[Debian-ha-maintainers] Bug#821129: Bug#821129: cluster-glue: circular dependency hell

[Bill Allombert]

On Sun, Apr 17, 2016 at 11:49:32AM +0200, Christoph Berg wrote:
> Re: Bill Allombert 2016-04-15 <20160415195507.GA13901 at yellowpig>
> > There is a circular dependency between cluster-glue, liblrm2, libpils2,
> > libplumb2, libplumbgpl2 and libstonith1:
> > 
> > cluster-glue 	:Depends: liblrm2 (>= 1.0.12-4), libpils2 (>= 1.0.12-4), libplumb2 (>= 1.0.12-4), libplumbgpl2 (>= 1.0.12-4), libstonith1 (>= 1.0.12-4)
> > liblrm2 	:Depends: libplumb2, cluster-glue (= 1.0.12-4)
> > libpils2 	:Depends: cluster-glue (= 1.0.12-4)
> > libplumb2 	:Depends: libpils2, cluster-glue (= 1.0.12-4)
> > libplumbgpl2 	:Depends: libpils2, cluster-glue (= 1.0.12-4)
> > libstonith1 	:Depends: libpils2, cluster-glue (= 1.0.12-4)
> 
> Hi,
> 
> the reason for the cluster-glue -> lib* dependency is that the former
> uses these libs, and the reason for the dependency the other way is
> that the libs have a /usr/share/doc-lib* -> cluster-glue symlink.
> (The lintian override explains that as well.)
> 
> > Complex circular dependencies are known to cause problems during upgrade, so we
> > should try to get rid of them.
> 
> I'd argue that this isn't a "complex" circular dependency, but we'll
> see what we can do. Possibly moving the doc directory to a new
> cluster-glue-common package would work.

Or you can get rid of the /usr/share/doc/lib* symlinks and replace them by
proper directories. Such symlinks have always been a bad idea by forcing
artificially strong dependencies, and being generally fragile.

In any case, it is strange to force users of any of theses libs to
install cluster-glue. For example a package might want to Build-Depends
on liblrm2-dev but do not need cluster-glue to build.

Cheers,
-- 
Bill. <ballombe at debian.org>

Imagine a large red swirl here.