[aur-general] Support for source mirror lists in PKGBUILD

[Ido Rosen]

On Thu, Oct 31, 2013 at 5:04 PM, Dave Reisner <d at falconindy.com> wrote:

> On Thu, Oct 31, 2013 at 04:51:38PM -0400, Ido Rosen wrote:
> > On Thu, Oct 31, 2013 at 4:45 PM, Dave Reisner <d at falconindy.com> wrote:
> >
> > > On Thu, Oct 31, 2013 at 08:32:49PM +0000, Jerome Leclanche wrote:
> > > > What about reusing the "filename" feature; if it sees multiple times
> > > > the same files it treats it as a mirror, eg.
> > > > "file.tar.gz::http://example.com/file.tar.gz"
> > > > "file.tar.gz::http://mirror.example.com/file.tar.gz"
> > > >
> > > > J. Leclanche
> > >
> > > This can't work. If the first source fails to download, makepkg will
> > > abort.
> > >
> >
> > What about just detecting if source is an array/list (keep current
> > behavior), or a dictionary/lookup table (new fancy mirror behavior)?  If
> > it's a dictionary/lookup table, then try all mirrors before failing a
> > source download.
> >
> > For examples of how to create lookup tables in bash, see
> >
> http://stackoverflow.com/questions/1494178/how-to-define-hash-tables-in-bash.
> ..
>
> bash4's associative arrays define a 1:1 mapping of string to string. You
> cannot have multiple elements in the "value." Not to mention that we
> won't be changing the format of the 'source' variable any time soon.
>

Okay, that leaves either Jerome's suggestion (if duplicate filenames are
detected, treat them as mirrors and don't fail/abort as long as one of them
works); supporting source() as a function instead of just as an array; or
creating a new variable that can handle mirrors...or doing nothing.