Using Changesets in a polyglot monorepo

5 hours ago

Monorepos offer advantages for small-to-medium teams, such as enabling atomic changes across the system in a single commit, which reduces compatibility and integration issues.
Changesets is a viable tool for managing versioning in polyglot monorepos, even with its primary focus on JavaScript/TypeScript, by leveraging custom scripts via its GitHub Action for polyglot support.
Setting up changesets involves using proxy package.json files for all packages to handle version bumps, with configuration files like .changeset/config.json to control behavior such as private package tagging.
Automated releases can be implemented using a GitHub workflow that calls custom scripts (e.g., just version) to sync versions from package.json to native manifests (e.g., Cargo.toml, pyproject.toml) for different programming languages.
Instead of relying on on.push.tags triggers, which can be unreliable in GitHub, use workflow_call to react to package tags for building artifacts like Docker images, ensuring consistent and reliable automation.

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