Mix RUNTIME and BUILDTIME configs?

[HerrDerb]

I have following config keys:

acme.fileshare.%named%.enabled 
acme.fileshare.%named%.url
acme.fileshare.%named%.max-quota

I would like to fix enabled and url at build time but would like to leave max-quota to be runtime initialized for easy adjustment.

This means that I would have to split this up into two config files:

@ConfigMapping(prefix = "acme.fileshare")
@ConfigRoot(phase = ConfigPhase.BUILD_TIME)
interface ShareConfigBuildTime {

    @WithParentName
    Map<String, ShareConfigBuildTime> shares;

    interface ShareConfigBuildTime{

        boolean enabled();

        String url();

    }
}

and

@ConfigMapping(prefix = "acme.fileshare")
@ConfigRoot(phase = ConfigPhase.RUN_TIME)
interface ShareConfigRuntime {

    @WithParentName
    Map<String, ShareConfigRuntime> shares;

    interface ShareConfigRuntime{

        int maxQuota();

    }
}

This will give me an exception on runtime config as enabled is not mapped.

Is there a already built in way to handle a requirement like this?

[quarkus-bot[bot]]

/cc @radcortez (config)