emu-app-config fails in 5.0.36 (not compatible with python 3.10)

[a1291762]

This has a similar root cause as #71, but apparently needs a separate issue so here it is.

pebble-tool 5.0.35 works in MacOS (26.5.1), which has python 3.10. But pebble-tool 5.0.36 does not. Specifically, when running emu-app-config, it fails like so.

[Thirteen:~/src/pebble/shd] [master] link$ pebble emu-app-config --emulator flint --vnc
Traceback (most recent call last):
  File "/Users/link/.local/bin/pebble", line 10, in <module>
    sys.exit(run_tool())
  File "/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.10/site-packages/pebble_tool/__init__.py", line 59, in run_tool
    args.func(args)
  File "/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.10/site-packages/pebble_tool/commands/base.py", line 47, in <lambda>
    parser.set_defaults(func=lambda x: cls()(x))
  File "/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.10/site-packages/pebble_tool/commands/emucontrol.py", line 125, in __call__
    browser.open_config_page(config_url, self.handle_config_close)
  File "/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.10/site-packages/pebble_tool/util/browser.py", line 36, in open_config_page
    with tempfile.NamedTemporaryFile(dir=os.path.expanduser("~"),
TypeError: NamedTemporaryFile() got an unexpected keyword argument 'delete_on_close'

This doc suggests that for python 3.10, there is no delete_on_close argument.
https://docs.python.org/3.10/library/tempfile.html#tempfile.NamedTemporaryFile

The Pebble SDK says that pebble-tool requires python 3.10, which is what MacOS ships with.
https://developer.repebble.com/sdk/

I do happen to have other python versions available, due to installing stuff via HomeBrew. So I can do this:

uv tool install pebble-tool@v5.0.36 --python 3.13

That avoids this particular error, but using python 3.13 with pebble tool (either 5.0.35 or 5.0.36) shows these warnings instead.

[Thirteen:~/src/pebble/shd] [master] link$ pebble emu-app-config --emulator flint --vnc
/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.13/site-packages/libpebble2/protocol/base/__init__.py:103: SyntaxWarning: invalid escape sequence '\*'
  :param \*\*kwargs: Initial values for any properties on the object.
/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.13/site-packages/libpebble2/protocol/base/types.py:192: SyntaxWarning: invalid escape sequence '\ '
  :param contents: A :class:`dict` mapping values of ``determinant`` to either :class:`Field`\ s or
/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.13/site-packages/libpebble2/protocol/base/types.py:427: SyntaxWarning: invalid escape sequence '\ '
  Represents a list of :class:`.PebblePacket`\ s, each of which is prefixed with a byte indicating its length.
/Users/link/.local/share/uv/tools/pebble-tool/lib/python3.13/site-packages/libpebble2/protocol/base/types.py:482: SyntaxWarning: invalid escape sequence '\ '
  Represents a list of either :class:`PebblePacket`\ s or :class:`Field`\ s with either a fixed number of entries,

[howeaj]

The Pebble SDK says that pebble-tool requires python 3.10

Actually it says

Note: pebble-tool requires Python 3.10, 3.11, 3.12, or 3.13 (higher than 3.9 and lower than 3.14)

and recommends using 3.13 in the installation snippet just before.

Sorry I didn't realise 3.10 was still supported when I made the PR for 4b8f3bf.

So it is both a problem that it doesn't work in 3.10, and also that it doesn't work (for you, or perhaps specifically the --vnc option?) in 3.13. The 3.13 problem could again be split to a separate issue since it seems unrelated.

Note uv will install 3.13 for itself if the system doesn't have it, so the system already having it or not doesn't matter AFAIK?

So in my opinion, it would not be unreasonable (and is obviously the least work in this repo) for pebble-tool to require python3.13+. Note 3.10 goes end-of-life in 5 months anyway. That's assuming uv smoothly handles the update if it changes the supported python versions.

[a1291762]

Apparently MacOS actually ships with python 3.9.
It seems I installed python 3.10 via .pkg some time ago, and it's installed into /Library/Frameworks/Python.framework and aliased to /usr/local/bin/python3.
I have python 3.13 and 3.14 from homebrew in /opt/homebrew.

pebble-tool 5.0.35 works well with python 3.10
pebble-tool 5.0.35 emits warnings with python 3.13
pebble-tool 5.0.35 errors with python 3.14

pebble-tool 5.0.36 errors with python 3.10
pebble-tool 5.0.36 emits warnings with python 3.13
pebble-tool 5.0.36 errors with python 3.14

I removed the 3.10 version, but uv did not install python 3.13, it tried to use python 3.9, which failed.

For now, I'm sticking to pebble-tool 5.0.35 with python 3.10. When there's some other combination that works, and is communicated on the website, I'll consider changing.