diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 02e92a7..e7facf0 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -4,6 +4,7 @@ plugins {
     kotlin("jvm")
     kotlin("kapt")
     application
+    idea
 }
 
 dependencies {
@@ -18,6 +19,11 @@ dependencies {
     implementation("com.squareup.moshi:moshi-kotlin:latest.release")
     kapt("com.squareup.moshi:moshi-kotlin-codegen:latest.release")
     implementation("com.squareup.okio:okio:latest.release")
+
+    testRuntimeOnly(kotlin("reflect"))
+    testImplementation("org.spekframework.spek2:spek-dsl-jvm:latest.release")
+    testRuntimeOnly("org.spekframework.spek2:spek-runner-junit5:latest.release")
+    testImplementation("io.strikt:strikt-core:latest.release")
 }
 
 application {
@@ -30,11 +36,19 @@ application {
         .rename("plugin.*\\.jar", "plugin.jar")
 }
 
+sourceSets {
+    test {
+        resources {
+            srcDir("$rootDir/fixtures")
+        }
+    }
+}
+
 tasks {
     (run) {
         dependsOn(installDist)
         doFirst {
-            jvmArgs = listOf("-Dorg.nixos.gradle2nix.share=${installDist.get().destinationDir.resolve("share")}")
+            systemProperties("org.nixos.gradle2nix.share" to installDist.get().destinationDir.resolve("share"))
         }
     }
 
@@ -45,9 +59,28 @@ tasks {
         }
     }
 
+    test {
+        dependsOn(installDist)
+        doFirst {
+            systemProperties("org.nixos.gradle2nix.share" to installDist.get().destinationDir.resolve("share"))
+        }
+        useJUnitPlatform {
+            includeEngines("spek2")
+        }
+        testLogging {
+            events("passed", "skipped", "failed")
+        }
+    }
+
     withType<KotlinCompile> {
         kotlinOptions {
             jvmTarget = "1.8"
         }
     }
+
+    idea {
+        module {
+
+        }
+    }
 }
diff --git a/app/gradle/dependency-locks/testCompileClasspath.lockfile b/app/gradle/dependency-locks/testCompileClasspath.lockfile
index db44383..61b6f15 100644
--- a/app/gradle/dependency-locks/testCompileClasspath.lockfile
+++ b/app/gradle/dependency-locks/testCompileClasspath.lockfile
@@ -1,11 +1,13 @@
 # This is a Gradle generated file for dependency locking.
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
+com.christophsturm:filepeek:0.1.2
 com.github.ajalt:clikt:2.6.0
 com.squareup.moshi:moshi-adapters:1.9.2
 com.squareup.moshi:moshi-kotlin:1.9.2
 com.squareup.moshi:moshi:1.9.2
 com.squareup.okio:okio:2.6.0
+io.strikt:strikt-core:0.25.0
 org.gradle:gradle-tooling-api:6.3
 org.jetbrains.kotlin:kotlin-reflect:1.3.70
 org.jetbrains.kotlin:kotlin-stdlib-common:1.3.70
@@ -13,4 +15,6 @@ org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.70
 org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.70
 org.jetbrains.kotlin:kotlin-stdlib:1.3.70
 org.jetbrains:annotations:13.0
+org.opentest4j:opentest4j:1.2.0
 org.slf4j:slf4j-api:2.0.0-alpha1
+org.spekframework.spek2:spek-dsl-jvm:2.0.10
diff --git a/app/gradle/dependency-locks/testRuntimeClasspath.lockfile b/app/gradle/dependency-locks/testRuntimeClasspath.lockfile
index f243603..182add4 100644
--- a/app/gradle/dependency-locks/testRuntimeClasspath.lockfile
+++ b/app/gradle/dependency-locks/testRuntimeClasspath.lockfile
@@ -1,18 +1,31 @@
 # This is a Gradle generated file for dependency locking.
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
+com.christophsturm:filepeek:0.1.2
 com.github.ajalt:clikt:2.6.0
 com.squareup.moshi:moshi-adapters:1.9.2
 com.squareup.moshi:moshi-kotlin:1.9.2
 com.squareup.moshi:moshi:1.9.2
 com.squareup.okio:okio:2.6.0
+io.github.classgraph:classgraph:4.8.37
+io.strikt:strikt-core:0.25.0
 net.swiftzer.semver:semver:1.1.1
+org.apiguardian:apiguardian-api:1.1.0
 org.gradle:gradle-tooling-api:6.3
-org.jetbrains.kotlin:kotlin-reflect:1.3.70
-org.jetbrains.kotlin:kotlin-stdlib-common:1.3.70
-org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.70
-org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.70
-org.jetbrains.kotlin:kotlin-stdlib:1.3.70
+org.jetbrains.kotlin:kotlin-reflect:1.3.71
+org.jetbrains.kotlin:kotlin-stdlib-common:1.3.71
+org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.71
+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.3.71
+org.jetbrains.kotlin:kotlin-stdlib:1.3.71
+org.jetbrains.kotlinx:kotlinx-coroutines-core-common:1.3.3
+org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5
 org.jetbrains:annotations:13.0
+org.junit.platform:junit-platform-commons:1.6.0
+org.junit.platform:junit-platform-engine:1.6.0
+org.junit:junit-bom:5.6.0
+org.opentest4j:opentest4j:1.2.0
 org.slf4j:slf4j-api:2.0.0-alpha1
 org.slf4j:slf4j-simple:2.0.0-alpha1
+org.spekframework.spek2:spek-dsl-jvm:2.0.10
+org.spekframework.spek2:spek-runner-junit5:2.0.10
+org.spekframework.spek2:spek-runtime-jvm:2.0.10
diff --git a/app/src/main/kotlin/org/nixos/gradle2nix/GradleRunner.kt b/app/src/main/kotlin/org/nixos/gradle2nix/GradleRunner.kt
index 602a7f6..4978ebe 100644
--- a/app/src/main/kotlin/org/nixos/gradle2nix/GradleRunner.kt
+++ b/app/src/main/kotlin/org/nixos/gradle2nix/GradleRunner.kt
@@ -24,7 +24,6 @@ fun ProjectConnection.getBuildModel(config: Config, path: String): DefaultBuild
         if (config.gradleArgs != null) addArguments(config.gradleArgs)
         if (path.isNotEmpty()) addArguments("--project-dir=$path")
         if (!config.quiet) {
-            setColorOutput(true)
             setStandardOutput(System.err)
             setStandardError(System.err)
         }
diff --git a/app/src/main/kotlin/org/nixos/gradle2nix/Main.kt b/app/src/main/kotlin/org/nixos/gradle2nix/Main.kt
index 797b3f6..afe4c1b 100644
--- a/app/src/main/kotlin/org/nixos/gradle2nix/Main.kt
+++ b/app/src/main/kotlin/org/nixos/gradle2nix/Main.kt
@@ -12,7 +12,6 @@ import com.github.ajalt.clikt.parameters.options.default
 import com.github.ajalt.clikt.parameters.options.flag
 import com.github.ajalt.clikt.parameters.options.multiple
 import com.github.ajalt.clikt.parameters.options.option
-import com.github.ajalt.clikt.parameters.options.split
 import com.github.ajalt.clikt.parameters.options.validate
 import com.github.ajalt.clikt.parameters.types.file
 import com.squareup.moshi.Moshi
@@ -55,7 +54,7 @@ class Main : CliktCommand(
     private val includes: List<File> by option("--include", "-i",
         metavar = "DIR",
         help = "Add an additional project to include")
-        .file(exists = true, fileOkay = false, folderOkay = true, readable = true)
+        .file(mustExist = true, canBeFile = false, canBeDir = true, mustBeReadable = true)
         .multiple()
         .validate { files ->
             val failures = files.filterNot { it.isProjectRoot() }
@@ -79,12 +78,12 @@ class Main : CliktCommand(
             }
         }
 
