feat: simplifies the whole gradle plugin

- the `compileFregeTask` has a new optional input called `mainModuleName`. If
it is set, it and only its dependencies will be compiled, otherwise all
`.fr`files in the `mainSourceDir`will be compiled.

- the internal `DependencyFregeTask` is deleted because it was only
used by the vscode plugin and I decided to remove this gradle plugin
as a dependency.

- an example project folder was added to test the plugin manually.

17 files changed, 459 insertions, 213 deletions

diff --git a/.gitignore b/.gitignore
index 34670f9..151dd40 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,4 +5,5 @@ build
 .classpath
 .settings
 bin
-.DS_Store
\ No newline at end of file
+.DS_Store
+lib
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 02b545e..6c41fc2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,8 +13,10 @@ dependencies
 {
     def junit5Group   = 'org.junit.jupiter'
     def junit5Version = '5.8.2'
-    testImplementation group: junit5Group, name: 'junit-jupiter-api', version: junit5Version
-    testRuntimeOnly group: junit5Group, name: 'junit-jupiter-engine', version: junit5Version
+    testImplementation group: junit5Group,          name: 'junit-jupiter-api',      version: junit5Version
+    testRuntimeOnly    group: junit5Group,          name: 'junit-jupiter-engine',   version: junit5Version
+    testRuntimeOnly    group: 'org.junit.platform', name: 'junit-platform-console', version: junit5Version
+    testImplementation(enforcedPlatform("org.junit:junit-bom:${junit5Version}"))
 }
 
 java
@@ -53,6 +55,16 @@ configurations
     functionalRuntimeOnly.extendsFrom runtimeOnly
 }
 
+tasks.register('consoleLauncher', JavaExec)
+{
+    dependsOn testClasses
+    def reportsDir = layout.buildDirectory.dir('test-results')
+    mainClass      = 'org.junit.platform.console.ConsoleLauncher'
+    outputs.dir reportsDir
+    classpath sourceSets.test.runtimeClasspath + sourceSets.functionalTest.runtimeClasspath
+    args '--scan-classpath', '--details', 'tree', '--reports-dir', reportsDir.get()
+}
+
 tasks.register('functionalTest', Test)
 {
     description     = 'Runs functional tests.'
diff --git a/example-project/build.gradle b/example-project/build.gradle
new file mode 100644
index 0000000..6fefaec
--- /dev/null
+++ b/example-project/build.gradle
@@ -0,0 +1,10 @@
+plugins {
+    id 'ch.fhnw.thga.frege' version '1.7.0-alpha'
+}
+
+frege {
+    version = '3.25.84'
+    release = '3.25alpha'
+    mainModule = 'ch.fhnw.thga.Test'
+    replSource = 'ch.fhnw.thga.Test'
+}
\ No newline at end of file
diff --git a/example-project/gradle/wrapper/gradle-wrapper.jar b/example-project/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7454180
--- /dev/null
+++ b/example-project/gradle/wrapper/gradle-wrapper.jar
diff --git a/example-project/gradle/wrapper/gradle-wrapper.properties b/example-project/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..e750102
--- /dev/null
+++ b/example-project/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/example-project/gradlew b/example-project/gradlew
new file mode 100755
index 0000000..1b6c787
--- /dev/null
+++ b/example-project/gradlew
@@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/example-project/gradlew.bat b/example-project/gradlew.bat
new file mode 100644
index 0000000..ac1b06f
--- /dev/null
+++ b/example-project/gradlew.bat
@@ -0,0 +1,89 @@
+@rem

+@rem Copyright 2015 the original author or authors.

+@rem

+@rem Licensed under the Apache License, Version 2.0 (the "License");

+@rem you may not use this file except in compliance with the License.

+@rem You may obtain a copy of the License at

+@rem

+@rem      https://www.apache.org/licenses/LICENSE-2.0

+@rem

+@rem Unless required by applicable law or agreed to in writing, software

+@rem distributed under the License is distributed on an "AS IS" BASIS,

+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+@rem See the License for the specific language governing permissions and

+@rem limitations under the License.

