… and pillow to propagatedBuildInputs as required by upstream's dependency settings

See In light of #94108 (comment) and #94108 (comment) (two consecutive comments) for additional thoughts, quoted here:

Hm. https://discuss.wxpython.org/t/does-wxpython-4-0-6-must-also-install-numpy/32969/2
Of course it's never simple.. (that's also a pretty old post, IDK if things have changed)

I also don't quite understand why no one has run into the issue of buildPythonApplication trying to require numpy and pillow due to wxPython yet.

pip doesn't seem to provide any sane way of excluding deps pypa/pip#3090 , so I probably need to use some sort of indirect method if I deem them unnecessary.

Well, Robin (discuss.wxpython.org link above) does list --no-deps, but that seems rather shotgun.

The concrete example of these deps attempting to be pulled is this: f33d2a5#diff-9e9c51bfcf7e9562777c9c8d1b946f5a61995d0947955d188c7f1fc5b9a4c5c0R27

When run you get:

Executing pipInstallPhase
/build/source/dist /build/source
Processing ./WikidPad-2.4a1-py3-none-any.whl
Requirement already satisfied: wxpython>=4.0 in /nix/store/qy1ya8pcgjcjfhqvkm43pzb71w80122r-python3.7-wxPython-4.0.7.post2/lib/python3.7/site-packages (from WikidPad==2.4a1) (4.0.7.post2)
INFO: pip is looking at multiple versions of wikidpad to determine which version is compatible with other requirements. This could take a while.
ERROR: Could not find a version that satisfies the requirement pillow (from wxpython)
ERROR: No matching distribution found for pillow

I'm entirely unsure what the best thing to do here is.
Apparently wxPython has numpy and pillow them as runtime dependencies because they're needed relatively often, but they're actually kind of optional?
Additionally there are "other packages" that are used less commonly, which are also runtime dependencies, but they aren't listed in the requirements because they're needed less often?

(Where does one find a list of these optional dependencies?)

related: wxWidgets/Phoenix#1932

Hi RobinD42 , can you maybe clarify the dependency situation with numpy and pillow in wxPython?
Is there anything significant to pay attention to across versions?
Is there a list of other more optional packages somewhere? (see above post)

Specifically I would appreciate clarification on

Apparently wxPython has numpy and pillow them as runtime dependencies because they're needed relatively often, but they're actually kind of optional?
Additionally there are "other packages" that are used less commonly, which are also runtime dependencies, but they aren't listed in the requirements because they're needed less often?

in relation to https://discuss.wxpython.org/t/does-wxpython-4-0-6-must-also-install-numpy/32969/2 .

wxWidgets/Phoenix#1932 is already asking to make these dependencies optional, and they seem to have done a little work looking at what's needed where.

- and if I have your attention anyway, would you consider packaging wxPython with https://python-poetry.org/ ? I hear good things about it. (I could open an issue on the Phoenix issue tracker I guess). (It's not obvious whether the specific optional dependency handling is any better though at the time of https://stackoverflow.com/questions/60971502/python-poetry-how-to-install-optional-dependencies )

From a practical point of view, adding dependencies seems to be easier than removing them. - which contravariantly, means that the requirement should be removed from upstream.