With the dependencies captured in manifest.py, several packages in
python-stdlib were still unix-only due to direct or transitive dependencies
on unix-only or ffi modules. Or they just make no sense to run on
microcontroller targets.
In a few cases (e.g. base64) where possible, the unix dependency could be
removed.
Updates manifest.py to use the `unix_ffi=True` arg to `require()` for these
libraries.
Rename re-pcre to re now that unix-ffi is effectively its own namespace.
Update unix-ffi/README.md, and strengthen the wording that the unix
libraries are unmaintained.
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
The libraries in this directory aim to provide compatible implementations of
standard libraries to allow existing Python code to run un-modified on
MicroPython.
Implementation
Many libraries are implemented in pure Python, often based on the original
CPython implementation. (e.g. collections.defaultdict)
Some libraries are based on or extend from the built-in "micro" modules in the
MicroPython firmware, providing additional functionality that didn't need to
be written in C (e.g. collections, socket, struct).
Future plans (ideas for contributors):
Add README.md to each library explaining compatibility and limitations.
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