build: Use Gradle version catalog

This change adds support for the Gradle version catalog feature in our
build configuration. This allows us to have a single file,
gradle/libs.versions.toml, which contains all the dependency versions
used in this project.

26 files changed, 102 insertions, 76 deletions

diff --git a/buildSrc/build.gradle.kts b/buildSrc/build.gradle.kts
index 73c4fdf8..3b793a61 100644
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@@ -28,12 +28,8 @@ plugins {
 
 /* Project configuration */
 repositories {
+    mavenCentral()
     gradlePluginPortal()
-    maven("https://maven.pkg.jetbrains.space/public/p/kotlinx-html/maven") {
-        content {
-            includeGroup("org.jetbrains.kotlinx")
-        }
-    }
 }
 
 dependencies {
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
new file mode 100644
index 00000000..79237cd1
--- /dev/null
+++ b/gradle/libs.versions.toml
@@ -0,0 +1,45 @@
+[versions]
+junit-jupiter = "5.7.1"
+junit-platform = "1.7.1"
+slf4j = "1.7.30"
+log4j = "2.14.1"
+opentelemetry-main = "1.1.0"
+opentelemetry-metrics = "1.1.0-alpha"
+
+[libraries]
+kotlinx-coroutines = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version = "1.4.3" }
+
+# Logging
+kotlin-logging = { module = "io.github.microutils:kotlin-logging", version = "2.0.6" }
+slf4j-simple = { module = "org.slf4j:slf4j-simple", version.ref = "slf4j" }
+log4j-slf4j = { module = "org.apache.logging.log4j:log4j-slf4j-impl", version.ref = "log4j" }
+sentry-log4j2 = { module = "io.sentry:sentry-log4j2", version = "4.3.0" }
+
+# Telemetry
+opentelemetry-api-main = { module = "io.opentelemetry:opentelemetry-api", version.ref = "opentelemetry-main" }
+opentelemetry-sdk-main = { module = "io.opentelemetry:opentelemetry-sdk", version.ref = "opentelemetry-main" }
+opentelemetry-api-metrics = { module = "io.opentelemetry:opentelemetry-api-metrics", version.ref = "opentelemetry-metrics" }
+opentelemetry-sdk-metrics = { module = "io.opentelemetry:opentelemetry-sdk-metrics", version.ref = "opentelemetry-metrics" }
+
+# Testing
+junit-jupiter-api = { module = "org.junit.jupiter:junit-jupiter-api", version.ref = "junit-jupiter" }
+junit-jupiter-engine = { module = "org.junit.jupiter:junit-jupiter-engine", version.ref = "junit-jupiter" }
+junit-jupiter-params = { module = "org.junit.jupiter:junit-jupiter-params", version.ref = "junit-jupiter" }
+junit-platform-commons = { module = "org.junit.platform:junit-platform-commons", version.ref = "junit-platform" }
+junit-platform-engine = { module = "org.junit.platform:junit-platform-engine", version.ref = "junit-platform" }
+mockk = { module = "io.mockk:mockk", version = "1.11.0" }
+
+# CLI
+clikt = { module = "com.github.ajalt.clikt:clikt", version = "3.1.0" }
+progressbar = { module = "me.tongfei:progressbar", version = "0.9.0" }
+
+# Format
+jackson-module-kotlin = { module = "com.fasterxml.jackson.module:jackson-module-kotlin", version = "2.12.0" }
+parquet = { module = "org.apache.parquet:parquet-avro", version = "1.12.0" }
+yaml = { module = "org.yaml:snakeyaml", version = "1.28" }
+config = { module = "com.typesafe:config", version = "1.4.1" }
+
+# Other
+mongodb = { module = "org.mongodb:mongodb-driver-sync", version = "4.2.3" }
+classgraph = { module = "io.github.classgraph:classgraph", version = "4.8.105" }
+hadoop-client = { module = "org.apache.hadoop:hadoop-client", version = "3.2.1" }
diff --git a/opendc-compute/opendc-compute-service/build.gradle.kts b/opendc-compute/opendc-compute-service/build.gradle.kts
index 4e1be97a..e0e48b0f 100644
--- a/opendc-compute/opendc-compute-service/build.gradle.kts
+++ b/opendc-compute/opendc-compute-service/build.gradle.kts
@@ -34,8 +34,8 @@ dependencies {
     api(projects.opendcCompute.opendcComputeApi)
     api(projects.opendcTelemetry.opendcTelemetryApi)
     implementation(projects.opendcUtils)
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
-    testRuntimeOnly("org.apache.logging.log4j:log4j-slf4j-impl")
+    testRuntimeOnly(libs.log4j.slf4j)
 }
diff --git a/opendc-compute/opendc-compute-simulator/build.gradle.kts b/opendc-compute/opendc-compute-simulator/build.gradle.kts
index 0d0a57ad..b31a2114 100644
--- a/opendc-compute/opendc-compute-simulator/build.gradle.kts
+++ b/opendc-compute/opendc-compute-simulator/build.gradle.kts
@@ -35,9 +35,9 @@ dependencies {
     api(projects.opendcSimulator.opendcSimulatorCompute)
     api(projects.opendcSimulator.opendcSimulatorFailures)
     implementation(projects.opendcUtils)
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
     testImplementation(projects.opendcTelemetry.opendcTelemetrySdk)
-    testRuntimeOnly("org.slf4j:slf4j-simple:${versions.slf4j}")
+    testRuntimeOnly(libs.slf4j.simple)
 }
diff --git a/opendc-experiments/opendc-experiments-capelin/build.gradle.kts b/opendc-experiments/opendc-experiments-capelin/build.gradle.kts
index ca4aa35f..7c7f0dad 100644
--- a/opendc-experiments/opendc-experiments-capelin/build.gradle.kts
+++ b/opendc-experiments/opendc-experiments-capelin/build.gradle.kts
@@ -36,17 +36,16 @@ dependencies {
     implementation(projects.opendcSimulator.opendcSimulatorCompute)
     implementation(projects.opendcSimulator.opendcSimulatorFailures)
     implementation(projects.opendcCompute.opendcComputeSimulator)
+    implementation(projects.opendcTelemetry.opendcTelemetrySdk)
 
