Merge pull request #965 from moreati/evict-simplejson

Remove vendored mitogen.compat.simplejson

Author: moreati

.ci/azure-pipelines-steps.yml

@@ -1,3 +1,10 @@
+# Each step entry runs a task (Azure Pipelines analog of an Ansible module).
+# https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/reference/?view=azure-pipelines&viewFallbackFrom=azure-devops#tool
+
+# `{script: ...}` is shorthand for `{task: CmdLine@<mumble>, inputs: {script: ...}}`.
+# https://learn.microsoft.com/en-us/azure/devops/pipelines/yaml-schema/steps-script?view=azure-pipelines
+# https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/reference/cmd-line-v2?view=azure-pipelines
+
 steps:
 - task: UsePythonVersion@0
   displayName: Install python
@@ -11,7 +18,7 @@ steps:
   displayName: Install build deps
   condition: and(eq(variables['python.version'], ''), eq(variables['Agent.OS'], 'Linux'))
 
-- script: python -mpip install tox
+- script: python -mpip install "tox<4.0"
   displayName: Install tooling
 
 - script: python -mtox -e "$(tox.env)"