Skip to content

When Gradle or the IDE let you down, just --nuke all them caches


Notifications You must be signed in to change notification settings


Folders and files

Last commit message
Last commit date

Latest commit



52 Commits

Repository files navigation


A Kotlin script that nukes all build caches from Gradle/Android projects. Useful when Gradle or the IDE let you down 💔

deep-clean in action

🎩 h/t to @Takhion for the original idea, and to @holgerbrandl for KScript.

The script has been tested on macOS 🍎, but it is completely untested on Linux 🐧 and Windows 🖥️. KScript may not work at all on Windows!

⚠️There may be major issues on Windows/Linux when using -n, please let me know if you encounter any such issue!


Running the script

deep-clean requires three components to be on your PATH:

If you have all three commands on your PATH, then you can simply download and execute the script:

$ cd /your/project/root.folder
$ [kscript] deep-clean.kts [options]

Note: on macOS and Linux the script does not need kscript to be invoked, because it has a shebang. On Windows, you will need to explicitly specify you want to use kscript to run it.

Where the options are:

-b --backup           Renames files and folders instead of deleting them. Implies
-d --dry-run          Don't delete anything. Useful for testing. Implies --verbose.
-i --ide-files        This also deletes IDEA/Android Studio project files (*.iml).
                      If used in conjunction with --nuke it will also delete the
                      .idea folder in the current directory.
-p --ide-preferences  ⚠️  THIS IS DANGEROUS SHIT ⚠️  Will wipe your IDE settings!
                      This deletes the GLOBAL IDEA/Android Studio preferences.
                      This option requires the --nuke option to be active too, since
                      it touches global system state.
--not-recursive       Don't recursively search sub-folders of this folder for matches.
                      The default behaviour is to look for matches in sub-directories,
                      since things like 'build' folders and '.iml' files are not all
                      found at the top level of a project directory structure. This
                      flag is useful if you know you have matches you want to keep,
                      e.g., if your code contains a package with a name like 'build'.
                      This option severely limits the effectiveness of the deep clean.
-n --nuke             ⚠️  THIS IS DANGEROUS SHIT ⚠️  Super-deep clean
                      This includes clearing out global folders, including:
                       * the global Gradle cache
                       * the global Maven artefacts
                       * the wrapper-downloaded Gradle distros
                       * the Gradle daemon data (logs, locks, etc.)
                       * the Android build cache
                      Nukes the entire thing from orbit — it's the only way to be sure.
-v --verbose          Print detailed information about all commands.

For this script to work, you need to have kotlin, kscript and maven on your PATH. If you DON'T have all three commands on your PATH, then read on to the next section to install them.

Installing the script dependencies

To make the script run, we'll first need to install all the required dependencies. All dependencies are available on SDKMan! (Windows, Linux, macOS). Note that KScript support for Windows is not officially available yet.

$ sdk install kotlin
$ sdk install maven
$ sdk install kscript


Copyright 2022 Sebastiano Poggi

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

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.

For more information please refer to the LICENSE file.