chore: testing pylint working

.github/workflows/ci-static-analysis.yml

@@ -10,7 +10,7 @@ jobs:
       matrix:
         python-version:
           - "3.11"
-        os: ["ubuntu-latest"]
+        os: ["ubuntu-22.04"]
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/migrations-check.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         python-version:
           - "3.11"
         # 'pinned' is used to install the latest patch version of Django
@@ -126,7 +126,7 @@ jobs:
     if: always()
     needs:
       - check_migrations
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Decide whether the needed jobs succeeded or failed
         # uses: re-actors/alls-green@v1.2.1

.github/workflows/pylint-checks.yml

@@ -8,15 +8,15 @@ on:
 
 jobs:
   run-pylint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:
         include:
           - module-name: lms-1
-            path: "--django-settings-module=lms.envs.test lms/djangoapps/badges/ lms/djangoapps/branding/ lms/djangoapps/bulk_email/ lms/djangoapps/bulk_enroll/ lms/djangoapps/bulk_user_retirement/ lms/djangoapps/ccx/ lms/djangoapps/certificates/ lms/djangoapps/commerce/ lms/djangoapps/course_api/ lms/djangoapps/course_blocks/ lms/djangoapps/course_home_api/ lms/djangoapps/course_wiki/ lms/djangoapps/coursewarehistoryextended/ lms/djangoapps/debug/ lms/djangoapps/courseware/ lms/djangoapps/course_goals/ lms/djangoapps/rss_proxy/"
+            path: "lms/djangoapps/badges/ lms/djangoapps/branding/ lms/djangoapps/bulk_email/ lms/djangoapps/bulk_enroll/ lms/djangoapps/bulk_user_retirement/ lms/djangoapps/ccx/ lms/djangoapps/certificates/ lms/djangoapps/commerce/ lms/djangoapps/course_api/ lms/djangoapps/course_blocks/ lms/djangoapps/course_home_api/ lms/djangoapps/course_wiki/ lms/djangoapps/coursewarehistoryextended/ lms/djangoapps/debug/ lms/djangoapps/courseware/ lms/djangoapps/course_goals/ lms/djangoapps/rss_proxy/"
           - module-name: lms-2
-            path: "--django-settings-module=lms.envs.test lms/djangoapps/gating/ lms/djangoapps/grades/ lms/djangoapps/instructor/ lms/djangoapps/instructor_analytics/ lms/djangoapps/discussion/ lms/djangoapps/edxnotes/ lms/djangoapps/email_marketing/ lms/djangoapps/experiments/ lms/djangoapps/instructor_task/ lms/djangoapps/learner_dashboard/ lms/djangoapps/learner_home/ lms/djangoapps/lms_initialization/ lms/djangoapps/lms_xblock/ lms/djangoapps/lti_provider/ lms/djangoapps/mailing/ lms/djangoapps/mobile_api/ lms/djangoapps/monitoring/ lms/djangoapps/ora_staff_grader/ lms/djangoapps/program_enrollments/ lms/djangoapps/rss_proxy lms/djangoapps/static_template_view/ lms/djangoapps/staticbook/ lms/djangoapps/support/ lms/djangoapps/survey/ lms/djangoapps/teams/ lms/djangoapps/tests/ lms/djangoapps/user_tours/ lms/djangoapps/verify_student/ lms/djangoapps/mfe_config_api/ lms/envs/ lms/lib/ lms/tests.py"
+            path: "lms/djangoapps/gating/ lms/djangoapps/grades/ lms/djangoapps/instructor/ lms/djangoapps/instructor_analytics/ lms/djangoapps/discussion/ lms/djangoapps/edxnotes/ lms/djangoapps/email_marketing/ lms/djangoapps/experiments/ lms/djangoapps/instructor_task/ lms/djangoapps/learner_dashboard/ lms/djangoapps/learner_home/ lms/djangoapps/lms_initialization/ lms/djangoapps/lms_xblock/ lms/djangoapps/lti_provider/ lms/djangoapps/mailing/ lms/djangoapps/mobile_api/ lms/djangoapps/monitoring/ lms/djangoapps/ora_staff_grader/ lms/djangoapps/program_enrollments/ lms/djangoapps/rss_proxy lms/djangoapps/static_template_view/ lms/djangoapps/staticbook/ lms/djangoapps/support/ lms/djangoapps/survey/ lms/djangoapps/teams/ lms/djangoapps/tests/ lms/djangoapps/user_tours/ lms/djangoapps/verify_student/ lms/djangoapps/mfe_config_api/ lms/envs/ lms/lib/ lms/tests.py"
           - module-name: openedx-1
             path: "--django-settings-module=lms.envs.test openedx/core/types/ openedx/core/djangoapps/ace_common/ openedx/core/djangoapps/agreements/ openedx/core/djangoapps/api_admin/ openedx/core/djangoapps/auth_exchange/ openedx/core/djangoapps/bookmarks/ openedx/core/djangoapps/cache_toolbox/ openedx/core/djangoapps/catalog/ openedx/core/djangoapps/ccxcon/ openedx/core/djangoapps/commerce/ openedx/core/djangoapps/common_initialization/ openedx/core/djangoapps/common_views/ openedx/core/djangoapps/config_model_utils/ openedx/core/djangoapps/content/ openedx/core/djangoapps/content_libraries/ openedx/core/djangoapps/content_staging/ openedx/core/djangoapps/contentserver/ openedx/core/djangoapps/cookie_metadata/ openedx/core/djangoapps/cors_csrf/ openedx/core/djangoapps/course_apps/ openedx/core/djangoapps/course_date_signals/ openedx/core/djangoapps/course_groups/ openedx/core/djangoapps/courseware_api/ openedx/core/djangoapps/crawlers/ openedx/core/djangoapps/credentials/ openedx/core/djangoapps/credit/ openedx/core/djangoapps/dark_lang/ openedx/core/djangoapps/debug/ openedx/core/djangoapps/discussions/ openedx/core/djangoapps/django_comment_common/ openedx/core/djangoapps/embargo/ openedx/core/djangoapps/enrollments/ openedx/core/djangoapps/external_user_ids/ openedx/core/djangoapps/zendesk_proxy/ openedx/core/djangolib/ openedx/core/lib/ openedx/core/tests/ openedx/core/djangoapps/course_live/"
           - module-name: openedx-2
@@ -75,7 +75,7 @@ jobs:
     if: always()
     needs:
       - run-pylint
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Decide whether the needed jobs succeeded or failed
         # uses: re-actors/alls-green@v1.2.1

