Update dependency dev.zacsweers.metro:dev.zacsweers.metro.gradle.plugin to v1.2.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
dev.zacsweers.metro:dev.zacsweers.metro.gradle.plugin	1.2.0 → 1.2.1

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Release Notes

ZacSweers/metro (dev.zacsweers.metro:dev.zacsweers.metro.gradle.plugin)

v1.2.1

Compare Source

2026-06-11

New

• [IR] Add support for generating metadata-visible classes entirely in IR, allowing Metro to move much of its current FIR code gen entirely to IR.
  • This is enabled by default (and only possible) on Kotlin 2.4.20-dev-6138 or newer and can be configured via the generateClassesInIr option. Do not try to enable this on older versions, your builds will fail and you will be sad.

Fixes

• [FIR] Fix supertype merging not accounting for replaces coming from binding container contributions.

Changes

• Test Kotlin 2.4.20-dev-6138.
• Test IntelliJ 2026.2 EAPs.

Contributors

Special thanks to the following contributors for contributing to this release!

• @​hossain-khan
• @​kevinguitar

Consider sponsoring Metro's development

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