+@rem

+

+@if "%DEBUG%" == "" @echo off

+@rem ##########################################################################

+@rem

+@rem  Gradle startup script for Windows

+@rem

+@rem ##########################################################################

+

+@rem Set local scope for the variables with windows NT shell

+if "%OS%"=="Windows_NT" setlocal

+

+set DIRNAME=%~dp0

+if "%DIRNAME%" == "" set DIRNAME=.

+set APP_BASE_NAME=%~n0

+set APP_HOME=%DIRNAME%

+

+@rem Resolve any "." and ".." in APP_HOME to make it shorter.

+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi

+

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"

+

+@rem Find java.exe

+if defined JAVA_HOME goto findJavaFromJavaHome

+

+set JAVA_EXE=java.exe

+%JAVA_EXE% -version >NUL 2>&1

+if "%ERRORLEVEL%" == "0" goto execute

+

+echo.

+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:findJavaFromJavaHome

+set JAVA_HOME=%JAVA_HOME:"=%

+set JAVA_EXE=%JAVA_HOME%/bin/java.exe

+

+if exist "%JAVA_EXE%" goto execute

+

+echo.

+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%

+echo.

+echo Please set the JAVA_HOME variable in your environment to match the

+echo location of your Java installation.

+

+goto fail

+

+:execute

+@rem Setup the command line

+

+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar

+

+

+@rem Execute Gradle

+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*

+

+:end

+@rem End local scope for the variables with windows NT shell

+if "%ERRORLEVEL%"=="0" goto mainEnd

+

+:fail

+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of

+rem the _cmd.exe /c_ return code!

+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1

+exit /b 1

+

+:mainEnd

+if "%OS%"=="Windows_NT" endlocal

+

+:omega

diff --git a/example-project/settings.gradle b/example-project/settings.gradle
new file mode 100644
index 0000000..91a56b3
--- /dev/null
+++ b/example-project/settings.gradle
@@ -0,0 +1,8 @@
+pluginManagement {
+    repositories {
+        mavenLocal()
+        gradlePluginPortal()
+    }
+}
+
+rootProject.name = 'example-project'
\ No newline at end of file
diff --git a/example-project/src/main/frege/ch/fhnw/thga/Dep.fr b/example-project/src/main/frege/ch/fhnw/thga/Dep.fr
new file mode 100644
index 0000000..1edc713
--- /dev/null
+++ b/example-project/src/main/frege/ch/fhnw/thga/Dep.fr
@@ -0,0 +1,3 @@
+module ch.fhnw.thga.Dep where
+
+square x = x * x
\ No newline at end of file
diff --git a/example-project/src/main/frege/ch/fhnw/thga/Test.fr b/example-project/src/main/frege/ch/fhnw/thga/Test.fr
new file mode 100644
index 0000000..8467d11
--- /dev/null
+++ b/example-project/src/main/frege/ch/fhnw/thga/Test.fr
@@ -0,0 +1,14 @@
+module ch.fhnw.thga.Test where
+
+import ch.fhnw.thga.Dep
+
+frobnicate a = (square a, "Frege rocks")
+
+add a b = a + b
+
+sub a b = a - b
+
+mult a b = a * b
+
+main = do
+  println $ frobnicate 5
\ No newline at end of file
diff --git a/gradle.properties b/gradle.properties
index 9423bd0..497909e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
 group = ch.fhnw.thga
-version = 1.6.1-alpha
\ No newline at end of file
+version = 1.7.0-alpha
\ No newline at end of file
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
index a7c2b35..ce384cb 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
@@ -2,7 +2,6 @@ package ch.fhnw.thga.gradleplugins;
 
 import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_DOWNLOAD_DIRECTORY;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.COMPILE_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.DEPS_FREGE_TASK_NAME;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_EXTENSION_NAME;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_PLUGIN_ID;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.REPL_FREGE_TASK_NAME;
@@ -14,7 +13,6 @@ import static org.gradle.testkit.runner.TaskOutcome.FROM_CACHE;
 import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
 import static org.gradle.testkit.runner.TaskOutcome.UP_TO_DATE;
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.BufferedWriter;
@@ -41,15 +39,22 @@ import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.TestInstance.Lifecycle;
 import org.junit.jupiter.api.io.TempDir;
 
