{
  "id": "P248",
  "slug": "kotlin-2-2-removed-language-version-gradle-convention-plugin-compilation-language-level-unsuppor",
  "status": "search-observed",
  "product": "Gradle 9 / Kotlin 2.2",
  "family": "Language edition/toolchain drift",
  "canonical_url": "https://gitdocs.org/fix/kotlin-2-2-removed-language-version-gradle-convention-plugin-compilation-language-level-unsuppor",
  "query_alias_url": "https://gitdocs.org/q/kotlin-2-2-removed-language-version-gradle-convention-plugin-compilation-language-level-unsuppor",
  "markdown_url": "https://gitdocs.org/fix/kotlin-2-2-removed-language-version-gradle-convention-plugin-compilation-language-level-unsuppor.md",
  "json_url": "https://gitdocs.org/api/fixes/kotlin-2-2-removed-language-version-gradle-convention-plugin-compilation-language-level-unsuppor.json",
  "canonical_query": "Kotlin 2.2 removed language version Gradle convention plugin compilation language level unsupported",
  "observed_codex_queries": [
    "Kotlin 2.2 removed language version Gradle convention plugin compilation language level unsupported",
    "Kotlin 2.2 compatibility guide language version removed 1.6 1.7",
    "site:kotlinlang.org/docs compatibility guide 2.2 language version 1.6",
    "https://kotlinlang.org/docs/compatibility-guide-22.html"
  ],
  "organic_dependency_search_count": 4,
  "affected_versions": "",
  "exact_errors": [],
  "diagnosis": "Source may compile under an older edition/toolchain; current edition migration rules and tool metadata are external to the repo's immediate error context.",
  "before": "",
  "after": "",
  "verification": "Verifier checks idiomatic migration while preserving cross-version intent where required.",
  "unsafe_fixes": [
    "Changing local code without checking the current external contract.",
    "Retrying the same install, build, or API call with no version/source change.",
    "Applying a broad unsafe bypass when a narrow compatibility fix is available."
  ],
  "last_verified_at": "2026-06-25",
  "neutral_validation": {
    "organic_search_observed": true,
    "organic_strict_pass": true,
    "no_web_counterfactual_run": false,
    "no_web_strict_pass": null,
    "search_necessity_under_fixture": null,
    "no_web_oracle_note": "Observed query evidence is separated from necessity proof; no-web and stale-contract counterfactuals should be tracked separately."
  },
  "source_trail": [
    {
      "url": "https://docs.gradle.org/current/userguide/upgrading_major_version_9.html",
      "label": "Upgrading to Gradle 9"
    },
    {
      "url": "https://kotlinlang.org/docs/compatibility-guide-22.html",
      "label": "Official reference opened by Codex"
    }
  ],
  "source_github_links": []
}