Use local tox plugin to set the VTK_DEFAULT_OPENGL_WINDOW dynamically with CI variable

beroda · beroda · commit f7c8862ba784 · 2025-09-10T22:37:38.000+02:00
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
@@ -15,9 +15,6 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
-env:
-  VTK_DEFAULT_OPENGL_WINDOW: "vtkEGLRenderWindow"
-
 permissions:
   id-token: none
 
diff --git a/toxfile.py b/toxfile.py
@@ -0,0 +1,19 @@
+from __future__ import annotations  # noqa: D100
+
+import os
+from typing import TYPE_CHECKING
+
+from tox.plugin import impl
+
+if TYPE_CHECKING:
+    from tox.config.sets import EnvConfigSet
+    from tox.session.state import State
+
+
+@impl
+def tox_add_env_config(env_conf: EnvConfigSet, state: State) -> None:  # noqa: ARG001, D103
+    if env_conf.env_name != 'docs-build':
+        return
+
+    if os.environ.get('CI', 'false').lower() == 'true':
+        env_conf['set_env'].update({'VTK_DEFAULT_OPENGL_WINDOW': 'vtkEGLRenderWindow'})
