[repo] Start using version catalog in the main build

build.gradle.kts

@@ -14,15 +14,11 @@ buildscript {
         classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:${kotlinBuildProperties.buildGradlePluginVersion}")
     }
 
-    val versionPropertiesFile = project.rootProject.projectDir.resolve("gradle/versions.properties")
-    val versionProperties = java.util.Properties()
-    versionPropertiesFile.inputStream().use { propInput ->
-        versionProperties.load(propInput)
-    }
+    val gsonVersion = libs.versions.gson.get()
     configurations.all {
         resolutionStrategy.eachDependency {
             if (requested.group == "com.google.code.gson" && requested.name == "gson") {
-                useVersion(versionProperties["versions.gson"] as String)
+                useVersion(gsonVersion)
                 because("Force using same gson version because of https://github.com/google/gson/pull/1991")
             }
         }

gradle/libs.versions.toml

@@ -14,6 +14,7 @@ ktor = "2.0.2" # should be in sync with versions.properties
 kotlinx-metadataJvm = "0.6.2"
 # Forcing gson version because of https://github.com/google/gson/pull/1991
 gson = { strictly = "2.8.9" } # should be in sync with version.properties
+jetbrains-ideaExt = "1.0.1"
 
 [libraries]
 dexMemberList = { module = "com.jakewharton.dex:dex-member-list", version.ref = "dexMemberList" }
@@ -30,3 +31,7 @@ proguard-gradlePlugin = { module = "net.sf.proguard:proguard-gradle", version.re
 ktor-client-core = { module = "io.ktor:ktor-client-core", version.ref = "ktor" }
 ktor-client-cio = { module = "io.ktor:ktor-client-cio", version.ref = "ktor" }
 gson = { module = "com.google.code.gson:gson", version.ref = "gson" }
+jetbrains-ideaExt-gradlePlugin = { module = "gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext", version.ref = "jetbrains-ideaExt" }
+
+[plugins]
+jetbrains-ideaExt = { id = "org.jetbrains.gradle.plugin.idea-ext", version.ref = "jetbrains-ideaExt" }

repo/gradle-build-conventions/buildsrc-compat/build.gradle.kts

@@ -80,8 +80,7 @@ dependencies {
     }
     implementation(libs.proguard.gradlePlugin)
 
-    // Version should be in sync with <root>/build.gradle.kts
-    implementation("gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext:1.0.1")
+    implementation(libs.jetbrains.ideaExt.gradlePlugin)
 
     implementation(libs.ktor.client.core)
     implementation(libs.ktor.client.cio)