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Remove matplotlibrc.template. - #19603

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QuLogic merged 1 commit into
matplotlib:masterfrom
anntzer:mrc
Mar 31, 2021
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Remove matplotlibrc.template.#19603
QuLogic merged 1 commit into
matplotlib:masterfrom
anntzer:mrc

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@anntzer

@anntzer anntzer commented Feb 28, 2021

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PR Summary

See #19588, #19602.

PR Checklist

  • Has pytest style unit tests (and pytest passes).
  • Is Flake 8 compliant (run flake8 on changed files to check).
  • New features are documented, with examples if plot related.
  • Documentation is sphinx and numpydoc compliant (the docs should build without error).
  • Conforms to Matplotlib style conventions (install flake8-docstrings and run flake8 --docstring-convention=all).
  • New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
  • API changes documented in doc/api/next_api_changes/ (follow instructions in README.rst there).

@anntzer anntzer added the Build label Feb 28, 2021
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@jklymak

jklymak commented Feb 28, 2021

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We can close #19602 if simpler, though suggest stealing some of the commentary. Also suggest the softlink so no one complains...

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@jklymak

jklymak commented Feb 28, 2021 •
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More detail:

Previously matplotlibrc.template was changed in #15029 to be the canonical place to get the defaults for all the rcParams. However, these were read during __init__.py from lib/matplotlib/mpl-data/matplotlibrc. lib/matplotlib/mpl-data/matplotlibrc doesn't exist in the repo, and only gets created when setup.py is called. We can't read the defaults from matplotlbrc.template because that file probably doesn't exist in most user installs.

Aside from being somewhat rickety, the problem is that developers working from an editable install don't want to always call setup.py as it requires compiling the C extensions, and hence their lib/matplotlib/mpl-data/matplotlibrc can get out of sync with the library.

The solution here is to simply make lib/matplotlib/mpl-data/matplotlibrc the canonical source of the defaults, add it to version control, (maybe softlink it to matplotlib.template). setup.py can change lib/matplotlib/mpl-data/matplotlibrc in-place

See also:

jklymak
jklymak approved these changes Mar 2, 2021
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This seems fine to me, though I do not fully grok the setup.py changes.

@jklymak jklymak added this to the v3.5.0 milestone Mar 21, 2021
timhoffm
timhoffm reviewed Mar 23, 2021
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Comment thread setup.py Resolved
@anntzer
anntzer force-pushed the mrc branch 2 times, most recently from d572ccd to 058b683 Compare March 24, 2021 10:52
tacaswell
tacaswell reviewed Mar 24, 2021
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Comment thread setup.py Resolved
tacaswell
tacaswell approved these changes Mar 24, 2021
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modulo making sure it is a no-op in the default case.

@anntzer

anntzer commented Mar 27, 2021

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added a test checking the default backend.

@QuLogic
QuLogic merged commit f710ad3 into matplotlib:master Mar 31, 2021
@anntzer
anntzer deleted the mrc branch April 1, 2021 06:03
@QuLogic QuLogic mentioned this pull request Apr 1, 2021
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@anntzer anntzer mentioned this pull request Apr 22, 2021
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@QuLogic QuLogic mentioned this pull request Oct 19, 2021
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@tacaswell tacaswell tacaswell approved these changes
@jklymak jklymak jklymak approved these changes

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