.github/workflows/quality-checks.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         python-version:
           - "3.11"
         node-version: [20]

.github/workflows/static-assets-check.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-22.04]
         python-version:
           - "3.11"
         node-version: [18, 20]

.github/workflows/unit-tests.yml

@@ -15,7 +15,7 @@ concurrency:
 jobs:
   run-tests:
     name: ${{ matrix.shard_name }}(py=${{ matrix.python-version }},dj=${{ matrix.django-version }},mongo=${{ matrix.mongo-version }})
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         python-version:
@@ -164,7 +164,7 @@ jobs:
           overwrite: true
 
   collect-and-verify:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
       - name: Setup Python
@@ -229,7 +229,7 @@ jobs:
   # https://github.com/orgs/community/discussions/33579
   success:
     name: Unit tests successful
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     if: always()
     needs: [run-tests]
     steps:
@@ -240,7 +240,7 @@ jobs:
           jobs: ${{ toJSON(needs) }}
 
   compile-warnings-report:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [run-tests]
     steps:
       - uses: actions/checkout@v4
@@ -268,7 +268,7 @@ jobs:
           overwrite: true
 
   merge-artifacts:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [compile-warnings-report]
     steps:
       - name: Merge Pytest Warnings JSON Artifacts
@@ -288,7 +288,7 @@ jobs:
   # Combine and upload coverage reports.
   coverage:
     if: (github.repository == 'edx/edx-platform-private') || (github.repository == 'openedx/edx-platform' && (startsWith(github.base_ref, 'open-release') == false))
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [run-tests]
     strategy:
       matrix:

openedx/core/djangoapps/xblock/api.py

@@ -25,13 +25,13 @@
 from xblock.exceptions import NoSuchUsage, NoSuchViewError
 from xblock.plugin import PluginMissingError
 
+from openedx.core.types import User as UserType
 from openedx.core.djangoapps.xblock.apps import get_xblock_app_config
 from openedx.core.djangoapps.xblock.learning_context.manager import get_learning_context_impl
 from openedx.core.djangoapps.xblock.runtime.learning_core_runtime import (
     LearningCoreFieldData,
     LearningCoreXBlockRuntime,
 )
-from openedx.core.djangoapps.xblock.runtime.runtime import XBlockRuntimeSystem as _XBlockRuntimeSystem
 from .utils import get_secure_token_for_xblock_handler, get_xblock_id_for_anonymous_user
 
 from .runtime.learning_core_runtime import LearningCoreXBlockRuntime
@@ -54,33 +54,21 @@ class CheckPerm(Enum):
     CAN_EDIT = 3
 