-import ch.fhnw.thga.gradleplugins.internal.DependencyFregeTask;
-
 @TestInstance(Lifecycle.PER_CLASS)
-public class FregePluginFunctionalTest {
-    private static final String NEW_LINE = System.lineSeparator();
-    private static final String SIMPLE_FREGE_CODE = String.join(NEW_LINE, "module ch.fhnw.thga.Completion where",
-                    NEW_LINE, NEW_LINE, "  complete :: Int -> (Int, String)", NEW_LINE,
-                    "  complete i = (i, \"Frege rocks\")",
-                    NEW_LINE);
+public class FregePluginFunctionalTest
+{
+    private static final String NEW_LINE                     = System.lineSeparator();
+    private static final String FREGE_COMPLETION_MODULE_CODE = 
+        String.join
+        (
+            NEW_LINE,
+            "module ch.fhnw.thga.Completion where",
+            NEW_LINE,
+            NEW_LINE,
+            "  complete :: Int -> (Int, String)",
+            NEW_LINE,
+            "  complete i = (i, \"Frege rocks\")",
+            NEW_LINE
+        );
 
     private static FregeDTOBuilder fregeBuilder;
 
@@ -96,9 +101,12 @@ public class FregePluginFunctionalTest {
 
     private void setupDefaultFregeProjectStructure(String fregeCode, String fregeFileName, String buildFileConfig)
                     throws Exception {
-            Files.createDirectories(testProjectDir.toPath().resolve(Paths.get("src", "main", "frege")));
-            File fregeFile = testProjectDir.toPath().resolve(Paths.get("src", "main", "frege", fregeFileName))
-                            .toFile();
+            Files.createDirectories(testProjectDir.toPath().resolve(Paths.get(
+                "src", "main", "frege", "ch", "fhnw", "thga"
+            )));
+            File fregeFile = testProjectDir.toPath().resolve(Paths.get(
+                "src", "main", "frege", "ch", "fhnw", "thga", fregeFileName
+            )).toFile();
             writeToFile(fregeFile, fregeCode);
             appendToFile(buildFile, buildFileConfig);
     }
@@ -171,7 +179,7 @@ public class FregePluginFunctionalTest {
                     String completionFr = "Completion.fr";
                     String minimalBuildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, minimalBuildFileConfig);
 
                     BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
 
@@ -193,7 +201,7 @@ public class FregePluginFunctionalTest {
                     String buildConfigWithCompilerFlags = createFregeSection(fregeBuilder.version("'3.25.84'")
                                     .release("'3.25alpha'").compilerFlags("['-v', '-make', '-O', '-hints']")
                                     .build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr,
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr,
                                     buildConfigWithCompilerFlags);
 
                     BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
@@ -216,7 +224,7 @@ public class FregePluginFunctionalTest {
                     Path customMainSourceDir = testProjectDir.toPath().resolve(Paths.get("src", "frege"));
                     Files.createDirectories(customMainSourceDir);
                     File completionFr = customMainSourceDir.resolve("Completion.fr").toFile();
-                    writeToFile(completionFr, SIMPLE_FREGE_CODE);
+                    writeToFile(completionFr, FREGE_COMPLETION_MODULE_CODE);
                     String minimalBuildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'")
                                                     .mainSourceDir("layout.projectDirectory.dir('src/frege')")
@@ -240,7 +248,7 @@ public class FregePluginFunctionalTest {
                     String completionFr = "Completion.fr";
                     String minimalBuildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, minimalBuildFileConfig);
 
                     BuildResult first = runGradleTask(COMPILE_FREGE_TASK_NAME);
                     assertEquals(SUCCESS, first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
@@ -254,7 +262,7 @@ public class FregePluginFunctionalTest {
                     String completionFr = "Completion.fr";
                     String minimalBuildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, minimalBuildFileConfig);
 
                     BuildResult first = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
                     assertEquals(SUCCESS, first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
@@ -268,7 +276,7 @@ public class FregePluginFunctionalTest {
                     BuildResult second = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
                     assertEquals(SUCCESS, second.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
 
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, "");
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, "");
                     BuildResult third = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
                     assertEquals(FROM_CACHE, third.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
             }
@@ -284,7 +292,7 @@ public class FregePluginFunctionalTest {
 