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("com.typesafe:config")
-    implementation("me.tongfei:progressbar:${versions["progressbar"]}")
-    implementation("com.github.ajalt.clikt:clikt:${versions["clikt"]}")
+    implementation(libs.kotlin.logging)
+    implementation(libs.config)
+    implementation(libs.progressbar)
+    implementation(libs.clikt)
 
-    implementation("org.apache.parquet:parquet-avro:${versions["parquet-avro"]}")
-    implementation("org.apache.hadoop:hadoop-client:${versions["hadoop-client"]}") {
+    implementation(libs.parquet)
+    implementation(libs.hadoop.client) {
         exclude(group = "org.slf4j", module = "slf4j-log4j12")
         exclude(group = "log4j")
     }
-
-    implementation(projects.opendcTelemetry.opendcTelemetrySdk)
 }
diff --git a/opendc-experiments/opendc-experiments-energy21/build.gradle.kts b/opendc-experiments/opendc-experiments-energy21/build.gradle.kts
index 64e52f88..bc05f09b 100644
--- a/opendc-experiments/opendc-experiments-energy21/build.gradle.kts
+++ b/opendc-experiments/opendc-experiments-energy21/build.gradle.kts
@@ -38,11 +38,10 @@ dependencies {
     implementation(projects.opendcCompute.opendcComputeSimulator)
     implementation(projects.opendcExperiments.opendcExperimentsCapelin)
     implementation(projects.opendcTelemetry.opendcTelemetrySdk)
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("com.typesafe:config")
+    implementation(libs.kotlin.logging)
+    implementation(libs.config)
 
