python312Packages.pytest-mpl: fix darwin (#350784)

2024-10-24 17:24:38 +01:00
parent cdeea95bc0 9f3e8a9f0b
commit d7ca2a5b5d
1 changed files with 3 additions and 0 deletions
@@ -43,10 +43,13 @@ buildPythonPackage rec {
    "tests/subtests/test_subtest.py"
  ];

+  # need to set MPLBACKEND=agg for headless matplotlib for darwin
+  # https://github.com/matplotlib/matplotlib/issues/26292
  # The default tolerance is too strict in our build environment
  # https://github.com/matplotlib/pytest-mpl/pull/9
  # https://github.com/matplotlib/pytest-mpl/issues/225
  preCheck = ''
+    export MPLBACKEND=agg
    substituteInPlace pytest_mpl/plugin.py \
      --replace-fail "DEFAULT_TOLERANCE = 2" "DEFAULT_TOLERANCE = 10"
    substituteInPlace tests/test_pytest_mpl.py \