                     String minimalBuildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, minimalBuildFileConfig);
                     setupDefaultFregeProjectStructure(frobCode, frobFr, "");
 
                     BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
@@ -318,7 +326,7 @@ public class FregePluginFunctionalTest {
                     String buildConfigWithIllegalCompilerFlags = createFregeSection(fregeBuilder
                                     .version("'3.25.84'")
                                     .release("'3.25alpha'").compilerFlags("['-make', '-bla']").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr,
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr,
                                     buildConfigWithIllegalCompilerFlags);
 
                     BuildResult result = runAndFailGradleTask(COMPILE_FREGE_TASK_NAME);
@@ -339,7 +347,7 @@ public class FregePluginFunctionalTest {
                     String minimalBuildFileConfigWithoutMake = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'").compilerFlags("['-v']")
                                                     .build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr,
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr,
                                     minimalBuildFileConfigWithoutMake);
                     setupDefaultFregeProjectStructure(frobCode, frobFr, "");
 
@@ -376,7 +384,7 @@ public class FregePluginFunctionalTest {
                     String buildFileConfig = createFregeSection(
                                     fregeBuilder.version("'3.25.84'").release("'3.25alpha'")
                                                     .mainModule("'ch.fhnw.thga.Completion'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, buildFileConfig);
+                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, buildFileConfig);
 
                     BuildResult result = runAndFailGradleTask(RUN_FREGE_TASK_NAME);
                     assertTrue(project.getTasks().getByName(RUN_FREGE_TASK_NAME) instanceof RunFregeTask);
@@ -400,90 +408,6 @@ public class FregePluginFunctionalTest {
             }
     }
 
-    @Nested
-    @TestInstance(Lifecycle.PER_CLASS)
-    @IndicativeSentencesGeneration(
-        separator = " -> ",
-        generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Deps_frege_task_works {
-        @Test
-        void given_minimal_build_file_config() throws Exception {
-            String completionFr           = "Completion.fr";
-            String minimalBuildFileConfig = createFregeSection(
-                fregeBuilder
-                .version("'3.25.84'")
-                .release("'3.25alpha'")
-                .build());
-            setupDefaultFregeProjectStructure(
-                SIMPLE_FREGE_CODE,
-                completionFr,
-                minimalBuildFileConfig);
-
-            BuildResult result = runGradleTask(
-                DEPS_FREGE_TASK_NAME,
-                "-q",
-                String.format("--replSource=%s", completionFr));
-
-            assertTrue(
-                project.getTasks().getByName(DEPS_FREGE_TASK_NAME)
-                instanceof DependencyFregeTask);
-            assertEquals(SUCCESS, result.task(":" + DEPS_FREGE_TASK_NAME).getOutcome());
-            assertTrue(result.getOutput().contains("frege3.25.84.jar"));
-            assertFalse(result.getOutput().contains("Completion.java"));
-            assertFalse(
-                testProjectDir
-                .toPath()
-                .resolve("/build/classes/main/frege/ch/fhnw/thga/Completion.java").toFile()
-                .exists());
-        }
-
-
-        @Test
-        void given_build_file_config_with_dependencies() throws Exception {
-            String completionFr           = "Completion.fr";
-            String minimalBuildFileConfig = createFregeSection(
-                fregeBuilder
-                .version("'3.25.84'")
-                .release("'3.25alpha'")
-                .build());
-            setupDefaultFregeProjectStructure(
-                SIMPLE_FREGE_CODE,
-                completionFr,
-                minimalBuildFileConfig);
-            appendToFile(
-                buildFile,
-                String.join(
-                    System.lineSeparator(),
-                    "repositories {",
-                      "mavenCentral()",
-                    "}"));
-            appendToFile(
-                buildFile,
-                String.join(
-                    System.lineSeparator(),
-                    "dependencies {",
-                      "implementation group: 'org.json', name: 'json', version: '20211205'",
-                    "}"));
-
-            BuildResult result = runGradleTask(
-                DEPS_FREGE_TASK_NAME,
-                "-q",
-                String.format("--replSource=%s", completionFr));
-
-            assertTrue(
-                project.getTasks().getByName(DEPS_FREGE_TASK_NAME)
-                instanceof DependencyFregeTask);
-            assertEquals(SUCCESS, result.task(":" + DEPS_FREGE_TASK_NAME).getOutcome());
-            assertTrue(result.getOutput().contains("frege3.25.84.jar"));
-            assertTrue(result.getOutput().contains("org.json"));
-            assertFalse(result.getOutput().contains("Completion.java"));
-            assertFalse(
-                testProjectDir
-                .toPath()
-                .resolve("/build/classes/main/frege/ch/fhnw/thga/Completion.java").toFile()
-                .exists());
-        }
-    }
 
