I'm attempting to build the latest version of sculpt from the source code via the following procedure:

I receive the following error message:

Error: missing depot archives:
       genodelabs/bin/x86_64/base-nova/2019-02-25
       genodelabs/pkg/x86_64/sculpt/2019-02-25

However, these packages do not exist. I must be missing some silly error. Can someone tell me where I went wrong?