Tim Phipps <[EMAIL PROTECTED]> wrote:
> Hi Peter,
>
> On Friday 26 May 2006 14:59, Peter S Galbraith wrote:
>
> > Tim Phipps <[EMAIL PROTECTED]> wrote:
> > > Package: xtide-data
> > > Version: 20040203-1
> > > Severity: normal
> > >
> > > There's a circular dependancy here.
> >
> > How so?
> >
> > > I think xtide-data shouldn't depend
> > > on xtide. The invoke-rc.d stuff will work fine if the xtide package isn't
> > > installed.
> >
> > xtide-data only depends on xtide because it is of no real use without
> > it,
Actually, that's not really true. See below.
> > not because of the invoke-rc.d stuff.
> >
> If you install xtide you get xtide-data automatically,
Not if you use `apt-get install'. Guess I'm old-fashioned.
> If you're using
> aptitude or something that records this fact then if you remove xtide you
> also remove xtide-data. Everything works with just the recommends dpend from
> xtide to xtide-data. If someone comes up with another program that can read
> xtide-data they may want their program to depend on xtide-data too, ther
> would be no need for xtide to be installed.
>
> > Can you tell me what is the circular dependency that I'm missing?
> It's when package A depends on package B and package B depends on package A.
> If they really do depend (i.e. break if the other isn't there then they
> should be both put in one package.
Except package A only recommends package B.
I've now noticed that I added the dependency on xtide when the format of
xtide-data changed and was only compatible with xtide (>= 2.6-1). I
then added:
Depends: xtide (>= 2.6-1)
Conflicts: xtide (<< 2.6-1)
I suppose the `Conflicts' can stay and the `Depends' can be removed.
--
Peter S. Galbraith, Debian Developer <[EMAIL PROTECTED]>
http://people.debian.org/~psg
GPG key 1024/D2A913A1 - 97CE 866F F579 96EE 6E68 8170 35FF 799E
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