     @Nested
     @TestInstance(Lifecycle.PER_CLASS)
@@ -500,10 +424,10 @@ public class FregePluginFunctionalTest {
                 fregeBuilder
                 .version("'3.25.84'")
                 .release("'3.25alpha'")
-                .replSource(String.format("'%s'", completionFr))
+                .replSource(String.format("'ch.fhnw.thga.Completion'"))
                 .build());
             setupDefaultFregeProjectStructure(
-                SIMPLE_FREGE_CODE,
+                FREGE_COMPLETION_MODULE_CODE,
                 completionFr,
                 minimalReplModuleConfig);
 
@@ -515,12 +439,7 @@ public class FregePluginFunctionalTest {
             assertEquals(SUCCESS, result.task(":" + REPL_FREGE_TASK_NAME).getOutcome());
             assertTrue(result.getOutput().contains("java -cp"));
             assertTrue(result.getOutput().contains("frege3.25.84.jar"));
-            assertFalse(result.getOutput().contains("Completion.java"));
-            assertFalse(
-                testProjectDir
-                .toPath()
-                .resolve("/build/classes/main/frege/ch/fhnw/thga/Completion.java").toFile()
-                .exists());
+            assertTrue(result.getOutput().contains("Completion.java"));
         }
     }
 
@@ -541,7 +460,7 @@ public class FregePluginFunctionalTest {
                 .release("'3.25alpha'")
                 .build());
             setupDefaultFregeProjectStructure(
-                SIMPLE_FREGE_CODE,
+                FREGE_COMPLETION_MODULE_CODE,
                 completionFr,
                 minimalBuildFileConfig);
 
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/CompileFregeTask.java b/src/main/java/ch/fhnw/thga/gradleplugins/CompileFregeTask.java
index bc3c8f7..c280607 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/CompileFregeTask.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/CompileFregeTask.java
@@ -3,16 +3,13 @@ package ch.fhnw.thga.gradleplugins;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.List;
-import java.util.function.BiFunction;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import javax.inject.Inject;
 
 import org.gradle.api.DefaultTask;
-import org.gradle.api.file.Directory;
 import org.gradle.api.file.DirectoryProperty;
-import org.gradle.api.file.FileTree;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.model.ObjectFactory;
 import org.gradle.api.provider.ListProperty;
@@ -31,25 +28,8 @@ import org.gradle.api.tasks.TaskAction;
 
 @CacheableTask
 public abstract class CompileFregeTask extends DefaultTask {
+    private static final String FREGE_FILES_GLOB_PATTERN = "**/*.fr";
     private final JavaExec javaExec;
-    private static final String FREGE_FILES_GLOB_PATTERN          = "**/*.fr";
-    private static final BiFunction<String, Directory, FileTree>
-                                            excludeReplSourceFile =
-        (String replSource,
-        Directory srcDir) ->
-    {
-        if (replSource.isEmpty()) return srcDir.getAsFileTree();
-        return srcDir.getAsFileTree().matching(
-            pattern ->
-            {
-                pattern.exclude(
-                    String.format(
-                    "**/%s",
-                    replSource)
-                );
-            }
-        );
-    };
 
     @InputFile
     @PathSensitive(PathSensitivity.RELATIVE)
@@ -66,7 +46,7 @@ public abstract class CompileFregeTask extends DefaultTask {
     public abstract Property<String> getFregeDependencies();
 
     @Input
-    public abstract Property<String> getReplSource();
+    public abstract Property<String> getFregeMainModuleName();
 
