CI fix

Author: codemasher

.github/workflows/ci.yml

@@ -145,7 +145,9 @@ jobs:
           coverage: none
 
       - name: "Install Sphinx"
-        run: pip install sphinx myst-parser sphinx-rtd-theme
+        run: |
+          apt install pipx
+          pipx install sphinx myst-parser sphinx-rtd-theme
 
       - name: "Install dependencies with composer"
         uses: ramsey/composer-install@v3

tests/BuildDirTrait.php

@@ -19,6 +19,7 @@
  */
 trait BuildDirTrait{
 
+	/** @var string */
 	private const _buildDir = __DIR__.'/../.build/';
 
 	/**