// CondBase.qbs
Application {
    name: 'conditionaldepends_base'
    property bool someProp: false
    Depends {
        condition: someProp
        name: 'dummy'
    }
}

// app.qbs
CondBase {
    name: 'conditionaldepends_derived_true_from_module'
    Depends { name: "dummy2" }
    someProp: dummy2.someTrueProp
}

    Depends { name: "dummy2" }