     @OutputDirectory
     public abstract DirectoryProperty getFregeOutputDir();
@@ -82,15 +62,19 @@ public abstract class CompileFregeTask extends DefaultTask {
     }
 
     @Internal
-    public final Provider<FileTree> getSourceFileTree() {
-        return getReplSource().zip(
-            getFregeMainSourceDir(),
-            excludeReplSourceFile);
+    public final Provider<List<String>> getCompileItems() {
+        return getFregeMainModuleName()
+            .map(name ->
+            {
+                return name.isEmpty() ? getFregeSourceFiles().get()
+                                      : List.of(name);
+            });
     }
 
     @Internal
-    public final Provider<List<String>> getSourceFiles() {
-        return getSourceFileTree()
+    public final Provider<List<String>> getFregeSourceFiles() {
+        return getFregeMainSourceDir()
+            .map(srcDir -> srcDir.getAsFileTree())
             .map(tree -> tree.matching(pattern -> pattern.include(FREGE_FILES_GLOB_PATTERN)))
             .map(tree -> tree.getFiles().stream()
             .map(file -> file.getAbsolutePath())
@@ -111,14 +95,14 @@ public abstract class CompileFregeTask extends DefaultTask {
         javaExec = objectFactory.newInstance(JavaExec.class);
     }
 
-    private List<String> buildCompilerArgsFromProperties(List<String> directoryArg)
+    private List<String> buildCompilerArgsFromProperties(List<String> targetDirectoryArg)
     {
         return Stream.of(
             getDependencyArg().get(),
             getFregeCompilerFlags().get(),
-            directoryArg,
+            targetDirectoryArg,
             getSourcePathArg().get(),
-            getSourceFiles().get())
+            getCompileItems().get())
         .filter(lists -> !lists.isEmpty())
         .flatMap(Collection::stream)
         .collect(Collectors.toList());
@@ -126,11 +110,11 @@ public abstract class CompileFregeTask extends DefaultTask {
 
     @TaskAction
     public void compileFrege() {
-        List<String> directoryArg = List.of(
+        List<String> targetDirectoryArg = List.of(
             "-d",
             getFregeOutputDir().getAsFile().get().getAbsolutePath());
 
         javaExec.setClasspath(getProject().files(getFregeCompilerJar()))
-                .setArgs(buildCompilerArgsFromProperties(directoryArg)).exec();
+                .setArgs(buildCompilerArgsFromProperties(targetDirectoryArg)).exec();
     }
 }
\ No newline at end of file
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java b/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
index a318b81..ce2ce01 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
@@ -5,8 +5,6 @@ import org.gradle.api.Project;
 import org.gradle.api.artifacts.Configuration;
 import org.gradle.api.tasks.TaskProvider;
 
-import ch.fhnw.thga.gradleplugins.internal.DependencyFregeTask;
-
 public class FregePlugin implements Plugin<Project>
 {
     public static final String SETUP_FREGE_TASK_NAME      = "setupFrege";
@@ -54,7 +52,7 @@ public class FregePlugin implements Plugin<Project>
                     task.getFregeOutputDir().set(extension.getOutputDir());
                     task.getFregeCompilerFlags().set(extension.getCompilerFlags());
                     task.getFregeDependencies().set(implementation.getAsPath());
-                    task.getReplSource().set("");
+                    task.getFregeMainModuleName().set("");
                 }
             );
 
