guix_mirror_bot pushed a commit to branch python-team
in repository guix.
commit e41024095cf00a1b88ecad132564ef1b06cb6e54
Author: Jake Forster <jakecameron.fors...@gmail.com>
AuthorDate: Fri Jul 4 17:11:30 2025 +0930
gnu: python-matplotlib: Patch dlopen so MPLBACKEND is not overridden.
Fixes <https://issues.guix.gnu.org/70687>.
In Python, importing 'matplotlib.pyplot' sets the backend used by Matplotlib
to Agg unless it was set to WebAgg or nbAgg. This is because it incorrectly
determines that no event loop can be started due to a failed dlopen call for
'libX11.so.6'. This is fixed by patching the dlopen path.
* gnu/packages/python-xyz.scm (python-matplotlib) [arguments]
<#:phases>: Add 'patch-dlopen.
Change-Id: I3e45c9a2921374e3b16cfcbd8e3e1e91780da306
Signed-off-by: Sharlatan Hellseher <sharlata...@gmail.com>
---
gnu/packages/python-xyz.scm | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/gnu/packages/python-xyz.scm b/gnu/packages/python-xyz.scm
index ea09c02691..e8ce64e07a 100644
--- a/gnu/packages/python-xyz.scm
+++ b/gnu/packages/python-xyz.scm
@@ -11278,6 +11278,11 @@ reason=\"unknown minor image differences\")\n" match)))
;; non-deterministically when run in parallel (see:
;;
https://github.com/matplotlib/matplotlib/issues/22992).
"lib/matplotlib/tests/test_compare_images.py"))))
+ (add-after 'unpack 'patch-dlopen
+ (lambda* (#:key inputs #:allow-other-keys)
+ (substitute* "src/_c_internal_utils.c"
+ (("libX11.so.6")
+ (search-input-file inputs "lib/libX11.so.6")))))
(add-before 'build 'configure-environment
(lambda* (#:key inputs #:allow-other-keys)
;; Fix rounding errors when using the x87 FPU.
