ci: test packages first offline then online

Author: henryborchers

Jenkinsfile

@@ -520,11 +520,17 @@ def get_sdist_linux(params, pythonVersions){
                                                         retry(3){
                                                             try{
                                                                 timeout(60){
-                                                                    sh(label: 'Running Tox',
-                                                                       script: """trap 'rm -rf .tox' EXIT
-                                                                                  uv run --only-group=tox-uv --python=${pythonVersion} --python-preference only-system tox --installpkg ${it.path} -e py${pythonVersion.replace('.', '').replace('+gil', '')}
-                                                                               """
-                                                                    )
+                                                                    def attempt = 0
+                                                                    retry(2){
+                                                                        attempt += 1
+                                                                        withEnv([(attempt == 1) ? "UV_OFFLINE=1" : 'UV_OFFLINE=0']){
+                                                                            sh(label: "Running Tox: ${(attempt == 1) ? 'Offline' : 'Online'}",
+                                                                               script: """trap 'rm -rf .tox' EXIT
+                                                                                          uv run --only-group=tox-uv --python=${pythonVersion} --python-preference only-system tox --installpkg ${it.path} -e py${pythonVersion.replace('.', '').replace('+gil', '')}
+                                                                                       """
+                                                                            )
+                                                                        }
+                                                                    }
                                                                 }
                                                             } catch(err){
                                                                 cleanWs(