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name remove-platform-version
description Remove support for an older IntelliJ Platform / Android Studio version from the project and clean up obsolete code, baselines, and CI configurations.

Skill: Remove Platform Version Support

You are tasked with removing support for an older IntelliJ Platform or Android Studio version (e.g., dropping support for 2025.1 / build 251 and raising the lower bound to 2025.2 / build 252).

Objective

Systematically update compatibility ranges, clean up CI verification loops and baseline files, identify and remove obsolete compatibility code or TODOs, check repository issues, and update documentation.

Workflow Instructions

1. Establish Baseline & Identify Target Version

  • Identify the build number being removed (e.g., 251 for 2025.1) and the new lower bound (e.g., 252 for 2025.2).
  • Run ./gradlew testClasses to ensure the project compiles before making changes.

2. Update Compatibility Lower Bound (gradle.properties)

  • Open gradle.properties.
  • Update sinceBuild=<version> to the new lower bound build number (e.g., change sinceBuild=251 to sinceBuild=252).

3. Update CI Verification Script (tool/github.sh)

  • Open tool/github.sh.
  • Locate the VERIFY_BOT verification loop (for version in ...; do).
  • Remove the dropped version number from the list so that ./gradlew verifyPlugin is only run against active versions in the compatibility range.

4. Remove Obsolete Verifier Baseline (tool/baseline/)

  • Check tool/baseline/<version>/ for the removed version directory.
  • Remove the directory and baseline file (e.g., using git rm -r tool/baseline/<version>) so baseline update scripts (tool/update_baselines.sh) do not attempt to verify unsupported versions.

5. Search & Remove Obsolete Code and TODOs

  • Search Codebase: Grep src/ for references to the removed build number or version string (e.g., 251, 2025.1).
  • Check Version Checks: Look for version-specific branches or workarounds (such as in DartPluginVersion.java or UI compatibility shims) that check for the removed version and simplify or remove dead code paths.
  • Check TODOs: Look for comments like TODO: remove when dropping support for <version> or similar workarounds that can now be cleaned up.

6. Search Repository Issues

  • Search repository issues (via GitHub issue search or issue tracker) for issues related to dropping or moving off the removed version (e.g., repo:flutter/flutter-intellij <version> or platform compatibility issues).
  • Check if any open issues or tracked technical debt items specify code deletions or cleanup steps upon dropping support for that version, and implement any applicable cleanups.

7. Update Changelog

  • CHANGELOG.md: Under the ### Removed section, add an entry documenting the removal (e.g., - Support for platform version 2025.1.).
  • Note: Do not modify docs/building.md. Its version examples are illustrative and should not be updated when removing a platform version.

8. Verify & Validate

  • Run ./gradlew testClasses to verify compilation.
  • Run ./gradlew test to verify unit tests pass.
  • Run ./gradlew verifyPlugin to verify that plugin verification succeeds against the new compatibility range.