Add support for Python 3.10 to usd-core PyPI package

This change adds 3.10 to the PyPI build matrix on
Azure. Doing so required manually installing CMake 3.24
on top of the manylinux2014 docker image we currently
use, since 3.24+ is required for Python 3.10. Attempting
to use a newer docker image caused crashes when using
the generated wheels for some unknown reason.

(Internal change: 2260771)

azure-pypi-pipeline.yml

@@ -51,6 +51,9 @@ stages:
         Python39:
           PYTHON_INTERPRETER: /opt/python/cp39-cp39/bin/python
           PYTHON_TAG: cp39
+        Python310:
+          PYTHON_INTERPRETER: /opt/python/cp310-cp310/bin/python
+          PYTHON_TAG: cp310
     timeoutInMinutes: 90
     pool:
       vmImage: Ubuntu-20.04
@@ -116,6 +119,9 @@ stages:
         Python39:
           PYTHON_VERSION_SPEC: 3.9
           PYTHON_TAG: cp39
+        Python310:
+          PYTHON_VERSION_SPEC: 3.10
+          PYTHON_TAG: cp310
     timeoutInMinutes: 90
     pool:
       vmImage: 'windows-2019'
@@ -171,6 +177,10 @@ stages:
           PYTHON_VERSION_SPEC: 3.9
           PYTHON_INTERPRETER: python3.9
           PYTHON_TAG: cp39
+        Python310:
+          PYTHON_VERSION_SPEC: 3.10
+          PYTHON_INTERPRETER: python3.10
+          PYTHON_TAG: cp310
     timeoutInMinutes: 180
     pool:
       vmImage: 'macOS-11'
@@ -264,6 +274,10 @@ stages:
           PYTHON_VERSION_SPEC: 3.9
           IMAGE: 'Ubuntu-20.04'
           PYTHON_INTERPRETER: python3
+        Linux_Python310:
+          PYTHON_VERSION_SPEC: 3.10
+          IMAGE: 'Ubuntu-20.04'
+          PYTHON_INTERPRETER: python3
         Windows_Python36:
           PYTHON_VERSION_SPEC: 3.6
           IMAGE: 'windows-2019'
@@ -280,6 +294,10 @@ stages:
           PYTHON_VERSION_SPEC: 3.9
           IMAGE: 'windows-2019'
           PYTHON_INTERPRETER: python
+        Windows_Python310:
+          PYTHON_VERSION_SPEC: 3.10
+          IMAGE: 'windows-2019'
+          PYTHON_INTERPRETER: python
         Mac_Python36:
           PYTHON_VERSION_SPEC: 3.6
           IMAGE: 'macOS-11'
@@ -296,6 +314,10 @@ stages:
           PYTHON_VERSION_SPEC: 3.9
           IMAGE: 'macOS-11'
           PYTHON_INTERPRETER: python3
+        Mac_Python310:
+          PYTHON_VERSION_SPEC: 3.10
+          IMAGE: 'macOS-11'
+          PYTHON_INTERPRETER: python3
     timeoutInMinutes: 10
     pool:
       vmImage: '$(IMAGE)'

build_scripts/pypi/docker/Dockerfile

@@ -4,4 +4,13 @@ ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US:en
 
 WORKDIR /opt/USD
+
+# XXX:
+# The above manylinux2014 image contains CMake 3.20, but we require
+# 3.24+ for Python 3.10 support. Newer images include later cmake
+# versions but for some reason (possibly the use of gcc 10?) wheels
+# created from these images crash in TBB. So for now, we use this
+# older image but install a newer CMake.
+RUN pipx install --force cmake==3.24.3
+
 CMD bash

build_scripts/pypi/package_files/setup.py

@@ -151,5 +151,5 @@ def windows():
         "Environment :: Console",
         "Topic :: Multimedia :: Graphics",
     ],
-    python_requires='>=3.6, <3.10',
+    python_requires='>=3.6, <3.11',
 )