-    private val outDir: File? by option("--out-dir", "-o",
+    val outDir: File? by option("--out-dir", "-o",
         metavar = "DIR",
         help = "Path to write generated files (default: PROJECT-DIR)")
-        .file(fileOkay = false, folderOkay = true)
+        .file(canBeFile = false, canBeDir = true)
 
-    private val envFile: String by option("--env", "-e",
+    val envFile: String by option("--env", "-e",
         metavar = "FILENAME",
         help = "Prefix for environment files (.json and .nix)")
         .default("gradle-env")
@@ -105,8 +104,11 @@ class Main : CliktCommand(
         }
     }
 
+    // Visible for testing
+    lateinit var config: Config
+
     override fun run() {
-        val config = Config(
+        config = Config(
             gradleVersion,
             gradleArgs,
             configurations,
diff --git a/app/src/test/kotlin/org/nixos/gradle2nix/BuildSrcTest.kt b/app/src/test/kotlin/org/nixos/gradle2nix/BuildSrcTest.kt
new file mode 100644
index 0000000..cd82130
--- /dev/null
+++ b/app/src/test/kotlin/org/nixos/gradle2nix/BuildSrcTest.kt
@@ -0,0 +1,19 @@
+package org.nixos.gradle2nix
+
+import org.spekframework.spek2.Spek
+import org.spekframework.spek2.style.specification.describe
+import strikt.api.expectThat
+import strikt.assertions.containsKey
+
+object BuildSrcTest : Spek({
+    fixture("buildsrc/plugin-in-buildsrc/kotlin")
+    val fixture: Fixture by memoized()
+
+    describe("project with plugin in buildSrc") {
+        fixture.run()
+
+        it("should include buildSrc in gradle env", timeout = 0) {
+            expectThat(fixture.env()).containsKey("buildSrc")
+        }
+    }
+})
\ No newline at end of file
diff --git a/app/src/test/kotlin/org/nixos/gradle2nix/TestUtil.kt b/app/src/test/kotlin/org/nixos/gradle2nix/TestUtil.kt
new file mode 100644
index 0000000..d845198
--- /dev/null
+++ b/app/src/test/kotlin/org/nixos/gradle2nix/TestUtil.kt
@@ -0,0 +1,57 @@
+package org.nixos.gradle2nix
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.Types
+import okio.buffer
+import okio.source
+import org.spekframework.spek2.dsl.Root
+import strikt.api.expectThat
+import strikt.assertions.exists
+import strikt.assertions.isNotNull
+import strikt.assertions.toPath
+import java.nio.file.Files
+import java.nio.file.Path
+import java.nio.file.Paths
+
+private val moshi = Moshi.Builder().build()
+
+class Fixture(val project: Path) {
+    private val app = Main()
+
+    fun run(vararg args: String) {
+        app.main(args.toList() + project.toString())
+    }
+
+    fun env(): Map<String, NixGradleEnv> {
+        val file = (app.outDir ?: project.toFile()).resolve("${app.envFile}.json")
+        expectThat(file).toPath().exists()
+        val env = file.source().buffer().use { source ->
+            moshi
+                .adapter<Map<String, NixGradleEnv>>(
+                    Types.newParameterizedType(Map::class.java, String::class.java, NixGradleEnv::class.java)
+                ).fromJson(source)
+        }
+        expectThat(env).isNotNull()
+        return env!!
+    }
+}
+
+fun Root.fixture(name: String) {
+    val fixture by memoized(
+        factory = {
+            val url = checkNotNull(Thread.currentThread().contextClassLoader.getResource(name)?.toURI()) {
+                "$name: No test fixture found"
+            }
+            val fixtureRoot = Paths.get(url)
+            val dest = createTempDir("gradle2nix").toPath()
+            val src = checkNotNull(fixtureRoot.takeIf { Files.exists(it) }) {
+                "$name: Test fixture not found: $fixtureRoot"
+            }
+            src.toFile().copyRecursively(dest.toFile())
+            Fixture(dest)
+        },
+        destructor = {
+            it.project.toFile().deleteRecursively()
+        }
+    )
+}
\ No newline at end of file
diff --git a/default.nix b/default.nix
index 4716a48..d4fd00d 100644
--- a/default.nix
+++ b/default.nix
@@ -5,15 +5,34 @@ with pkgs;
 let
   buildGradle = pkgs.callPackage ./gradle-env.nix {};
 
