Common development practices

There are only one option to code both in Kotlin and Rust in a single IDE: IntelliJ IDEA Ultimate, which needs a paid subscription. Fleet was another option, but JetBrains announced that they are dropping the KMP support in Fleet.

Therefore, most users may use different IDEs for Kotlin and Rust when developing with this project. For Kotlin, you can use Android Studio or IntelliJ IDEA, and for Rust, you can use rust-analyzer with Visual Studio Code or RustRover. In normal cases, Kotlin handles the part interacting with users such as UI while Rust handles the core business logic, so using two IDEs won't harm the developer experience that much.

Since building Rust takes much time than compiling Kotlin, try separating the Kotlin part that uses Rust directly as a core library. You can build and publish the core library using the maven-publish plugin and the other Kotlin part can download it from a maven repository.

The more platforms you target, the larger the build result will be. Ensure your CI has enough space to build your project. Gradle caches files from the build in ~/.gradle/caches. If you encounter much more No space left on device errors after using this project, try removing ~/.gradle/caches. Since Gradle still tries to find cached files in ~/.gradle/caches after you remove it, remove all .gradle and build directories in your project as well. On macOS & Linux:

find . -name .gradle | xargs rm -rf
find . -name "build" | grep -v '^./target' | xargs -r rm -rf

In PowerShell on Windows:

Get-ChildItem . -Attributes Directory -Recurse |
    Where-Object { $_.Name -eq ".gradle" } |
    ForEach-Object { Remove-Item -Recurse -Force $_ }
Get-ChildItem . -Attributes Directory -Recurse |
    Where-Object { $_.Name -eq "build" } |
    Where-Object { -not $_.FullName.Contains("\target\") } |
    ForEach-Object { Remove-Item -Recurse -Force $_ }

When you build iOS apps, Xcode generates files in /private/var/folders/zz, which are removed automatically after every reboot. Try restart your Mac if you still have the disk space issue after removing the Gradle caches.