Re: Proposed new requirements for emacsen add-on packages
- To: Agustin Martin <agustin6martin@gmail.com>
- Cc: a2ps@packages.debian.org, acl2-emacs@packages.debian.org, anthy-el@packages.debian.org, anything-el@packages.debian.org, apel@packages.debian.org, auctex@packages.debian.org, auto-complete-el@packages.debian.org, auto-install-el@packages.debian.org, bbdb@packages.debian.org, bhl@packages.debian.org, bitmap-mule@packages.debian.org, c-sig@packages.debian.org, ccrypt@packages.debian.org, cdargs@packages.debian.org, cmake-data@packages.debian.org, cmuscheme48-el@packages.debian.org, commit-patch@packages.debian.org, coq@packages.debian.org, crypt++el@packages.debian.org, css-mode@packages.debian.org, cvc3-el@packages.debian.org, cxref-emacs@packages.debian.org, darcsum@packages.debian.org, ddskk@packages.debian.org, debian-el@packages.debian.org, develock-el@packages.debian.org, devscripts-el@packages.debian.org, dictem@packages.debian.org, dictionaries-common@packages.debian.org, dictionary-el@packages.debian.org, doxymacs@packages.debian.org, dpkg-de@defaultvalue.org, 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- Subject: Re: Proposed new requirements for emacsen add-on packages
- From: Rob Browning <rlb@defaultvalue.org>
- Date: Wed, 22 Jan 2014 12:51:27 -0600
- Message-id: <[🔎] 87a9ensvdc.fsf@trouble.defaultvalue.org>
- In-reply-to: <[🔎] 874n4vvp28.fsf@trouble.defaultvalue.org> (Rob Browning's message of "Wed, 22 Jan 2014 12:39:27 -0600")
- References: <[🔎] 87d2jnwhuh.fsf@trouble.defaultvalue.org> <CAHMXK7jrF_vPj=LxQHxEyBWKBsUuSNSVqeMUdBbYO-xe20eUHw@mail.gmail.com> <[🔎] 874n4vvp28.fsf@trouble.defaultvalue.org>
Rob Browning <rlb@defaultvalue.org> writes:
> However, to demonstrate why I'm beginning to think the current approach
> may be unworkable, consider the case where no emacsen-related packages
> are installed and someone runs this:
>
> apt-get install emacs24 add-on-depending-on-add-on-1 add-on-1
>
> What should happen if the postinsts fire in the order listed? When
> add-on-depending-on-add-on-1's postinst fires, add-on-1 isn't
> "installed", and so add-on-depending-on-add-on-1 should be skipped
> (though that may actually be broken right now), and then when add-on-1's
> postinst fires, it's not (currently) going to do anything about the
> other add-on because add-on-depending-on-add-on-1 isn't a dependency for
> add-on-1.
Oh, and of course, one way you might try to fix this is arrange to have
every add-on "install" every add-on that depends on it (and is ready).
So then every add-on would be trying to install both its upstream and
downstream dependencies. But even if we could do that sanely, we'd end
up running even more redundant installs.
--
Rob Browning
rlb @defaultvalue.org and @debian.org
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