-in buildGradle {
-  envSpec = ./gradle-env.json;
+  gradle2nix = buildGradle {
+    envSpec = ./gradle-env.json;
 
-  src = ./.;
+    src = lib.cleanSourceWith {
+      filter = lib.cleanSourceFilter;
+      src = lib.cleanSourceWith {
+        filter = path: type: let baseName = baseNameOf path; in !(
+          (type == "directory" && (
+            baseName == "build" ||
+            baseName == ".idea" ||
+            baseName == ".gradle"
+          )) ||
+          (lib.hasSuffix ".iml" baseName)
+        );
+        src = ./.;
+      };
+    };
 
-  gradleFlags = [ "installDist" ];
+    gradleFlags = [ "installDist" ];
 
-  installPhase = ''
-    mkdir -p $out
-    cp -r app/build/install/gradle2nix/* $out/
-  '';
-}
+    installPhase = ''
+      mkdir -p $out
+      cp -r app/build/install/gradle2nix/* $out/
+    '';
+
+    passthru = {
+      plugin = "${gradle2nix}/share/plugin.jar";
+    };
+  };
+
+in gradle2nix
diff --git a/fixtures/buildsrc/plugin-in-buildsrc/kotlin/build.gradle.kts b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/build.gradle.kts
new file mode 100644
index 0000000..62f05d4
--- /dev/null
+++ b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/build.gradle.kts
@@ -0,0 +1,4 @@
+plugins {
+    `java-library`
+    id("com.example.custom-spotless")
+}
\ No newline at end of file
diff --git a/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/build.gradle.kts b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/build.gradle.kts
new file mode 100644
index 0000000..cbd39da
--- /dev/null
+++ b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/build.gradle.kts
@@ -0,0 +1,12 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    jcenter()
+    gradlePluginPortal()
+}
+
+dependencies {
+    implementation("com.diffplug.spotless:spotless-plugin-gradle:3.28.1")
+}
diff --git a/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/settings.gradle.kts b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/settings.gradle.kts
new file mode 100644
index 0000000..e69de29
diff --git a/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/src/main/kotlin/com.example/custom-spotless.gradle.kts b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/src/main/kotlin/com.example/custom-spotless.gradle.kts
new file mode 100644
index 0000000..518ad01
--- /dev/null
+++ b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/buildSrc/src/main/kotlin/com.example/custom-spotless.gradle.kts
@@ -0,0 +1,11 @@
+package com.example
+
+plugins {
+    com.diffplug.gradle.spotless
+}
+
+spotless {
+    kotlin {
+        ktlint()
+    }
+}
\ No newline at end of file
diff --git a/fixtures/buildsrc/plugin-in-buildsrc/kotlin/settings.gradle.kts b/fixtures/buildsrc/plugin-in-buildsrc/kotlin/settings.gradle.kts
new file mode 100644
index 0000000..e69de29
diff --git a/gradle-env.json b/gradle-env.json
index 20b6cd3..4e4932a 100644
--- a/gradle-env.json
+++ b/gradle-env.json
@@ -1725,6 +1725,38 @@
       ],
       "buildscript": [],
       "project": [
+        {
+          "id": {
+            "group": "com.christophsturm",
+            "name": "filepeek",
+            "version": "0.1.2",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "filepeek-0.1.2.jar",
+          "path": "com/christophsturm/filepeek/0.1.2",
+          "urls": [
+            "https://jcenter.bintray.com/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.jar",
+            "https://repo.gradle.org/gradle/libs-releases/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.jar"
+          ],
+          "sha256": "29a5735255bb1f3652a4e2592a2bd8ca754717f8d62eb4a65680c992b98af4b0"
+        },
+        {
+          "id": {
+            "group": "com.christophsturm",
+            "name": "filepeek",
+            "version": "0.1.2",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "filepeek-0.1.2.pom",
+          "path": "com/christophsturm/filepeek/0.1.2",
+          "urls": [
+            "https://jcenter.bintray.com/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.pom",
+            "https://repo.gradle.org/gradle/libs-releases/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.pom"
+          ],
+          "sha256": "a01fcc97303305918b3c8e943bc208c5a0d915b8f8fb9c963cddf27cd89e3e57"
+        },
         {
           "id": {
             "group": "com.github.ajalt",
@@ -2141,6 +2173,70 @@
           ],
           "sha256": "0b7424c3faab3bb5333096e39957f88f8d50ce0c98bfba71a3fcfaa0aaf0552c"
         },
+        {
+          "id": {
+            "group": "io.github.classgraph",
+            "name": "classgraph",
+            "version": "4.8.37",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "classgraph-4.8.37.jar",
+          "path": "io/github/classgraph/classgraph/4.8.37",
+          "urls": [
+            "https://jcenter.bintray.com/io/github/classgraph/classgraph/4.8.37/classgraph-4.8.37.jar",
+            "https://repo.gradle.org/gradle/libs-releases/io/github/classgraph/classgraph/4.8.37/classgraph-4.8.37.jar"
+          ],
+          "sha256": "7d1d3e8828c1eef549d41ef1ece73d2c5c58cfb951b3f220cf0cf1dd25558173"
+        },
+        {
+          "id": {
+            "group": "io.github.classgraph",
+            "name": "classgraph",
+            "version": "4.8.37",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "classgraph-4.8.37.pom",
+          "path": "io/github/classgraph/classgraph/4.8.37",
+          "urls": [
+            "https://jcenter.bintray.com/io/github/classgraph/classgraph/4.8.37/classgraph-4.8.37.pom",
+            "https://repo.gradle.org/gradle/libs-releases/io/github/classgraph/classgraph/4.8.37/classgraph-4.8.37.pom"
+          ],
+          "sha256": "a49055d06125786650be33eed77ae985009138b84d39603bc1eb2ed3c8085b34"
+        },
+        {
+          "id": {
+            "group": "io.strikt",
+            "name": "strikt-core",
+            "version": "0.25.0",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "strikt-core-0.25.0.jar",
+          "path": "io/strikt/strikt-core/0.25.0",
+          "urls": [
+            "https://jcenter.bintray.com/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.jar",
+            "https://repo.gradle.org/gradle/libs-releases/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.jar"
+          ],
+          "sha256": "111235bef112a049f587104a936c57c79ac9295e55f87e448d3de0ce17b57bc5"
+        },
+        {
+          "id": {
+            "group": "io.strikt",
+            "name": "strikt-core",
+            "version": "0.25.0",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "strikt-core-0.25.0.pom",
+          "path": "io/strikt/strikt-core/0.25.0",
+          "urls": [
+            "https://jcenter.bintray.com/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.pom",
