[pacman-dev] [PATCH 0/3] Add "Usage" option for repos

[Dave Reisner]

On Mon, Aug 05, 2013 at 11:17:13AM +1000, Allan McRae wrote:
> On 05/08/13 03:25, Dave Reisner wrote:
> > I've been using these patches for a while now (see the author date on the
> > actual patches) and would like to present them again for feedback. I've
> > found it tremendously useful (particularly as an Arch packager) to be able
> > to keep an eye on other repos like [staging] without actually having them
> > enabled.
> > 
> 
> I like these patches, and I believe I had the last version of them on my
> working branch for a while.   I have just one comment for some discussion:
> 
> 
> > +*Usage =* ...::
> > +	Set the usage level for this repository. This option takes a list of
> tokens
> > +	which must be at least one of the following:
> > +		*Sync*;;
> > +			Enables refreshes for this repository.
> > +		*Search*;;
> > +			Enables searching for this repository.
> > +		*Install*;;
> > +			Enables installation of packages from this repository during a
> '\--sync'
> > +			operation.
> > +		*Upgrade*;;
> > +			Allows this repository to be a valid source of packages when
> performing
> > +			a '\--sysupgrade'.
> > +		*All*;;
> > +			Enables all of the above features for the repository. This is the
> default
> > +			if not specified.
> 
> I think the description here needs to be clearer.   Sync allows use to
> list the contents of the repo with -Sl?

Acting on a repo explicitly should ignore usage. I suppose I could make
that clear.

> Search, Install and Upgrade obviously imply Sync.  Does Install only
> allow explicit installation - i.e.  "-S repo/foo", or is "-S foo" enough?

If you set 'Install' for Usage, '-S foo' is sufficient.

> Is Upgrade different from All?  I would assume it implies Install (just
> by description).

-U has no concept of repos. Usage isn't relevant here.

> 
> 
> So here is my suggestion.  Can we put these in an order where the higher
> up ones imply everything below?
> 
> Sync < Search < Install < Upgrade == All
> 
> Allan

Hrmm. So, I suspect that 'Sync Search' will be the common alternative as
'Sync' or 'Search' on their own are not very useful, though 'Sync' alone
will still allow for -S $repo/$pkg. 'Install' without 'Sync' *and*
'Search' isn't very useful either, but if you want the effects of all 3
of these, you simply don't specify usage.

I'm +0 on the idea of adding a hierarchy. Anyone else have an opinion?