B0_opam.CmdletSource.opam.* cmdlets.
See the B0 opam manual and:
b0 -- .opam.list --help b0 -- .opam.file --help b0 -- .opam.publish --help
for more information.
file is the .opam.file cmdlet.
list is the .opam.list cmdlet.
publish is the .opam.publish cmdlet.