+            "https://repo.gradle.org/gradle/libs-releases/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.pom"
+          ],
+          "sha256": "a0f5a066febae2d800e4189df910a8df9fc3917e7293b140ca2a57f5a12b870c"
+        },
         {
           "id": {
             "group": "net.swiftzer.semver",
@@ -2173,6 +2269,38 @@
           ],
           "sha256": "5d65513ed1a37cc927e4261a1c9f198ea4b033dbf88930358c37b61fe63c00e7"
         },
+        {
+          "id": {
+            "group": "org.apiguardian",
+            "name": "apiguardian-api",
+            "version": "1.1.0",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "apiguardian-api-1.1.0.jar",
+          "path": "org/apiguardian/apiguardian-api/1.1.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar"
+          ],
+          "sha256": "a9aae9ff8ae3e17a2a18f79175e82b16267c246fbbd3ca9dfbbb290b08dcfdd4"
+        },
+        {
+          "id": {
+            "group": "org.apiguardian",
+            "name": "apiguardian-api",
+            "version": "1.1.0",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "apiguardian-api-1.1.0.pom",
+          "path": "org/apiguardian/apiguardian-api/1.1.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.pom"
+          ],
+          "sha256": "a945b9cb5cd9b77b2c711844e659c43ec070ef59d9f509fa9f4c1861b4862711"
+        },
         {
           "id": {
             "group": "org.gradle",
@@ -2442,6 +2570,38 @@
           ],
           "sha256": "aacae35e5fbb3544af928861da01011306b25a1f0a1a8845b33db2787df856d5"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-reflect",
+            "version": "1.3.71",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlin-reflect-1.3.71.jar",
+          "path": "org/jetbrains/kotlin/kotlin-reflect/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.jar"
+          ],
+          "sha256": "59c57ab609494d2a30d6ea3737428a56918ff0b8031081ea73b8472fdec06e44"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-reflect",
+            "version": "1.3.71",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlin-reflect-1.3.71.pom",
+          "path": "org/jetbrains/kotlin/kotlin-reflect/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom"
+          ],
+          "sha256": "4df94aaeee8d900be431386e31ef44e82a66e57c3ae30866aec2875aff01fe70"
+        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -2666,6 +2826,38 @@
           ],
           "sha256": "ff410b15c5738c2e0924ab9611ca59585b7dbec316dc7f47a7d46676bfd15048"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib",
+            "version": "1.3.71",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlin-stdlib-1.3.71.jar",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.jar"
+          ],
+          "sha256": "5ace22b102a96425e4ac44e0558b927f3857b56a33cbc289cf1b70aee645e6a7"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib",
+            "version": "1.3.71",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlin-stdlib-1.3.71.pom",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.pom"
+          ],
+          "sha256": "ff03e9989faa2d40fa4a9098aaad71e247f27ea4d24b0754da642eb0924bd8c5"
+        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -2730,6 +2922,38 @@
           ],
           "sha256": "76162bfcaa756897fd3f631019353e13b128df2318cdad5baecb7e7d428a28e3"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-common",
+            "version": "1.3.71",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlin-stdlib-common-1.3.71.jar",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.jar"
+          ],
+          "sha256": "974f8a9b7bfce3d730a86efe0eab219a72621e8530f91e30c89f400ba98092ec"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-common",
+            "version": "1.3.71",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlin-stdlib-common-1.3.71.pom",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.pom"
+          ],
+          "sha256": "93f5cb50148dee7da746ed487e6278ee8d94da9a99b670f9f5248456c2f66341"
+        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -2794,6 +3018,38 @@
           ],
           "sha256": "aa51062db8475e4068be20322cc9002cdb06994a026803d395d0e0502d606a0f"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-jdk7",
+            "version": "1.3.71",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlin-stdlib-jdk7-1.3.71.jar",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.jar"
+          ],
+          "sha256": "b046a5ef54c7006db852e48e547aaff525a9e7a0a5909ffe5fe2c966c1a3a72e"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-jdk7",
+            "version": "1.3.71",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlin-stdlib-jdk7-1.3.71.pom",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.pom"
+          ],
+          "sha256": "7163f88887d050f76f86ad2304f84a9d79c39a96178bf02e4524bdeacc5bb149"
+        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -2826,6 +3082,38 @@
           ],
           "sha256": "559b089df136750907ec2e3eb0838f8f0892eb08d64e877064bffea62f0c467a"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-jdk8",
+            "version": "1.3.71",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlin-stdlib-jdk8-1.3.71.jar",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.jar"
+          ],
+          "sha256": "a22192ac779ba8eff09d07084ae503e8be9e7c8ca1cb2b511ff8af4c68d83d66"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlin",
+            "name": "kotlin-stdlib-jdk8",
+            "version": "1.3.71",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlin-stdlib-jdk8-1.3.71.pom",
+          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom"
+          ],
+          "sha256": "daa4f98393b7196473ac7b347618a244d3c7eaa3554b5f86f9cddcce6a4cded6"
+        },
         {
           "id": {
             "group": "org.jetbrains.kotlinx",
@@ -2858,6 +3146,198 @@
           ],
           "sha256": "6f7523ea8a56d7f12d11a004cfe5a4577bfba3ed6c84cc5ac48b72d54975552c"
         },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlinx",
+            "name": "kotlinx-coroutines-core",
+            "version": "1.3.5",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlinx-coroutines-core-1.3.5.jar",
+          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.jar"
+          ],
+          "sha256": "6d3ddc759cd2094b1495198a8501e22a51c4c3d011ec801f5fc45a2cd25b8f11"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlinx",
+            "name": "kotlinx-coroutines-core",
+            "version": "1.3.5",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlinx-coroutines-core-1.3.5.pom",
+          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.pom"
+          ],
