[1.9] Remove Python 3.8 Support

Author: OwenKephart

.buildkite/dagster-buildkite/dagster_buildkite/python_version.py

@@ -7,7 +7,6 @@
 
 class AvailablePythonVersion(str, Enum):
     # Ordering is important here, because some steps will take the highest/lowest available version.
-    V3_8 = "3.8"
     V3_9 = "3.9"
     V3_10 = "3.10"
     V3_11 = "3.11"

.buildkite/dagster-buildkite/dagster_buildkite/steps/helm.py

@@ -20,7 +20,6 @@ def build_helm_steps() -> List[BuildkiteStep]:
         os.path.join("helm", "dagster", "schema"),
         unsupported_python_versions=[
             # run helm schema tests only once, on the latest python version
-            AvailablePythonVersion.V3_8,
             AvailablePythonVersion.V3_9,
             AvailablePythonVersion.V3_10,
             AvailablePythonVersion.V3_11,

.buildkite/dagster-buildkite/dagster_buildkite/steps/packages.py

@@ -272,7 +272,6 @@ def k8s_extra_cmds(version: str, _) -> List[str]:
     PackageSpec(
         "examples/with_airflow",
         unsupported_python_versions=[
-            AvailablePythonVersion.V3_9,
             AvailablePythonVersion.V3_10,
             AvailablePythonVersion.V3_11,
             AvailablePythonVersion.V3_12,

.buildkite/dagster-buildkite/dagster_buildkite/steps/test_project.py

@@ -67,7 +67,7 @@ def build_test_project_steps() -> List[GroupStep]:
             )
             .on_python_image(
                 # py version can be bumped when rebuilt
-                f"buildkite-build-test-project-image:py{AvailablePythonVersion.V3_8}-{BUILDKITE_BUILD_TEST_PROJECT_IMAGE_IMAGE_VERSION}",
+                f"buildkite-build-test-project-image:py{AvailablePythonVersion.V3_9}-{BUILDKITE_BUILD_TEST_PROJECT_IMAGE_IMAGE_VERSION}",
                 [
                     "AIRFLOW_HOME",
                     "AWS_ACCOUNT_ID",

.buildkite/dagster-buildkite/setup.py

@@ -9,7 +9,6 @@
     description="Tools for buildkite automation",
     url="https://github.com/dagster-io/dagster/tree/master/.buildkite/dagster-buildkite",
     classifiers=[
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "License :: OSI Approved :: Apache Software License",

docs/content/concepts/dagster-pipes/aws-glue.mdx

@@ -16,7 +16,6 @@
     description="Utility for taking automated screenshots from the Dagster UI",
     classifiers=[
         "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",