Merge pull request #22602 from meeseeksmachine/auto-backport-of-pr-22596-on-v3.5.x

oscargus · web-flow · commit f7e38332c3f0 · 2022-03-04T18:19:07.000+01:00
Backport PR #22596 on branch v3.5.x (Fix backend in matplotlibrc if unset in mplsetup.cfg)
diff --git a/setup.py b/setup.py
@@ -214,7 +214,7 @@ def update_matplotlibrc(path):
     template_lines[backend_line_idx] = (
         "#backend: {}\n".format(setupext.options["backend"])
         if setupext.options["backend"]
-        else "##backend: Agg")
+        else "##backend: Agg\n")
     path.write_text("".join(template_lines))
 
 