+          "sha256": "f4a306487c17b8cdca8d3e5da50369a2e5ac7c665200516d427726dff5a56f92"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlinx",
+            "name": "kotlinx-coroutines-core-common",
+            "version": "1.3.3",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "kotlinx-coroutines-core-common-1.3.3.jar",
+          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3/kotlinx-coroutines-core-common-1.3.3.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3/kotlinx-coroutines-core-common-1.3.3.jar"
+          ],
+          "sha256": "4152d951dc864ebec0dadc348ebc04344df34d7a1de89d59f12824f702b98d28"
+        },
+        {
+          "id": {
+            "group": "org.jetbrains.kotlinx",
+            "name": "kotlinx-coroutines-core-common",
+            "version": "1.3.3",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "kotlinx-coroutines-core-common-1.3.3.pom",
+          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3",
+          "urls": [
+            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3/kotlinx-coroutines-core-common-1.3.3.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core-common/1.3.3/kotlinx-coroutines-core-common-1.3.3.pom"
+          ],
+          "sha256": "77c8b77af4dca3cf23b0bc9c1ae6196866f5e6a9bfced3345747dac85b76e5fa"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-commons",
+            "version": "1.6.0",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "junit-platform-commons-1.6.0.jar",
+          "path": "org/junit/platform/junit-platform-commons/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.jar"
+          ],
+          "sha256": "18accffaf3f1fe66daf9f13daa7d59b2ac6d06396f816a73b4d733d82d28ace6"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-commons",
+            "version": "1.6.0",
+            "type": "module",
+            "extension": "module"
+          },
+          "name": "junit-platform-commons-1.6.0.module",
+          "path": "org/junit/platform/junit-platform-commons/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.module",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.module"
+          ],
+          "sha256": "16e0f6f7893159b21a156b818f32f0a4fdb909d2bdc850ed0c57582500578b4c"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-commons",
+            "version": "1.6.0",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "junit-platform-commons-1.6.0.pom",
+          "path": "org/junit/platform/junit-platform-commons/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-commons/1.6.0/junit-platform-commons-1.6.0.pom"
+          ],
+          "sha256": "5751484ae2a6f661bba84fa8c2aae7d4912c693fe25eb3e0adff4d93824c0a9c"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-engine",
+            "version": "1.6.0",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "junit-platform-engine-1.6.0.jar",
+          "path": "org/junit/platform/junit-platform-engine/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.jar"
+          ],
+          "sha256": "7aed5424cb31a8255daecb1fcb0c173b0b64b1262e1eb2eaf87bbc7aec5e6d76"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-engine",
+            "version": "1.6.0",
+            "type": "module",
+            "extension": "module"
+          },
+          "name": "junit-platform-engine-1.6.0.module",
+          "path": "org/junit/platform/junit-platform-engine/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.module",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.module"
+          ],
+          "sha256": "9fab5f84f549fa7925289ddfe5b7dd88f30e6086a5df1de07ebf508a2df25741"
+        },
+        {
+          "id": {
+            "group": "org.junit.platform",
+            "name": "junit-platform-engine",
+            "version": "1.6.0",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "junit-platform-engine-1.6.0.pom",
+          "path": "org/junit/platform/junit-platform-engine/1.6.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/junit/platform/junit-platform-engine/1.6.0/junit-platform-engine-1.6.0.pom"
+          ],
+          "sha256": "55ed9236c3415cbe1d7b06e76f45508647ecb94bafedb99c3bf395f0913bf3d6"
+        },
+        {
+          "id": {
+            "group": "org.opentest4j",
+            "name": "opentest4j",
+            "version": "1.2.0",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "opentest4j-1.2.0.jar",
+          "path": "org/opentest4j/opentest4j/1.2.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar"
+          ],
+          "sha256": "58812de60898d976fb81ef3b62da05c6604c18fd4a249f5044282479fc286af2"
+        },
+        {
+          "id": {
+            "group": "org.opentest4j",
+            "name": "opentest4j",
+            "version": "1.2.0",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "opentest4j-1.2.0.pom",
+          "path": "org/opentest4j/opentest4j/1.2.0",
+          "urls": [
+            "https://jcenter.bintray.com/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.pom"
+          ],
+          "sha256": "a96e671816c1ff8803bdec74c9241f025bdfb277da5d2b4ee02266405936f994"
+        },
         {
           "id": {
             "group": "org.slf4j",
@@ -2956,35 +3436,99 @@
         },
         {
           "id": {
-            "group": "com.christophsturm",
-            "name": "filepeek",
-            "version": "0.1.2",
+            "group": "org.spekframework.spek2",
+            "name": "spek-dsl-jvm",
+            "version": "2.0.10",
             "type": "jar",
             "extension": "jar"
           },
-          "name": "filepeek-0.1.2.jar",
-          "path": "com/christophsturm/filepeek/0.1.2",
+          "name": "spek-dsl-jvm-2.0.10.jar",
+          "path": "org/spekframework/spek2/spek-dsl-jvm/2.0.10",
           "urls": [
-            "https://jcenter.bintray.com/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.jar",
-            "https://repo.gradle.org/gradle/libs-releases/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.jar"
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-dsl-jvm/2.0.10/spek-dsl-jvm-2.0.10.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-dsl-jvm/2.0.10/spek-dsl-jvm-2.0.10.jar"
           ],
-          "sha256": "29a5735255bb1f3652a4e2592a2bd8ca754717f8d62eb4a65680c992b98af4b0"
+          "sha256": "3663509e0868d61ad652225369d1733e450bf8df548511a2f3be7dc1aab6219c"
         },
         {
           "id": {
-            "group": "com.christophsturm",
-            "name": "filepeek",
-            "version": "0.1.2",
+            "group": "org.spekframework.spek2",
+            "name": "spek-dsl-jvm",
+            "version": "2.0.10",
             "type": "pom",
             "extension": "pom"
           },
-          "name": "filepeek-0.1.2.pom",
-          "path": "com/christophsturm/filepeek/0.1.2",
