[Discussion/Bug] Replace jaraco.collections.KeyTransformingDict to avoid breaks in Bazel builds

[rahul-theorem]

I'm submitting a ...

• bug report
• feature request
• question about the decisions made in the repository

Do you want to request a feature or report a bug?
Bug/discussion

What is the current behavior?
We're using rules_python to manage our Python dependencies/toolchain in our Bazel build, and a library we're using (scoutsuite) that depends on cherrypy is leading to an error while resolving dependencies (stacktrace at bottom). This is due to a number of long-standing issues where jaraco.text has a space in a file (Lorem ipsum.txt) it loads on import, and Bazel doesn't support spaces in file names due to a number of reasons about its internal runfiles manifest structure (see bazelbuild/bazel#4327)

This is pulled into cherrypy by jaraco.collections.KeyTransformingDict in httputils.py. To support using cherrypy in a bazel build w/ rules_python/pip_compile, it'd be fairly straightforward to replace the KeyTransformingDict import from jaraco.collections with a version that's vendored in the repo

If the current behavior is a bug, please provide the steps to reproduce and if possible a screenshots and logs of the problem. If you can, show us your code.
Add cherrypy as a dependency in a Bazel build using rules_python and attempt to build any target that depends on it

Please tell us about your environment:

• Cheroot version: 10.0.0
• CherryPy version: 18.8.0
• Python version: 3.10.8
• OS: MacOS 13.6
• Browser: N/A

Other information

Stacktrace when attempting to resolve requirements:

Traceback (most recent call last):
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/_main/rules_python_entry_point_scout.py", line 11, in <module>
    from ScoutSuite.__main__ import run_from_cli
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_scoutsuite/site-packages/ScoutSuite/__main__.py", line 15, in <module>
    from ScoutSuite.core.server import Server
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_scoutsuite/site-packages/ScoutSuite/core/server.py", line 2, in <module>
    import cherrypy
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_cherrypy/site-packages/cherrypy/__init__.py", line 66, in <module>
    from ._cperror import (
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_cherrypy/site-packages/cherrypy/_cperror.py", line 135, in <module>
    from cherrypy.lib import httputil as _httputil
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_cherrypy/site-packages/cherrypy/lib/httputil.py", line 20, in <module>
    import jaraco.collections
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_jaraco_collections/site-packages/jaraco/collections.py", line 12, in <module>
    import jaraco.text
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_jaraco_text/site-packages/jaraco/text/__init__.py", line 231, in <module>
    files(__name__).joinpath('Lorem ipsum.txt').read_text(encoding='utf-8')
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/external/rules_python~0.26.0~python~python_3_11_x86_64-apple-darwin/lib/python3.11/pathlib.py", line 1058, in read_text
    with self.open(mode='r', encoding=encoding, errors=errors) as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/external/rules_python~0.26.0~python~python_3_11_x86_64-apple-darwin/lib/python3.11/pathlib.py", line 1044, in open
    return io.open(self, mode, buffering, encoding, errors, newline)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/private/var/tmp/_bazel/46aa123924747c319eb8f588f2d86f2a/execroot/_main/bazel-out/darwin-fastbuild/bin/scout.runfiles/rules_python~0.26.0~pip~deps_311_jaraco_text/site-packages/jaraco/text/Lorem ipsum.txt'