Split out CI jobs and only run them on changes

.gitlab-ci.yml

@@ -55,20 +55,41 @@ workflow:
   after_script:
     - echo "Download debug artifacts from https://gitlab.com/${CI_PROJECT_PATH}/-/jobs"
 
-test_lint_pmd_checkstyle:
+app test:
   <<: *test-template
+  rules:
+    - changes:
+        - .gitlab-ci.yml
+        - build.gradle
+        - app/**/*
   script:
     # index-v1.jar tests need SHA1 support still, TODO use apksig to validate JAR sigs
     - sed -i 's,SHA1 denyAfter 20[0-9][0-9],SHA1 denyAfter 2024,'
-          /usr/lib/jvm/default-java/conf/security/java.security
+      /usr/lib/jvm/default-java/conf/security/java.security
+    - ./gradlew :app:testFullDebugUnitTest
+
+lint_pmd_checkstyle:
+  <<: *test-template
+  stage: lint
+  rules:
+    - changes:
+        - .gitlab-ci.yml
+        - build.gradle
+        - app/**/*
+  script:
     # always report on lint errors to the build log
     - sed -i -e 's,textReport .*,textReport true,' app/build.gradle
     # the tasks "lint", "test", etc don't always include everything
-    - ./gradlew lint pmd checkstyle ktlintCheck testDebugUnitTest testFullDebugUnitTest
+    - ./gradlew lint pmd checkstyle ktlintCheck
 
 tools scripts:
   stage: lint
   image: debian:bullseye-slim
+  rules:
+    - changes:
+        - .gitlab-ci.yml
+        - build.gradle
+        - app/**/*
   script:
     - apt-get update
     - apt-get -qy install --no-install-recommends git python3
@@ -104,14 +125,24 @@ weblate merge conflict:
 
 errorprone:
   extends: .base
-  stage: test
+  stage: lint
+  rules:
+    - changes:
+        - .gitlab-ci.yml
+        - build.gradle
+        - app/**/*
   script:
     - cat config/errorprone.gradle >> app/build.gradle
     - ./gradlew -Dorg.gradle.dependency.verification=lenient assembleDebug
 
 database schema:
-  stage: test
+  stage: lint
   image: debian:bullseye-backports
+  rules:
+    - changes:
+        - .gitlab-ci.yml
+        - build.gradle
+        - libs/database/**/*
   script:
     - apt-get update
     - apt-get -qy --no-install-recommends install default-jdk-headless git sdkmanager