-    implementation("org.apache.parquet:parquet-avro:${versions["parquet-avro"]}")
-    implementation("org.apache.hadoop:hadoop-client:${versions["hadoop-client"]}") {
+    implementation(libs.parquet) {
         exclude(group = "org.slf4j", module = "slf4j-log4j12")
         exclude(group = "log4j")
     }
diff --git a/opendc-experiments/opendc-experiments-serverless20/build.gradle.kts b/opendc-experiments/opendc-experiments-serverless20/build.gradle.kts
index c35070fe..bdb0d098 100644
--- a/opendc-experiments/opendc-experiments-serverless20/build.gradle.kts
+++ b/opendc-experiments/opendc-experiments-serverless20/build.gradle.kts
@@ -35,11 +35,10 @@ dependencies {
     implementation(projects.opendcServerless.opendcServerlessService)
     implementation(projects.opendcServerless.opendcServerlessSimulator)
     implementation(projects.opendcTelemetry.opendcTelemetrySdk)
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("com.typesafe:config")
+    implementation(libs.kotlin.logging)
+    implementation(libs.config)
 
-    implementation("org.apache.parquet:parquet-avro:${versions["parquet-avro"]}")
-    implementation("org.apache.hadoop:hadoop-client:${versions["hadoop-client"]}") {
+    implementation(libs.parquet) {
         exclude(group = "org.slf4j", module = "slf4j-log4j12")
         exclude(group = "log4j")
     }
diff --git a/opendc-format/build.gradle.kts b/opendc-format/build.gradle.kts
index cfe849e2..2647c834 100644
--- a/opendc-format/build.gradle.kts
+++ b/opendc-format/build.gradle.kts
@@ -35,10 +35,10 @@ dependencies {
     api(projects.opendcWorkflow.opendcWorkflowApi)
     implementation(projects.opendcSimulator.opendcSimulatorCompute)
     implementation(projects.opendcCompute.opendcComputeSimulator)
-    api("com.fasterxml.jackson.module:jackson-module-kotlin:${versions["jackson-module-kotlin"]}")
+    api(libs.jackson.module.kotlin)
 
-    implementation("org.apache.parquet:parquet-avro:${versions["parquet-avro"]}")
-    implementation("org.apache.hadoop:hadoop-client:${versions["hadoop-client"]}") {
+    implementation(libs.parquet)
+    implementation(libs.hadoop.client) {
         exclude(group = "org.slf4j", module = "slf4j-log4j12")
         exclude(group = "log4j")
     }
diff --git a/opendc-harness/opendc-harness-api/build.gradle.kts b/opendc-harness/opendc-harness-api/build.gradle.kts
index 02adae9a..5c464377 100644
--- a/opendc-harness/opendc-harness-api/build.gradle.kts
+++ b/opendc-harness/opendc-harness-api/build.gradle.kts
@@ -29,7 +29,7 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("org.junit.platform:junit-platform-commons:${versions.junitPlatform}")
+    api(libs.junit.platform.commons)
 
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 }
diff --git a/opendc-harness/opendc-harness-cli/build.gradle.kts b/opendc-harness/opendc-harness-cli/build.gradle.kts
index b1f049de..5d0c0460 100644
--- a/opendc-harness/opendc-harness-cli/build.gradle.kts
+++ b/opendc-harness/opendc-harness-cli/build.gradle.kts
@@ -37,9 +37,9 @@ dependencies {
     api(platform(projects.opendcPlatform))
     api(projects.opendcHarness.opendcHarnessEngine)
 
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("com.github.ajalt.clikt:clikt:${versions["clikt"]}")
-    implementation("me.tongfei:progressbar:${versions["progressbar"]}")
+    implementation(libs.kotlin.logging)
+    implementation(libs.clikt)
+    implementation(libs.progressbar)
 