+          "name": "spek-dsl-jvm-2.0.10.pom",
+          "path": "org/spekframework/spek2/spek-dsl-jvm/2.0.10",
           "urls": [
-            "https://jcenter.bintray.com/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.pom",
-            "https://repo.gradle.org/gradle/libs-releases/com/christophsturm/filepeek/0.1.2/filepeek-0.1.2.pom"
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-dsl-jvm/2.0.10/spek-dsl-jvm-2.0.10.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-dsl-jvm/2.0.10/spek-dsl-jvm-2.0.10.pom"
           ],
-          "sha256": "a01fcc97303305918b3c8e943bc208c5a0d915b8f8fb9c963cddf27cd89e3e57"
+          "sha256": "a26f77f7078960926e9a67058226b97190d4ad715adaee4d15927c3058fa6e4e"
+        },
+        {
+          "id": {
+            "group": "org.spekframework.spek2",
+            "name": "spek-runner-junit5",
+            "version": "2.0.10",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "spek-runner-junit5-2.0.10.jar",
+          "path": "org/spekframework/spek2/spek-runner-junit5/2.0.10",
+          "urls": [
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-runner-junit5/2.0.10/spek-runner-junit5-2.0.10.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-runner-junit5/2.0.10/spek-runner-junit5-2.0.10.jar"
+          ],
+          "sha256": "3457afe8fb46361e22bd63b699555c1dbe193d32adaa0f87b41d1d91fbd2885e"
+        },
+        {
+          "id": {
+            "group": "org.spekframework.spek2",
+            "name": "spek-runner-junit5",
+            "version": "2.0.10",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "spek-runner-junit5-2.0.10.pom",
+          "path": "org/spekframework/spek2/spek-runner-junit5/2.0.10",
+          "urls": [
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-runner-junit5/2.0.10/spek-runner-junit5-2.0.10.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-runner-junit5/2.0.10/spek-runner-junit5-2.0.10.pom"
+          ],
+          "sha256": "e75ac3b12905c591fa55578f4ed0233505cc63eaa51df1a1d0543626124100f2"
+        },
+        {
+          "id": {
+            "group": "org.spekframework.spek2",
+            "name": "spek-runtime-jvm",
+            "version": "2.0.10",
+            "type": "jar",
+            "extension": "jar"
+          },
+          "name": "spek-runtime-jvm-2.0.10.jar",
+          "path": "org/spekframework/spek2/spek-runtime-jvm/2.0.10",
+          "urls": [
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-runtime-jvm/2.0.10/spek-runtime-jvm-2.0.10.jar",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-runtime-jvm/2.0.10/spek-runtime-jvm-2.0.10.jar"
+          ],
+          "sha256": "fcc8cb3922950bc50af0bb598241b80cb94547dbeb504b2c5c9a58c9d407d9ce"
+        },
+        {
+          "id": {
+            "group": "org.spekframework.spek2",
+            "name": "spek-runtime-jvm",
+            "version": "2.0.10",
+            "type": "pom",
+            "extension": "pom"
+          },
+          "name": "spek-runtime-jvm-2.0.10.pom",
+          "path": "org/spekframework/spek2/spek-runtime-jvm/2.0.10",
+          "urls": [
+            "https://jcenter.bintray.com/org/spekframework/spek2/spek-runtime-jvm/2.0.10/spek-runtime-jvm-2.0.10.pom",
+            "https://repo.gradle.org/gradle/libs-releases/org/spekframework/spek2/spek-runtime-jvm/2.0.10/spek-runtime-jvm-2.0.10.pom"
+          ],
+          "sha256": "405bee7923aec86d53377a44843a12392df3f043357ebd21b551c0145953df7d"
         },
         {
           "id": {
@@ -3050,38 +3594,6 @@
           ],
           "sha256": "75d61da98c46d79a3a548a952bd806020f808c75ccd21958a6c791cfbfa0481e"
         },
-        {
-          "id": {
-            "group": "io.strikt",
-            "name": "strikt-core",
-            "version": "0.25.0",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "strikt-core-0.25.0.jar",
-          "path": "io/strikt/strikt-core/0.25.0",
-          "urls": [
-            "https://jcenter.bintray.com/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.jar",
-            "https://repo.gradle.org/gradle/libs-releases/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.jar"
-          ],
-          "sha256": "111235bef112a049f587104a936c57c79ac9295e55f87e448d3de0ce17b57bc5"
-        },
-        {
-          "id": {
-            "group": "io.strikt",
-            "name": "strikt-core",
-            "version": "0.25.0",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "strikt-core-0.25.0.pom",
-          "path": "io/strikt/strikt-core/0.25.0",
-          "urls": [
-            "https://jcenter.bintray.com/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.pom",
-            "https://repo.gradle.org/gradle/libs-releases/io/strikt/strikt-core/0.25.0/strikt-core-0.25.0.pom"
-          ],
-          "sha256": "a0f5a066febae2d800e4189df910a8df9fc3917e7293b140ca2a57f5a12b870c"
-        },
         {
           "id": {
             "group": "org.apache",
@@ -3210,38 +3722,6 @@
           ],
           "sha256": "5398b22da433ace2c836f76773d8ff48fa53fa09e2e7a1eba65ff922b03c665e"
         },
-        {
-          "id": {
-            "group": "org.apiguardian",
-            "name": "apiguardian-api",
-            "version": "1.1.0",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "apiguardian-api-1.1.0.jar",
-          "path": "org/apiguardian/apiguardian-api/1.1.0",
-          "urls": [
-            "https://jcenter.bintray.com/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar"
-          ],
-          "sha256": "a9aae9ff8ae3e17a2a18f79175e82b16267c246fbbd3ca9dfbbb290b08dcfdd4"
-        },
-        {
-          "id": {
-            "group": "org.apiguardian",
-            "name": "apiguardian-api",
-            "version": "1.1.0",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "apiguardian-api-1.1.0.pom",
-          "path": "org/apiguardian/apiguardian-api/1.1.0",
-          "urls": [
-            "https://jcenter.bintray.com/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.pom"
-          ],
-          "sha256": "a945b9cb5cd9b77b2c711844e659c43ec070ef59d9f509fa9f4c1861b4862711"
-        },
         {
           "id": {
             "group": "org.codehaus.plexus",
@@ -3386,38 +3866,6 @@
           ],
           "sha256": "d884c57025a8ed03cc697effd6427a4410216f3fe09b8da87e27d64501ee960b"
         },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-reflect",
-            "version": "1.3.71",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlin-reflect-1.3.71.jar",
-          "path": "org/jetbrains/kotlin/kotlin-reflect/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.jar"
-          ],
-          "sha256": "59c57ab609494d2a30d6ea3737428a56918ff0b8031081ea73b8472fdec06e44"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-reflect",
