IssueTracker

The supported DSL is

android {
   buildTypes {
       dev {
           isDefault = true
       }
   }
}

Then equivalently

android {
    productFlavors {
        foo {
            isDefault = true
        }
    }
}

Watch out if you use initWith(...), then this property is copied, too. Maybe something like this would prevent having multiple defaults:

android {
    defaultVariant = "variantName"
}

re #81 - filed https://b.corp.google.com/issues/152736496 for not copying. We specifically avoided having a string based name so it wasn't brittle to e.g. adding a flavor dimension or using the variant filter. Re #82, please file separate issue with all of the requested information. (which you can link from this one). That sounds like an editor issue.

re #82, I only get that if I use:

android {
    productFlavors {
        foo {
            isDefault = true
        }
    }
}

If I omit the = and use:

android {
    productFlavors {
        foo {
            isDefault true # or isDefault.set(true)
        }
    }
}

I do not get that warning.

#85 Please file a new issue with exactly what you did, what you expected to happen and what did actually happen.

#88 please file a new issue including the information requested here

Done on #153475647.