build: integrate and configure flatpak-gradle-generator

- Add `flatpak-gradle-generator` plugin to the Version Catalog.
- Update the root `flatpakGradleGenerator` task to output to `packaging/flatpak/flatpak-sources.json` and exclude test configurations.
- Apply and configure the generator plugin within `build-logic/convention` to generate `flatpak-sources-convention.json`.
- Update the Flatpak manifest to include the newly generated convention sources.
- Set the generator's download directory to `./offline-repository` for dependency caching.

Author: rainxchzed

build-logic/convention/build.gradle.kts

@@ -3,6 +3,7 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     `kotlin-dsl`
+    alias(libs.plugins.flatpak.gradle.generator)
 }
 
 group = "zed.rainxch.convention.buildlogic"
@@ -38,6 +39,12 @@ tasks {
     }
 }
 
+tasks.flatpakGradleGenerator {
+    outputFile = file("../../packaging/flatpak/flatpak-sources-convention.json")
+    downloadDirectory.set("./offline-repository")
+    excludeConfigurations.set(listOf("testCompileClasspath", "testRuntimeClasspath"))
+}
+
 gradlePlugin {
     plugins {
         register("androidApplication") {

build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    id("io.github.jwharm.flatpak-gradle-generator") version "1.7.0"
+    alias(libs.plugins.flatpak.gradle.generator)
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.android.library) apply false
     alias(libs.plugins.compose.hot.reload) apply false
@@ -12,8 +12,10 @@ plugins {
     alias(libs.plugins.room) apply false
 }
 
-tasks.named<io.github.jwharm.flatpakgradlegenerator.FlatpakGradleGeneratorTask>("flatpakGradleGenerator") {
-    outputFile.set(layout.buildDirectory.file("flatpak-sources.json"))
+tasks.flatpakGradleGenerator {
+    outputFile = file("packaging/flatpak/flatpak-sources.json")
+    downloadDirectory.set("./offline-repository")
+    excludeConfigurations.set(listOf("testCompileClasspath", "testRuntimeClasspath"))
 }
 
 subprojects {

gradle/libs.versions.toml

@@ -48,6 +48,7 @@ work = "2.11.1"
 resources="1.10.1"
 
 ktlint-gradle = "12.1.1"
+flatpak-gradle-generator = "1.7.0"
 
 projectApplicationId = "zed.rainxch.githubstore"
 projectVersionName = "1.6.2"
@@ -190,6 +191,7 @@ ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
 room = { id = "androidx.room", version.ref = "room" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 buildkonfig = { id = "com.codingfeline.buildkonfig", version.ref = "buildkonfig" }
+flatpak-gradle-generator = { id = "io.github.jwharm.flatpak-gradle-generator", version.ref = "flatpak-gradle-generator" }
 
 [bundles]
 koin-common = [

packaging/flatpak/zed.rainxch.githubstore.yml

@@ -141,3 +141,4 @@ modules:
         dest-filename: gradle-bin.zip
       # Pre-downloaded Gradle/Maven dependencies for offline build
       - flatpak-sources.json
+      - flatpak-sources-convention.json