-    runtimeOnly("org.apache.logging.log4j:log4j-slf4j-impl:${versions.log4j}")
+    runtimeOnly(libs.log4j.slf4j)
 }
diff --git a/opendc-harness/opendc-harness-engine/build.gradle.kts b/opendc-harness/opendc-harness-engine/build.gradle.kts
index 6b59cbed..cbd10f6a 100644
--- a/opendc-harness/opendc-harness-engine/build.gradle.kts
+++ b/opendc-harness/opendc-harness-engine/build.gradle.kts
@@ -32,8 +32,8 @@ plugins {
 dependencies {
     api(platform(projects.opendcPlatform))
     api(projects.opendcHarness.opendcHarnessApi)
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    api(libs.kotlinx.coroutines)
 
-    implementation("io.github.classgraph:classgraph:${versions["classgraph"]}")
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.classgraph)
+    implementation(libs.kotlin.logging)
 }
diff --git a/opendc-harness/opendc-harness-junit5/build.gradle.kts b/opendc-harness/opendc-harness-junit5/build.gradle.kts
index ba0f323f..e63367d3 100644
--- a/opendc-harness/opendc-harness-junit5/build.gradle.kts
+++ b/opendc-harness/opendc-harness-junit5/build.gradle.kts
@@ -31,6 +31,6 @@ dependencies {
     api(platform(projects.opendcPlatform))
     api(projects.opendcHarness.opendcHarnessEngine)
 
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("org.junit.platform:junit-platform-engine:${versions.junitPlatform}")
+    implementation(libs.kotlin.logging)
+    implementation(libs.junit.platform.engine)
 }
diff --git a/opendc-platform/build.gradle.kts b/opendc-platform/build.gradle.kts
index 3fbc144e..35d12434 100644
--- a/opendc-platform/build.gradle.kts
+++ b/opendc-platform/build.gradle.kts
@@ -25,15 +25,3 @@ plugins {
 }
 
 description = "Java platform for the OpenDC project"
-
-dependencies {
-    constraints {
-        api("org.jetbrains.kotlinx:kotlinx-coroutines-core:${versions.kotlinxCoroutines}")
-        api("org.jetbrains.kotlinx:kotlinx-coroutines-test:${versions.kotlinxCoroutines}")
-
-        api("com.typesafe:config:1.4.1")
-        api("io.github.microutils:kotlin-logging:${versions.kotlinLogging}")
-        runtime("org.slf4j:slf4j-simple:${versions.slf4j}")
-        runtime("org.apache.logging.log4j:log4j-slf4j-impl:${versions.log4j}")
-    }
-}
diff --git a/opendc-serverless/opendc-serverless-service/build.gradle.kts b/opendc-serverless/opendc-serverless-service/build.gradle.kts
index 9aae05fc..bce72c72 100644
--- a/opendc-serverless/opendc-serverless-service/build.gradle.kts
+++ b/opendc-serverless/opendc-serverless-service/build.gradle.kts
@@ -34,8 +34,8 @@ dependencies {
     api(projects.opendcServerless.opendcServerlessApi)
     api(projects.opendcTelemetry.opendcTelemetryApi)
     implementation(projects.opendcUtils)
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
-    testRuntimeOnly("org.apache.logging.log4j:log4j-slf4j-impl")
+    testRuntimeOnly(libs.log4j.slf4j)
 }
diff --git a/opendc-serverless/opendc-serverless-simulator/build.gradle.kts b/opendc-serverless/opendc-serverless-simulator/build.gradle.kts
index 08014fce..5e2c522d 100644
--- a/opendc-serverless/opendc-serverless-simulator/build.gradle.kts
+++ b/opendc-serverless/opendc-serverless-simulator/build.gradle.kts
@@ -35,5 +35,5 @@ dependencies {
     api(projects.opendcSimulator.opendcSimulatorCompute)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
-    testRuntimeOnly("org.slf4j:slf4j-simple:${versions.slf4j}")
+    testRuntimeOnly(libs.slf4j.simple)
 }
diff --git a/opendc-simulator/opendc-simulator-compute/build.gradle.kts b/opendc-simulator/opendc-simulator-compute/build.gradle.kts
index a7d396c7..4eb0be33 100644
--- a/opendc-simulator/opendc-simulator-compute/build.gradle.kts
+++ b/opendc-simulator/opendc-simulator-compute/build.gradle.kts
@@ -34,5 +34,5 @@ dependencies {
     api(projects.opendcSimulator.opendcSimulatorResources)
     implementation(projects.opendcSimulator.opendcSimulatorCore)
     implementation(projects.opendcUtils)
-    implementation("org.yaml:snakeyaml:1.28")
+    implementation(libs.yaml)
 }
diff --git a/opendc-simulator/opendc-simulator-core/build.gradle.kts b/opendc-simulator/opendc-simulator-core/build.gradle.kts
index 485bf5a6..6dbf4199 100644
--- a/opendc-simulator/opendc-simulator-core/build.gradle.kts
+++ b/opendc-simulator/opendc-simulator-core/build.gradle.kts
@@ -29,5 +29,5 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    api(libs.kotlinx.coroutines)
 }
diff --git a/opendc-simulator/opendc-simulator-failures/build.gradle.kts b/opendc-simulator/opendc-simulator-failures/build.gradle.kts
index 6c266d23..57cd0a35 100644
--- a/opendc-simulator/opendc-simulator-failures/build.gradle.kts
+++ b/opendc-simulator/opendc-simulator-failures/build.gradle.kts
@@ -28,5 +28,5 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    api(libs.kotlinx.coroutines)
 }
diff --git a/opendc-simulator/opendc-simulator-resources/build.gradle.kts b/opendc-simulator/opendc-simulator-resources/build.gradle.kts
index 08e0bc78..e4ffc3ff 100644
--- a/opendc-simulator/opendc-simulator-resources/build.gradle.kts
+++ b/opendc-simulator/opendc-simulator-resources/build.gradle.kts
@@ -31,7 +31,7 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    api(libs.kotlinx.coroutines)
     implementation(projects.opendcUtils)
 
