tree 11a78f0c6568a637f53a5ce059c2d7e49336045a
parent 8ec26d5cfa7a38a38918c68d60115b591c0794b6
author Jeff Gaston <jeffrygaston@google.com> 1629820434 -0400
committer Jeff Gaston <jeffrygaston@google.com> 1629826304 -0400

Splitting buildSrc into multiple projects

:buildSrc:plugins contains the plugins applied by projects
:buildSrc:private contains implementation

This allows the contents of plugins/ to not be added to the classpath that Gradle uses for evaluating projects, which means that changes to those classes don't necessarily invalidate the UP-TO-DATE status of other tasks applied by other plugins in those projects (most notably compileKotlin)

Bug: 140265324

Test: ./gradlew projects

Test: cd paging && ./gradlew checkApi

Test: Treehugger runs busytown/androidx.sh

Test: # demonstrate that unrelated changes in buildSrc no longer invalidate compileKotlin tasks unnecessarily

      # build kotlin
      ./gradlew :core:core:compileDebugKotlin
      # make some unrelated changes in buildSrc:
      sed -i 's/ignoreCase = true/ignoreCase = false/g' buildSrc/private/src/main/kotlin/androidx/build/ErrorProneConfiguration.kt
      # build kotlin again
      ./gradlew :core:core:compileDebugKotlin
      # see that the tasks were up-to-date

Test: # demonstrate that making a relevant change in buildSrc does invalidate kotlinCompile tasks
      1: # change jvmTarget
         sed -i 's/jvmTarget = "1.8"/jvmTarget = "9"/' buildSrc/impl/src/main/kotlin/androidx/build/AndroidXImplPlugin.kt

      2: # run another build
         ./gradlew :core:core:compileDebugKotlin

      3: # see that this task was out-of-date

Change-Id: I8fb321ca59f9eb0518f730748489a34f376de605