In order to skip rw_lockfile and dogpile_lockfile for DBMBackend one needs to provide False. There is no way to provide False from .ini files though.
I put a basic translator for int, false, true, None in fcb7446102bd34713d5072f53ff829878b3c61c7. Hopefully this is enough; if not, we will have to make the backends receive a typed dictionary object from which they can request specific types.
Thank you for the very quick response and fix! I will try it out and report how it works.
It works for my case.
I use *.arguments.dogpile_lockfile = false to prevent the dogpile lock to temporarily circumvent the #5 bug about the nested creators.
*.arguments.dogpile_lockfile = false
Thank you for the quick fix again!