Bug#767009: cyphesis-cpp: FTBFS: B-D on old libreadline5-dev

[Aaron M. Ucko]

Source: cyphesis-cpp
Version: 0.6.0-1
Severity: serious
Justification: fails to build from source (but built successfully in the past)

Automatic builds of cyphesis-cpp have been failng:

  The following packages have unmet dependencies:
   sbuild-build-depends-cyphesis-cpp-dummy : Depends: libreadline5-dev but it is not installable
  E: Unable to correct problems, you have held broken packages.

The alternative build dependency on libreadline-dev makes no
difference because, for the sake of maximum reproducibility, Debian's
autobuilders are configured to consider alternatives only when forced
to by explicit architecture restrictions.

Could you please change that term to just libreadline-dev, which is
now a (non-virtual) dummy package depending on the current real
package (libreadline6-dev)?

Thanks!