3.0.0 (2024-02-08)

Source | Diff

This release marks a big turning point for rez by completely dropping support for Python 2.
In 2.114.0, it was still possible to install rez with Python 2 using pip. This functionality has
now been removed. As of now, rez will support Python 3.7+. As of now, we test against 3.7, 3.8, 3.9,
3.10 and 3.11.

This was a tough decision to make considering that we still have users relying on Python 2, but
it was becoming more and more complicated and time-consuming to maintain support for Python 2.

Thank you to everyone who's put a lot of effort into supporting Python 2 for that long. Without
you, it wouldn't have been possible.

As part of the effort to remove support for Python 2, we also refreshed our CI a bit:

• The GitHub Action workflows are now simplified and unified. We now have one workflow to
  run all tests for all platforms instead of four.
• We also got rid of the Windows containers. With these changes, our Windows tests are now
  as fast as Linux and macOS tests, it's easier to see test results and we can also more
  easily test all support python versions.
• Running the tests directly on the GH hosted runners instead of containers,
  we discovered some big flaws in how our tests were set up. These issues are now
  fixed and our tests are now much more portable and don't rely on a centrally installed
  Python or PATHEXT to be set. Big thanks to @Dennis-Lehmann
  and @MrLixm for helping us with debugging our Window tests!

The CI refresh is not user-facing, but it took us a significant amount of effort
and time to do and we hope that it will help increase the quality of rez and make
for a better contributor experience. This is why we mention these in the release notes.

Features

• It is now possible to configure the execution policy used when starting PowerShell (and pwsh) shells
  by setting the execution_policy setting in the shell's config file. This should hopefully help to
  smooth the transition from the cmd shell to powershell/pwsh. #1505 (@herronelou)
• Built-in bind modules can now be overridden by adding your custom implementations to bind_module_path. #1557 (@Pantsworth)

Fixes

• Fix infinite loop in the dot graph generation when --fail-graph is used and there are indirect cycles. #1620 (@Pantsworth)

Removed

As communicated in the 2.114.0 release notes, we've followed through on the removal of certain things.

• Python 2: It is now impossible to install and use rez with Python 2.

• Modules

  • rez.vendor.version: Use rez.version instead.
  • rez.build_process_: Use rez.build_process instead.
  • rez.package_maker__: Use rez.package_maker instead.
  • rez.package_resources_: Use rez.package_resources instead.
  • rez.packages_: Use rez.packages instead.

• Configuration settings

  • rxt_as_yaml: No replacement.
  • warn_commands2: No replacement. This was a no-op.
  • error_commands2: No replacement. This was a no-op.
  • rez_1_cmake_variables: You can use the REZ_BUILD_TYPE CMake variable instead of CENTRAL.

• CLI

  • rez-pip: The --pip-version is removed.
  • rez-search: The --sort is removed.

• API

  • The isolate keyword argument of the rez.rex.RexExecutor.execute_code method is now officially removed.
    Instead of executor.execute_code(..., isolate=True), use

    with executor.reset_globals():
        executor.execute_code(...)

• Build system:

  • CMAKE_ECLIPSE_GENERATE_SOURCE_PROJECT and _ECLIPSE_VERSION were removed from the list of default variables passed to CMake. #1623 (@JeanChristopheMorinPerso)
  • rez will no longer print a custom error message if no build system is detected or set and an old "bez" rezbuild.py is detected. #1624 (@JeanChristopheMorinPerso)

Changed

Change of default values as announced in 2.114.0:

• rez_1_environment_variables: Now disabled by default.
• disable_rez_1_compatibility: Now enabled by default.

New unannounced changes:

• The default shell on Windows is now PowerShell unless you configure default_shell
  to a different value. The previous default was cmd and was causing a lot of problems.

Docs

The effort to improve and add content to our docs continues.

• New documentation dedicated to caching.
  This is only the beginning and only contains information on package payload caching and
  memcached. We hope to add more content in the future. #1615 (@brycegbrazen)

• The note about SemVer in the docs
  has been clarified. While we encourage SemVer like versioning, rez doesn't know
  what SemVer is. This has been a source of confusion in the past. #1614 (@brycegbrazen)