     jmhImplementation(projects.opendcSimulator.opendcSimulatorCore)
diff --git a/opendc-telemetry/opendc-telemetry-api/build.gradle.kts b/opendc-telemetry/opendc-telemetry-api/build.gradle.kts
index 927e9bc5..c544b7d6 100644
--- a/opendc-telemetry/opendc-telemetry-api/build.gradle.kts
+++ b/opendc-telemetry/opendc-telemetry-api/build.gradle.kts
@@ -29,6 +29,6 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("io.opentelemetry:opentelemetry-api:${versions.otelApi}")
-    api("io.opentelemetry:opentelemetry-api-metrics:${versions.otelApiMetrics}")
+    api(libs.opentelemetry.api.main)
+    api(libs.opentelemetry.api.metrics)
 }
diff --git a/opendc-telemetry/opendc-telemetry-sdk/build.gradle.kts b/opendc-telemetry/opendc-telemetry-sdk/build.gradle.kts
index b845c1c9..3b918775 100644
--- a/opendc-telemetry/opendc-telemetry-sdk/build.gradle.kts
+++ b/opendc-telemetry/opendc-telemetry-sdk/build.gradle.kts
@@ -30,9 +30,9 @@ plugins {
 dependencies {
     api(platform(projects.opendcPlatform))
     api(projects.opendcTelemetry.opendcTelemetryApi)
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
-    api("io.opentelemetry:opentelemetry-sdk:${versions.otelSdk}")
-    api("io.opentelemetry:opentelemetry-sdk-metrics:${versions.otelSdkMetrics}")
+    api(libs.kotlinx.coroutines)
+    api(libs.opentelemetry.sdk.main)
+    api(libs.opentelemetry.sdk.metrics)
 
