I have two KMP libraries in one project, and I want to have one jar/lib with all source code from both libs/modules.

I added second one to first one:

    sourceSets {
        commonMain.dependencies {
            api(project(":second_kpm_lib"))
        }
        commonTest.dependencies {
            implementation(libs.kotlin.test)
        }
    }

And when I’m building .jar for this first lib, source code from secon is not included in it.
What I should do to make it work?