[arch-haskell] Re: [extra] haskell-parallel
simons at cryp.to
Sat Oct 12 07:37:39 UTC 2013
> Hmm, what we would need is so that when haskell-pandoc is being built
> it's PKGFILE is updated so that it requires haskell-http 4000.0.9
> exactly. Then an attempt to uninstall haskell-hp-http later would
> require an uninstallation of haskell-pandoc too.
fortunately, Pacman does that already:
| # pacman -R haskell-http
| checking dependencies...
| error: failed to prepare transaction (could not satisfy dependencies)
| :: haskell-pandoc: requires haskell-http>=4000.0.5
It's not possible to remove a package that another installed package
It's a different story, though, when a prerequisite is updated. Suppose
that pandoc has been installed. Now, an update of haskell-http shows up
an AUR. Pacman will perform that update, and it will break pandoc in the
process. This is why we have to bump pandoc's $pkgrel at the same time
we publish the update of haskell-http. In other words, an update of
package X requires $pkgrel bumps of all other packages that directly or
indirectly depend on X.
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