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Beta release of moon v2 now available!

website/blog/2026-01-13_moon-v2-beta.mdx

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About two weeks ago we announced the alpha release of moon v2, and today we are excited to share that the beta is now available! With the beta, we've made significant progress towards stabilizing the new architecture and features introduced in v2.

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How to use

You can install the beta with proto (>= 0.54.1), or download it directly from the GitHub release page.

shell
$ proto install moon 2.0.0-beta.1

Alternatively, you can try using the new experimental shell install scripts. Be warned that these haven't been tested thoroughly yet!

shell
# Unix
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/moonrepo/moon/releases/download/v2.0.0-beta.0/moon_cli-installer.sh | sh

# Windows
powershell -ExecutionPolicy Bypass -c "irm https://github.com/moonrepo/moon/releases/download/v2.0.0-beta.0/moon_cli-installer.ps1 | iex"

What's changed since alpha?

We've been hard at work the past few weeks working on the following:

  • The @moonrepo npm packages have been updated (and published) to support v2. Additionally, they are now published using OIDC tokens for improved security, and now support provenance.
  • The official shell install scripts have been updated to support v2, but "latest" does not point to v2 yet. This means that the moonrepo/setup-toolchain GitHub Action can now point to v2.
  • Updated the task command and args settings with a new parser that better handles shell syntax, preserves quoting, and much more. We've also made a breaking change where these settings now only allow simple commands, and script should be used for compound commands (pipes, redirects, etc).
  • Updated the task envFile option to support token/var expansion.
  • Handful of bug fixes and performance improvements.

What's still in progress?

There are still some features and improvements that are not yet complete. Here are some of the things we are still working on:

  • Rewriting the Python toolchain as a WASM plugin. Because this is incomplete, Python is currently not supported in the v2 alpha.
  • Auditing open issues and PRs to see what else needs to be done before the stable release.