:packageDeb or :packageReleaseDeb fails at jpackage task about compose-multiplatform HOT 2 OPEN

⚠️ There seems to be a lot of things involved in getting just the Linux to build, I'm afraid none of those things are in docs and nobody ever tried to build it. So if any member reads this, I'd love to ask you to at least include this in the docs - if not straight up changing the plugin internals and adding better error messages and failsaves.

It seems that apt package fakeroot is required together with binutils to build linux images. Therefore for anybody reading this:

sudo apt install -y binutils fakeroot

If you're also building .Dmg, .Msi and .AppImage, update the targetFormats to the following:

if (System.getProperty("os.name").toLowerCase().contains("linux"))
    targetFormats(TargetFormat.AppImage)
else
    targetFormats(TargetFormat.Dmg, TargetFormat.Msi)

Otherwise builds will fail on macOS in the current state (#3814)

Update toolchain to at-least JDK21, as JDK17 seems to have broken jpackage for whatever reason.

kotlin {
    jvmToolchain {
        languageVersion.set(JavaLanguageVersion.of(21))
    }
}

If you're also building with proguard, JDK18 is the latest with support by default, so you need to update the proguard as well:

buildTypes.release.proguard {
    version.set("7.4.0") // at least 7.4 is required, check https://www.guardsquare.com/manual/releasenotes for newer versions
}

from compose-multiplatform.

Reproduced this issue with ubuntu 20.04 + openJdk 17 (also with coretto jdk 17)

With arch 6.2 + openJdk 17 "packageReleaseDistributionForCurrentOS" works as expected

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