What problem does it solve? Gradle build failures are hard to debug because errors cascade, version compatibility between AGP, Kotlin, Compose Compiler, and KSP is fragile, and slow builds have many possible causes. This Skill provides a structured diagnostic process that classifies the real error and applies the correct fix without trial-and-error. ## Core Features & Use Cases - Error classification: Maps symptoms like dependency resolution failures, plugin incompatibility, configuration-cache violations, and duplicate classes to root-cause categories. - Version compatibility guidance: Covers the coupled upgrade matrix of AGP, Kotlin, Compose Compiler, and KSP, plus version catalog (libs.versions.toml) pitfalls. - Build performance tuning: Ordered steps for configuration cache, parallel execution, build caching, heap sizing, build scans, and KAPT-to-KSP migration. - Use Case: Your CI build passes but local fails with a configuration-cache error. The Skill walks you through reproducing with --stacktrace, identifying the first real error, converting task code to Provider/Property APIs, and verifying with a clean build. ## Quick Start Diagnose why my Gradle build fails with a configuration cache violation and tell me how to fix it.