- write classes/functions
- XML-based config
-x XML syntax
--- x regex btags - case-insensitive? this can be represented in-pattern:
    x https://stackoverflow.com/a/9655186/733214
--- remove sources stuff - that should be in the guest definitions.
-x configuration generator
--- x print end result xml config to stderr for easier redirection? or print prompts to stderr and xml to stdout?
-- x XSD for validation
-- Flask app for generating config?
-- TKinter (or pygame?) GUI?
--- https://docs.python.org/3/faq/gui.html
--- https://www.pygame.org/wiki/gui
- ensure we use docstrings in a Sphinx-compatible manner?
  https://sphinxcontrib-napoleon.readthedocs.io/en/latest/example_google.html
  at the very least document all the functions and such so pydoc's happy.

- locking

- for docs, 3.x (as of 3.10) was 2.4M.

- x Need ability to write/parse mtree specs (or a similar equivalent) for applying ownerships/permissions to overlay files
-- parsing is done. writing may? come later.
--- i think writing is mostly done/straightforward; still need to work on parsing mode octals for files


- package for PyPI:
# https://packaging.python.org/tutorials/distributing-packages/
# https://docs.python.org/3/distutils/apiref.html
# https://python-packaging.readthedocs.io/en/latest/minimal.html
# https://setuptools.readthedocs.io/en/latest/setuptools.html#new-and-changed-setup-keywords


BUGS.SQUARE-R00T.NET bugs/tasks:
#7:  Ensure conditional deps/imports for features only if used.
     Is this setup.py-compatible?
     nooope. just make everything a dep.
#14: Use os.path.join() for more consistency/pythonicness
#24: Run as regular user? (pychroot? fakeroot?)
#34: Build-time support for only building single phase of build
#39: Fix UEFI
#40: ISO overlay (to add e.g. memtest86+ to final ISO)
#43: Support resuming partial tarball downloads (Accept-Ranges: bytes)