 deletions
diff --git a/lib/spack/external/pytest-fallback/_pytest/setupplan.py b/lib/spack/external/pytest-fallback/_pytest/setupplan.py
new file mode 100644
index 0000000000..e11bd40698
--- /dev/null
+++ b/lib/spack/external/pytest-fallback/_pytest/setupplan.py
@@ -0,0 +1,25 @@
+from __future__ import absolute_import, division, print_function
+
+import pytest
+
+
+def pytest_addoption(parser):
+    group = parser.getgroup("debugconfig")
+    group.addoption('--setupplan', '--setup-plan', action="store_true",
+                    help="show what fixtures and tests would be executed but "
+                    "don't execute anything.")
+
+
+@pytest.hookimpl(tryfirst=True)
+def pytest_fixture_setup(fixturedef, request):
+    # Will return a dummy fixture if the setuponly option is provided.
+    if request.config.option.setupplan:
+        fixturedef.cached_result = (None, None, None)
+        return fixturedef.cached_result
+
+
+@pytest.hookimpl(tryfirst=True)
+def pytest_cmdline_main(config):
+    if config.option.setupplan:
+        config.option.setuponly = True
+        config.option.setupshow = True