In Azure CLI installed by Homebrew, azure and azure.mgmt still have __init__.py files calling pkg_resources

[jiasli]

Even though #14372 migrated CLI packaging system to PEP 420 Implicit Namespace Packages, In Azure CLI installed by Homebrew, azure and azure.mgmt still have __init__.py files:

cat /opt/homebrew/Cellar/azure-cli/2.34.1/libexec/lib/python3.10/site-packages/azure/__init__.py
__import__('pkg_resources').declare_namespace(__name__)

cat /opt/homebrew/Cellar/azure-cli/2.34.1/libexec/lib/python3.10/site-packages/azure/mgmt/__init__.py
__import__('pkg_resources').declare_namespace(__name__)

This brings problems:

1. azure namespace package installed by extensions won't work: Dataprotection ModuleNotFoundError 'azure.mgmt.resourcegraph' azure-cli-extensions#4562
2. This defeats the purpose of migrating to PEP 420
3. Loading time of pkg_resources is slow and this slows down the execution speed of Azure CLI

[yonzhan]

packaging

[bebound]

Homebrew install azure-cli requirements from src. In some packages, the setup.py is not standard and installing these packages will create __init__.py in above folders.

For example, azure-keyvault 1.1.0 uses pkg_resources to accomplish namespace package. But its setup.py does not contain namespace_packages=['azure'], so pip install just copies the __init__.py to azure folder rather than skip it.

One possible fix is updating Homebrew formula to replace src with Wheels, as __init__.py is removed explicitly in Wheels by wheel build script, .

Affected packages

package	latest version	auzre/init.py	azure/mgmt/init.py
azure-keyvault-1.1.0	4.2.0	x
azure-loganalytics-0.1.0	0.1.1	x
azure-mgmt-consumption-2.0.0	9.0.0	x	x
azure-mgmt-datalake-analytics-0.2.1	0.6.0	x	x
azure-mgmt-datalake-store-0.5.0	0.5.0	x	x
azure-mgmt-relay-0.1.0	1.1.0	x	x

[bebound]

According to tdsmith/homebrew-pypi-poet#42 , homebrew-pypi-poet only support build from source and homebrew also has --no-binary param when install Python dependencies. It seems that we have to update the dependencies to fix this.