-            "version": "1.3.71",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlin-reflect-1.3.71.pom",
-          "path": "org/jetbrains/kotlin/kotlin-reflect/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-reflect/1.3.71/kotlin-reflect-1.3.71.pom"
-          ],
-          "sha256": "4df94aaeee8d900be431386e31ef44e82a66e57c3ae30866aec2875aff01fe70"
-        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -3450,134 +3898,6 @@
           ],
           "sha256": "081f909f3b1803f0e65886a33d318939f82a26da47b001a3453cf104ca7a0fad"
         },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib",
-            "version": "1.3.71",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlin-stdlib-1.3.71.jar",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.jar"
-          ],
-          "sha256": "5ace22b102a96425e4ac44e0558b927f3857b56a33cbc289cf1b70aee645e6a7"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib",
-            "version": "1.3.71",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlin-stdlib-1.3.71.pom",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib/1.3.71/kotlin-stdlib-1.3.71.pom"
-          ],
-          "sha256": "ff03e9989faa2d40fa4a9098aaad71e247f27ea4d24b0754da642eb0924bd8c5"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-common",
-            "version": "1.3.71",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlin-stdlib-common-1.3.71.jar",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.jar"
-          ],
-          "sha256": "974f8a9b7bfce3d730a86efe0eab219a72621e8530f91e30c89f400ba98092ec"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-common",
-            "version": "1.3.71",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlin-stdlib-common-1.3.71.pom",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-common/1.3.71/kotlin-stdlib-common-1.3.71.pom"
-          ],
-          "sha256": "93f5cb50148dee7da746ed487e6278ee8d94da9a99b670f9f5248456c2f66341"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-jdk7",
-            "version": "1.3.71",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlin-stdlib-jdk7-1.3.71.jar",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.jar"
-          ],
-          "sha256": "b046a5ef54c7006db852e48e547aaff525a9e7a0a5909ffe5fe2c966c1a3a72e"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-jdk7",
-            "version": "1.3.71",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlin-stdlib-jdk7-1.3.71.pom",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.3.71/kotlin-stdlib-jdk7-1.3.71.pom"
-          ],
-          "sha256": "7163f88887d050f76f86ad2304f84a9d79c39a96178bf02e4524bdeacc5bb149"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-jdk8",
-            "version": "1.3.71",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlin-stdlib-jdk8-1.3.71.jar",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.jar"
-          ],
-          "sha256": "a22192ac779ba8eff09d07084ae503e8be9e7c8ca1cb2b511ff8af4c68d83d66"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlin",
-            "name": "kotlin-stdlib-jdk8",
-            "version": "1.3.71",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlin-stdlib-jdk8-1.3.71.pom",
-          "path": "org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.3.71/kotlin-stdlib-jdk8-1.3.71.pom"
-          ],
-          "sha256": "daa4f98393b7196473ac7b347618a244d3c7eaa3554b5f86f9cddcce6a4cded6"
-        },
         {
           "id": {
             "group": "org.jetbrains.kotlin",
@@ -3738,38 +4058,6 @@
           ],
           "sha256": "6636d13600e4d19b5866c182111cc83e716556588bf1ef2f6141b8693495fab6"
         },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlinx",
-            "name": "kotlinx-coroutines-core",
-            "version": "1.3.5",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "kotlinx-coroutines-core-1.3.5.jar",
-          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.jar"
-          ],
-          "sha256": "6d3ddc759cd2094b1495198a8501e22a51c4c3d011ec801f5fc45a2cd25b8f11"
-        },
-        {
-          "id": {
-            "group": "org.jetbrains.kotlinx",
-            "name": "kotlinx-coroutines-core",
-            "version": "1.3.5",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "kotlinx-coroutines-core-1.3.5.pom",
-          "path": "org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5",
-          "urls": [
-            "https://jcenter.bintray.com/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/jetbrains/kotlinx/kotlinx-coroutines-core/1.3.5/kotlinx-coroutines-core-1.3.5.pom"
-          ],
-          "sha256": "f4a306487c17b8cdca8d3e5da50369a2e5ac7c665200516d427726dff5a56f92"
-        },
         {
           "id": {
             "group": "org.junit.jupiter",
@@ -4058,38 +4346,6 @@
           ],
           "sha256": "29f48a8da87672b5b94b77fa2ce50a0e715e33a510db5f2bff3b29bf4fb8794c"
         },
-        {
-          "id": {
-            "group": "org.opentest4j",
-            "name": "opentest4j",
-            "version": "1.2.0",
-            "type": "jar",
-            "extension": "jar"
-          },
-          "name": "opentest4j-1.2.0.jar",
-          "path": "org/opentest4j/opentest4j/1.2.0",
-          "urls": [
-            "https://jcenter.bintray.com/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar",
-            "https://repo.gradle.org/gradle/libs-releases/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar"
-          ],
-          "sha256": "58812de60898d976fb81ef3b62da05c6604c18fd4a249f5044282479fc286af2"
-        },
-        {
-          "id": {
-            "group": "org.opentest4j",
-            "name": "opentest4j",
-            "version": "1.2.0",
-            "type": "pom",
-            "extension": "pom"
-          },
-          "name": "opentest4j-1.2.0.pom",
-          "path": "org/opentest4j/opentest4j/1.2.0",
-          "urls": [
-            "https://jcenter.bintray.com/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.pom",
-            "https://repo.gradle.org/gradle/libs-releases/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.pom"
-          ],
-          "sha256": "a96e671816c1ff8803bdec74c9241f025bdfb277da5d2b4ee02266405936f994"
-        },
         {
           "id": {
             "group": "org.slf4j",
diff --git a/plugin/src/main/kotlin/org/nixos/gradle2nix/ConfigurationResolver.kt b/plugin/src/main/kotlin/org/nixos/gradle2nix/ConfigurationResolver.kt
index 7544c4c..6886b32 100644
--- a/plugin/src/main/kotlin/org/nixos/gradle2nix/ConfigurationResolver.kt
+++ b/plugin/src/main/kotlin/org/nixos/gradle2nix/ConfigurationResolver.kt
@@ -52,12 +52,12 @@ internal class ConfigurationResolver(
     private val ivy = Ivy.newInstance(ivySettings)
 
