Bug#942119: libproxy: depends on mono for build-arch; mono not universally present

[Simon McVittie]

On Thu, 10 Oct 2019 at 19:15:33 +0200, Thorsten Glaser wrote:
> On Thu, 10 Oct 2019, Simon McVittie wrote:
> 
> >   * dh: Support running addons in "arch-only" or "indep-only" mode by
> >     adding "dh-sequence-ADDON" in Build-Depends-Arch or
> 
> Ah, so dh-sequence-* is not a package, just a shorthand for --with * ?

It's a virtual package with two functions:

* Its only provider is the package that implements the ADDON sequence,
  so build-depending on dh-sequence-ADDON is enough to get it installed

* Mentioning it in your Build-Depends{,-Arch,-Indep} tells debhelper to
  activate the relevant sequence during {all,arch-dep,arch-indep} builds,
  the same as "dh --with ADDON", without having to repeat yourself

    smcv