Not sure if this is a gradle problem or not, but I...

# gradle

[Jordan Haven]

Not sure if this is a gradle problem or not, but I'm trying to pass a gradle property (project.version) through to read it in my kotlin module. I've tried every permutation of setProperty and environment (within tasks.withType<JavaExec> {}), and just a blanket System.setProperty() , in both the root build.gradle.kts as well as the module build.gradle.kts. No matter what, my corresponding System.getProperty() or System.getenv() is returning null in my kotlin file. Anyone got any pointers?

[mbonnin]

Can you clarify ? Do you want to read project.version at runtime?

[mbonnin]

If you're writing a CLI app, you can certainly customize the run task to put the version in the environment but that only works if you invoke from Gradle (./gradlew run )

[mbonnin]

If you're writing an Android app, you'll most likely have to generate a source file that contains the version and is compiled with the rest of your Kotlin sources

[mbonnin]

in both the root build.gradle.kts as well as the module build.gradle.kts.

Oh, I missed that, looks like it's all Gradle

[Jordan Haven]

At buildtime. Not an Android app. I'm developing a kotlin SDK, and would like the project.version to be accessible from within the SDK (so I can include it in headers sent to my backend)

[mbonnin]

Ah ok then it's not all Gradle. You'll need to codegen your way

[mbonnin]

This is an example: https://github.com/apollographql/apollo-kotlin/blob/f28a82817be71f11bbb30f531074624b4136b154/libraries/apollo-compiler/build.gradle.kts#L40

[Jordan Haven]

Awesome, thanks! That is.... surprising that it's not easier 😅

[mbonnin]

Because you don't know what environment your SDK is going to be run in I don't think there are many other solutions

[mbonnin]

Your build environment != your SDK runtime environment

[mbonnin]

There are Gradle plugins to help with this, let me check

[Jordan Haven]

very good point! I wasn't thinking about it like that.

[mbonnin]

https://github.com/yshrsmz/BuildKonfig for an example

[Jordan Haven]

thanks so much for your help!

[mbonnin]

Sure thing!