 
-def get_runtime_system():
+def get_runtime(user: UserType):
     """
-    Return a new XBlockRuntimeSystem.
-
-    TODO: Refactor to get rid of the XBlockRuntimeSystem entirely and just
-    create the LearningCoreXBlockRuntime and return it. We used to want to keep
-    around a long lived runtime system (a factory that returns runtimes) for
-    caching purposes, and have it dynamically construct a runtime on request.
-    Now we're just re-constructing both the system and the runtime in this call
-    and returning it every time, because:
-
-    1. We no longer have slow, Blockstore-style definitions to cache, so the
-       performance of this is perfectly acceptable.
-    2. Having a singleton increases complexity and the chance of bugs.
-    3. Creating the XBlockRuntimeSystem every time only takes about 10-30 µs.
-
-    Given that, the extra XBlockRuntimeSystem class just adds confusion. But
-    despite that, it's tested, working code, and so I'm putting off refactoring
-    for now.
+    Return a new XBlockRuntime.
+
+    Each XBlockRuntime is bound to one user (and usually one request or one
+    celery task). It is typically used just to load and render a single block,
+    but the API _does_ allow a single runtime instance to load multiple blocks
+    (as long as they're for the same user).
     """
-    params = get_xblock_app_config().get_runtime_system_params()
+    params = get_xblock_app_config().get_runtime_params()
     params.update(
-        runtime_class=LearningCoreXBlockRuntime,
         handler_url=get_handler_url,
         authored_data_store=LearningCoreFieldData(),
     )
-    runtime = _XBlockRuntimeSystem(**params)
+    runtime = LearningCoreXBlockRuntime(user, **params)
 
     return runtime
 
@@ -121,7 +109,7 @@ def load_block(usage_key, user, *, check_permission: CheckPerm | None = CheckPer
     # e.g. a course might specify that all 'problem' XBlocks have 'max_attempts'
     # set to 3.
     # field_overrides = context_impl.get_field_overrides(usage_key)
-    runtime = get_runtime_system().get_runtime(user=user)
+    runtime = get_runtime(user=user)
 
     try:
         return runtime.get_block(usage_key)

openedx/core/djangoapps/xblock/apps.py

@@ -16,9 +16,9 @@ class XBlockAppConfig(AppConfig):
     verbose_name = 'New XBlock Runtime'
     label = 'xblock_new'  # The name 'xblock' is already taken by ORA2's 'openassessment.xblock' app :/
 
-    def get_runtime_system_params(self):
+    def get_runtime_params(self):
         """
-        Get the XBlockRuntimeSystem parameters appropriate for viewing and/or
+        Get the LearningCoreXBlockRuntime parameters appropriate for viewing and/or
         editing XBlock content.
         """
         raise NotImplementedError
@@ -43,9 +43,9 @@ class LmsXBlockAppConfig(XBlockAppConfig):
     LMS-specific configuration of the XBlock Runtime django app.
     """
 
-    def get_runtime_system_params(self):
+    def get_runtime_params(self):
         """
-        Get the XBlockRuntimeSystem parameters appropriate for viewing and/or
+        Get the LearningCoreXBlockRuntime parameters appropriate for viewing and/or
         editing XBlock content in the LMS
         """
         return dict(
@@ -65,9 +65,9 @@ class StudioXBlockAppConfig(XBlockAppConfig):
     Studio-specific configuration of the XBlock Runtime django app.
     """
 
-    def get_runtime_system_params(self):
+    def get_runtime_params(self):
         """
-        Get the XBlockRuntimeSystem parameters appropriate for viewing and/or
+        Get the LearningCoreXBlockRuntime parameters appropriate for viewing and/or
         editing XBlock content in Studio
         """
         return dict(

openedx/core/djangoapps/xblock/runtime/learning_core_runtime.py

@@ -211,7 +211,7 @@ def get_block(self, usage_key, for_parent=None):
         # We've pre-loaded the fields for this block, so the FieldData shouldn't
         # consider these values "changed" in its sense of "you have to persist
         # these because we've altered the field values from what was stored".
-        self.system.authored_data_store.mark_unchanged(block)
+        self.authored_data_store.mark_unchanged(block)
 
         return block
 
@@ -221,7 +221,7 @@ def save_block(self, block):
 
         This gets called by block.save() - do not call this directly.
         """
-        if not self.system.authored_data_store.has_changes(block):
+        if not self.authored_data_store.has_changes(block):
             return  # No changes, so no action needed.
 
         # Verify that the user has permission to write to authored data in this
@@ -254,7 +254,7 @@ def save_block(self, block):
                 },
                 created=now,
             )
-        self.system.authored_data_store.mark_unchanged(block)
+        self.authored_data_store.mark_unchanged(block)
 
     def _get_component_from_usage_key(self, usage_key):
         """