GitLab

Added "arm64" and "universal2" as possible PLAT values

Fix setting SDKROOT on github actions

Update Python URL for 3.9.2

Simplified code

fix typo

Fix for sdk version when xcrun returns nothing

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

Updated Python versions

Select the correct SDK for github CI and azure pipelines

Use latest Xcode version

Allow any Xcode 12 version

Update latest PyPy version

MRG: Refactor pip install to work round end of pip support

Move pip install commands into their respective platform / Python installs, for clarity.

Use `ensurepip` where possible.

Work around end of pip support for Pythons 2.7 and 3.5.

Deprecate install_pip function as confusing.  Move pip checks into
functions for individual platforms.

MRG: set MACOSX_DEPLOYMENT_TARGET for arm64 build

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>