The default backend is chosen based on the content of the $DISPLAY
variable *and* a successfull call to libX11, loaded via dlopen().
The test fails because dlopen looks in /usr/lib and /lib, so matplotlib
falls back to a headless backend.
To reproduce try running:
$ nix-shell -I nixpkgs=$PWD -p \
'python3.withPackages (p: [ p.matplotlib ])' --run python
>>> import matplotlib.pyplot as plt
>>> assert plt.get_backend() == "TkAgg"
continuation of #109595
pkgconfig was aliased in 2018, however, it remained in
all-packages.nix due to its wide usage. This cleans
up the remaining references to pkgs.pkgsconfig and
moves the entry to aliases.nix.
python3Packages.pkgconfig remained unchanged because
it's the canonical name of the upstream package
on pypi.
* pythonPackages.matplotlib: add veprbl to maintainers
* pythonPackages.matplotlib: remove an old darwin hack
* pythonPackages.matplotlib: remove python and stdenv from buildInputs
* python3Packages.matplotlib: remove a hack for python33
* pythonPackages.matplotlib: remove outdated checkPhase
Downloading the baseline_images is not a real issue, building against
older freetype (local_freetype = True) is, perhaps, not what we
want. The good news is that the tests would pass (tested on 3.2.1) if
we were to enable them:
========== 6684 passed, 1332 skipped, 10 xfailed in 228.64s (0:03:48) ==========
* pythonPackages.matplotlib: provide setup.cfg from a file instead of a patch
* python3Packages.matplotlib: 3.1.3 -> 3.2.1
Numpy deprecated asscalar in 1.16. This will be fixed in the next
matplotlib version, but to avoid deprecation warnings (and because they
are breaking the sage testsuite), it can't hurt to backport the fix
already.
Upstream: https://github.com/matplotlib/matplotlib/pull/12478
We currently do not build mathplotlib with any backend. This can be very
confusing for users. They will try to use matplotlib and it will simply
display nothing (see #51337). We should ship at least one backend. `tk`
was chosen somewhat arbitrarily. The gtk backend is problematic (see
https://github.com/NixOS/nixpkgs/issues/50959#issuecomment-441327767)
so tkinter seems like a good choice.
There is already a backend provided on darwin so there is no reason to
include tk there.
The `buildPython*` function computes name from `pname` and `version`.
This change removes `name` attribute from all expressions in
`pkgs/development/python-modules`.
While at it, some other minor changes were made as well, such as
replacing `fetchurl` calls with `fetchPypi`.
