Re: update-all

On 5/4/12 2:38 AM, Guillaume Ponchel wrote:
> Dear Fink devellopers,
> 
> after a prolonged periode without update (several weeks) the list of
> packages (and dependencies) to update might be quite long. This is why
> the update-all command has been develloped.
> 
> However, (1) the update-all-process progresses through the list of
> package to update alphabetically (am I wrong ?) and (2) to be updated,
> some packages might need a later one in the list to be already
> up-to-date. So, when this situation appears, the updating process is
> stoped, as a fatal error is reported.
> 
> The only workaround I found in this situation is to manually update
> the later packages before going back to the previous one. This is why
> I venture to ask you if it might be an improvement to automatically
> skip the package with error and try the next. At the end of the (first
> cycle of the) updating-process, the failed updates could then be
> retried.
> 
> With best regards,
> 
> Guillaume Ponchel.
> 


If a package truly needs a particular version of a dependency, it is
supposed to indicate that in its description, and that isn't the fault
of "update-all".

If, on the other hand, you're talking about a situation where you start
with e.g. libgettext3-dev and a package wants libgettext8-dev, i.e.
where the two versions are considered to be separate packages, then this
can indeed be a problem.

However, I believe it would be quite difficult to modify fink to move on
from a failed build attempt in a batch build.  "fink update-all" is
basically the same operation as "fink install <package>"; in the latter
case we don't want fink to move on if a dependency fails.

You can accomplish the same thing with a little shell scripting, though:

for pkg in `fink list -it | cut -f2` ; do fink -y update $pkg ; done

It's a little inefficient:

1) fink may try to install packages that have already been installed as
dependencies for something else, but it will quickly move on to the next
package in such a case.
2) fink will scan for updated packages on every operation rather than
just once.

But it works.
-- 
Alexander Hansen, Ph.D.
Fink User Liaison
http://finkakh.wordpress.com/2012/02/21/got-job/

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