     fun resolve(configuration: Configuration): List<DefaultArtifact> {
-        val resolved = configuration.resolvedConfiguration
+        val resolved = configuration.resolvedConfiguration.lenientConfiguration
 
         val topLevelMetadata = resolved.firstLevelModuleDependencies
             .flatMap { resolveMetadata(it.moduleGroup, it.moduleName, it.moduleVersion) }
 
-        val allArtifacts = resolved.resolvedArtifacts
+        val allArtifacts = resolved.artifacts
             .filter { it.id.componentIdentifier is ModuleComponentIdentifier }
             .flatMap(::resolve)
 
@@ -205,7 +205,7 @@ internal class ConfigurationResolver(
         val seen = mutableSetOf<ComponentArtifactIdentifier>()
         return generateSequence(listOf(this)) { descs ->
             val parents = descs.flatMap { it.parentDescriptors(seen) }
-            seen.addAll(parents.map(ResolvedArtifactResult::id))
+            seen.addAll(parents.map(ResolvedArtifactResult::getId))
             parents.takeUnless { it.isEmpty() }
         }.flatten().distinct().toList()
     }
diff --git a/plugin/src/main/kotlin/org/nixos/gradle2nix/PluginResolver.kt b/plugin/src/main/kotlin/org/nixos/gradle2nix/PluginResolver.kt
index c9f5ea2..2c0420e 100644
--- a/plugin/src/main/kotlin/org/nixos/gradle2nix/PluginResolver.kt
+++ b/plugin/src/main/kotlin/org/nixos/gradle2nix/PluginResolver.kt
@@ -10,8 +10,9 @@ internal open class PluginResolver @Inject constructor(
 ) {
     private val configurations = pluginDependencyResolutionServices.configurationContainer
 
-    private val resolver = ConfigurationResolverFactory(pluginDependencyResolutionServices.resolveRepositoryHandler)
-        .create(pluginDependencyResolutionServices.dependencyHandler)
+    private val resolver = ConfigurationResolverFactory(
+        pluginDependencyResolutionServices.resolveRepositoryHandler
+    ).create(pluginDependencyResolutionServices.dependencyHandler)
 
     fun resolve(pluginRequests: List<PluginRequest>): List<DefaultArtifact> {
         val markerDependencies = pluginRequests.map {