I am interested in using this tool and tried to use the VHDLParser debug tool, but it turns out that there are some incompatibilities with the packages that are currently released vs what the package says is acceptable.

The following requirements are causing issues.

pyTooling>=1.7.0
pyTooling.TerminalUI>=1.5.5

The latest version of pyTooling is 2.0.1 which no longer includes the Singleton metaclass and caused this line to fail:

  File "...\pyVHDLParser\pyVHDLParser\CLI\VHDLParser.py", line 36, in <module>
    from pyTooling.MetaClasses            import Singleton
ImportError: cannot import name 'Singleton' from 'pyTooling.MetaClasses' (...Python\Python39\lib\site-packages\pyTooling
\MetaClasses\__init__.py)

After falling back to pyTooling==1.7.0 there were further issues, but those were indirect import issues not necessarily caused by pyVHDLParser.

I upgraded pyTooling==1.9.5 but that was incompatible with pyTooling.TerminalUI==1.5.8. After downgrading back to pyTooling.TerminalUI==1.5.5 it finally worked.

Suggestion

Require pyTooling to be between 1.7.0 and 1.9.5. I haven't tested later version before 2.0.1 so perhaps just version <= 2 would work.
Require pyTooling.TerminalUI==1.5.5.