Fingers crossed this will be the last tweak...

Author: jrfnl

.github/workflows/test.yml

@@ -96,6 +96,10 @@ jobs:
           # Skip test runs on builds which are also run in the coverage job.
           # Note: the tests on PHP 7.2 will still be run as the coverage build uses custom_ini settings for that version.
           - php: '5.4'
+            os: 'ubuntu-latest'
+            skip_tests: true
+          - php: '5.4'
+            os: 'windows-latest'
             skip_tests: true
           - php: '8.4'
             skip_tests: true
@@ -200,10 +204,22 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-latest', 'windows-latest']
-        php: ['5.4', '8.4']
+        php: ['8.4']
         custom_ini: [false]
 
         include:
+          - php: '5.4'
+            os: 'ubuntu-latest'
+            custom_ini: false
+          # Installing on Windows with PHP 5.4 runs into all sorts of problems with Composer.
+          # Considering PHP 5.4 is ancient, I deem it acceptable to run coverage on Windows on PHP 5.5.
+          # See this issue for more context (yes, I've seen this problem before):
+          # @link https://github.com/PHPCSStandards/composer-installer/pull/213
+          - php: '5.5'
+            os: 'windows-latest'
+            custom_ini: false
+
+          # Also run one coverage build with custom ini settings.
           - php: '7.2'
             os: 'ubuntu-latest'
             custom_ini: true