@@ -63,28 +61,15 @@ public class FregePlugin implements Plugin<Project>
             RunFregeTask.class,
             task ->
             {
-                task.dependsOn(compileFregeTask);
-                task.getFregeCompilerJar().set(
-                    setupFregeCompilerTask.get().getFregeCompilerOutputPath());
-                task.getFregeOutputDir().set(extension.getOutputDir());
+                
                 task.getMainModule().set(extension.getMainModule());
-                task.getFregeDependencies().set(implementation.getAsPath());
-            }
-        );
-
-        project.getTasks().register(
-            DEPS_FREGE_TASK_NAME,
-            DependencyFregeTask.class,
-            task ->
-            {
                 task.dependsOn(compileFregeTask.map(
                     compileTask ->
                     {
-                        compileTask.getReplSource().set(task.getReplSource());
+                        compileTask.getFregeMainModuleName().set(task.getMainModule());
                         return compileTask;
                     })
                 .get());
-                task.dependsOn(compileFregeTask);
                 task.getFregeCompilerJar().set(
                     setupFregeCompilerTask.get().getFregeCompilerOutputPath());
                 task.getFregeOutputDir().set(extension.getOutputDir());
@@ -101,7 +86,7 @@ public class FregePlugin implements Plugin<Project>
                 task.dependsOn(compileFregeTask.map(
                     compileTask ->
                     {
-                        compileTask.getReplSource().set(task.getReplSource());
+                        compileTask.getFregeMainModuleName().set(task.getReplSource());
                         return compileTask;
                     })
                 .get());
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java b/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
index dd18270..7903d7e 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
@@ -4,9 +4,11 @@ import org.gradle.api.DefaultTask;
 import org.gradle.api.file.DirectoryProperty;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.Property;
+import org.gradle.api.provider.Provider;
 import org.gradle.api.tasks.Input;
 import org.gradle.api.tasks.InputDirectory;
 import org.gradle.api.tasks.InputFile;
+import org.gradle.api.tasks.Internal;
 import org.gradle.api.tasks.TaskAction;
 import org.gradle.api.tasks.options.Option;
 
@@ -27,6 +29,13 @@ public abstract class ReplFregeTask extends DefaultTask {
            description = "The filename which you want to load into the repl, e.g. 'myFregeFile.fr'")
     public abstract Property<String> getReplSource();
 
+    @Internal
+    public final Provider<String> getReplClassName()
+    {
+        return getReplSource()
+            .map(replSource -> replSource.substring(replSource.lastIndexOf(".")));
+    }
+
     @TaskAction
     public void printStartFregeReplCommand() {
         System.out.println("Execute the following command to start the Frege Repl:");
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/internal/DependencyFregeTask.java b/src/main/java/ch/fhnw/thga/gradleplugins/internal/DependencyFregeTask.java
deleted file mode 100644
index 87f4d2b..0000000
--- a/src/main/java/ch/fhnw/thga/gradleplugins/internal/DependencyFregeTask.java
+++ /dev/null
@@ -1,41 +0,0 @@
-package ch.fhnw.thga.gradleplugins.internal;
-
-import org.gradle.api.DefaultTask;
-import org.gradle.api.file.DirectoryProperty;
-import org.gradle.api.file.RegularFileProperty;
-import org.gradle.api.provider.Property;
-import org.gradle.api.tasks.Input;
-import org.gradle.api.tasks.InputDirectory;
-import org.gradle.api.tasks.InputFile;
-import org.gradle.api.tasks.TaskAction;
-import org.gradle.api.tasks.options.Option;
-
-import ch.fhnw.thga.gradleplugins.SharedTaskLogic;
-
-public abstract class DependencyFregeTask extends DefaultTask {
-    @InputFile
-    public abstract RegularFileProperty getFregeCompilerJar();
-
-    @Input
-    public abstract Property<String> getFregeDependencies();
-
-    @InputDirectory
-    public abstract DirectoryProperty getFregeOutputDir();
-
-    @Input
-    @Option(option     = "replSource",
-           description = "The filename which you want to load into the repl, e.g. 'myFregeFile.fr'")
-    public abstract Property<String> getReplSource();
-
-
-    @TaskAction
-    public void fregeDependencies() {
-        System.out.println(
-            SharedTaskLogic.setupClasspath(
-                getProject(),
-                getFregeDependencies(),
-                getFregeCompilerJar(),
-                getFregeOutputDir())
-            .get().getAsPath());
-    }
-}
diff --git a/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java b/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java
new file mode 100644
index 0000000..6f10d70
--- /dev/null
+++ b/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java
@@ -0,0 +1,14 @@
+package ch.fhnw.thga.gradleplugins;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+import org.junit.jupiter.api.TestInstance.Lifecycle;
+
+@TestInstance(Lifecycle.PER_CLASS)
+public class SharedTaskLogicTest 
+{
+    @Test
+    void given_valid_frege_module_name_then_can_extract_class_name()
+    {
+    }
+}
\ No newline at end of file