"Fix" tests, add production RootRule and rule rexports :(

# Rust tests and lints will be skipped. Delete if not intended.
[ci skip-rust]

# Building wheels and fs_util will be skipped. Delete if not intended.
[ci skip-build-wheels]

src/python/pants/backend/python/rules/python_sources.py

@@ -142,5 +142,6 @@ def rules():
     return [
         *collect_rules(),
         *determine_source_files.rules(),
+        RootRule(StrippedPythonSourcesRequest),
         RootRule(UnstrippedPythonSourcesRequest),
     ]

src/python/pants/backend/python/typecheck/mypy/rules.py

@@ -4,7 +4,7 @@
 from dataclasses import dataclass
 from typing import Tuple
 
-from pants.backend.python.rules import download_pex_bin, pex
+from pants.backend.python.rules import download_pex_bin, pex, python_sources
 from pants.backend.python.rules.pex import (
     Pex,
     PexInterpreterConstraints,
@@ -140,6 +140,7 @@ def rules():
         *determine_source_files.rules(),
         *pants_bin.rules(),
         *pex.rules(),
+        *python_sources.rules(),
         *python_native_code.rules(),
         *strip_source_roots.rules(),
         *subprocess_environment.rules(),