I’m trying to use a library via ```includeBuild("....

# gradle

[christophsturm]

I’m trying to use a library via

includeBuild("../nanotest")

and

testImplementation("nanotest:nanotest:0.1")

the build file of the library has this:

group = "nanotest"
version = "0.1"

and the settings file this:

rootProject.name = "nanotest"

but when i build gradle does not find it:

Could not resolve nanotest:nanotest:0.1.
Required by:
    project :

I use composite builds all the time and it just works but now i have no idea whats wrong

[christophsturm]

hmm i get this error message when i run it from the commandline:

[christophsturm]

> Could not resolve all task dependencies for configuration ':testRuntimeClasspath'.
   > Could not resolve nanotest:nanotest:0.1.
     Required by:
         project :
      > The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm'. However we cannot choose between the following variants of project :nanotest:
          - compile
          - default
          - runtime
          - testCompile
          - testRuntime
        All of them match the consumer attributes:
          - Variant 'compile' capability nanotest:nanotest:0.1 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Unmatched attributes:
                  - Doesn't say anything about its component category (required a library)
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)
                  - Provides attribute 'org.jetbrains.kotlin.localToProject' with value 'local to :' but the consumer didn't ask for it
          - Variant 'default' capability nanotest:nanotest:0.1 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Unmatched attributes:
                  - Doesn't say anything about its component category (required a library)
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)
                  - Provides attribute 'org.jetbrains.kotlin.localToProject' with value 'local to :' but the consumer didn't ask for it
          - Variant 'runtime' capability nanotest:nanotest:0.1 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Unmatched attributes:
                  - Doesn't say anything about its component category (required a library)
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)
                  - Provides attribute 'org.jetbrains.kotlin.localToProject' with value 'local to :' but the consumer didn't ask for it
          - Variant 'testCompile' capability nanotest:nanotest:0.1 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Unmatched attributes:
                  - Doesn't say anything about its component category (required a library)
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)
                  - Provides attribute 'org.jetbrains.kotlin.localToProject' with value 'local to :' but the consumer didn't ask for it
          - Variant 'testRuntime' capability nanotest:nanotest:0.1 declares a component, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Unmatched attributes:
                  - Doesn't say anything about its component category (required a library)
                  - Doesn't say anything about how its dependencies are found (required its dependencies declared externally)
                  - Doesn't say anything about its target Java version (required compatibility with Java 8)
                  - Doesn't say anything about its elements (required them packaged as a jar)
                  - Doesn't say anything about its usage (required a runtime)
                  - Provides attribute 'org.jetbrains.kotlin.localToProject' with value 'local to :' but the consumer didn't ask for it
        The following variants were also considered but didn't match the requested attributes:
          - Variant 'apiElements' capability nanotest:nanotest:0.1 declares a library, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Incompatible because this component declares an API of a component compatible with Java 14 and the consumer needed a runtime of a component compatible with Java 8
          - Variant 'runtimeElements' capability nanotest:nanotest:0.1 declares a runtime of a library, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.jetbrains.kotlin.platform.type' with value 'jvm':
              - Incompatible because this component declares a component compatible with Java 14 and the consumer needed a component compatible with Java 8

[christophsturm]

it seems that gradle thinks one library is for java 14 and one is for 1.8

[christophsturm]

adding this to the nanotest build fixes it:

tasks.withType<JavaCompile>() {
    sourceCompatibility = "1.8"
    targetCompatibility = "1.8"
}

it already contained this:

tasks.withType<KotlinCompile> {
    kotlinOptions.jvmTarget = "1.8"
}

and it contains no java sources