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 }
diff --git a/opendc-utils/build.gradle.kts b/opendc-utils/build.gradle.kts
index 9f712b89..800b374d 100644
--- a/opendc-utils/build.gradle.kts
+++ b/opendc-utils/build.gradle.kts
@@ -30,7 +30,7 @@ plugins {
 
 dependencies {
     api(platform(projects.opendcPlatform))
-    api("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    api(libs.kotlinx.coroutines)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
 }
diff --git a/opendc-web/opendc-web-runner/build.gradle.kts b/opendc-web/opendc-web-runner/build.gradle.kts
index 60a24b92..b7eb223c 100644
--- a/opendc-web/opendc-web-runner/build.gradle.kts
+++ b/opendc-web/opendc-web-runner/build.gradle.kts
@@ -40,12 +40,11 @@ dependencies {
     implementation(projects.opendcSimulator.opendcSimulatorCore)
     implementation(projects.opendcTelemetry.opendcTelemetrySdk)
 
-    implementation("io.github.microutils:kotlin-logging")
-    implementation("com.github.ajalt.clikt:clikt:${versions["clikt"]}")
-    implementation("com.fasterxml.jackson.module:jackson-module-kotlin:${versions["jackson-module-kotlin"]}")
-    implementation("io.sentry:sentry-log4j2:${versions["sentry-log4j2"]}")
-    implementation("org.mongodb:mongodb-driver-sync:${versions["mongodb-driver-sync"]}")
+    implementation(libs.kotlin.logging)
+    implementation(libs.clikt)
+    implementation(libs.jackson.module.kotlin)
+    implementation(libs.sentry.log4j2)
+    implementation(libs.mongodb)
 
-    runtimeOnly("org.apache.logging.log4j:log4j-slf4j-impl:${versions.log4j}")
-    runtimeOnly("org.apache.logging.log4j:log4j-1.2-api:${versions.log4j}")
+    runtimeOnly(libs.log4j.slf4j)
 }
diff --git a/opendc-workflow/opendc-workflow-api/build.gradle.kts b/opendc-workflow/opendc-workflow-api/build.gradle.kts
index 45657d27..36239d05 100644
--- a/opendc-workflow/opendc-workflow-api/build.gradle.kts
+++ b/opendc-workflow/opendc-workflow-api/build.gradle.kts
@@ -30,5 +30,5 @@ plugins {
 dependencies {
     api(platform(projects.opendcPlatform))
     api(projects.opendcCompute.opendcComputeApi)
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 }
diff --git a/opendc-workflow/opendc-workflow-service/build.gradle.kts b/opendc-workflow/opendc-workflow-service/build.gradle.kts
index 8cc66e4c..5e73222c 100644
--- a/opendc-workflow/opendc-workflow-service/build.gradle.kts
+++ b/opendc-workflow/opendc-workflow-service/build.gradle.kts
@@ -35,12 +35,12 @@ dependencies {
     api(projects.opendcCompute.opendcComputeApi)
     api(projects.opendcTelemetry.opendcTelemetryApi)
     implementation(projects.opendcUtils)
-    implementation("io.github.microutils:kotlin-logging")
+    implementation(libs.kotlin.logging)
 
     testImplementation(projects.opendcSimulator.opendcSimulatorCore)
     testImplementation(projects.opendcCompute.opendcComputeSimulator)
     testImplementation(projects.opendcFormat)
     testImplementation(projects.opendcTelemetry.opendcTelemetrySdk)
-    testImplementation("com.fasterxml.jackson.module:jackson-module-kotlin:${versions["jackson-module-kotlin"]}")
-    testRuntimeOnly("org.apache.logging.log4j:log4j-slf4j-impl")
+    testImplementation(libs.jackson.module.kotlin)
+    testRuntimeOnly(libs.log4j.slf4j)
 }
diff --git a/settings.gradle.kts b/settings.gradle.kts
index 844c98e7..3e6d6087 100644
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@@ -49,4 +49,5 @@ include(":opendc-harness:opendc-harness-cli")
 include(":opendc-harness:opendc-harness-junit5")
 include(":opendc-utils")
 
+enableFeaturePreview("VERSION_CATALOGS")
 enableFeaturePreview("TYPESAFE_PROJECT_ACCESSORS")