From: Tim Cross <theophilusx@gmail.com>
To: Kaushal Modi <kaushal.modi@gmail.com>
Cc: Emacs developers <emacs-devel@gnu.org>
Subject: Re: Package.el and specifying alternative dependencies
Date: Wed, 12 Apr 2017 17:35:57 +1000 [thread overview]
Message-ID: <CAC=50j_nFMxx=tLxc1UdPC6FrdRFXxbhxukF=SPOiL-NV6XzrA@mail.gmail.com> (raw)
In-Reply-To: <CAFyQvY27g_TbZPUCcV6uPS36vspD0ooLWfwou0EDPZ9C3LvpxQ@mail.gmail.com>
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Thanks for the update.
Tim
On 12 April 2017 at 08:37, Kaushal Modi <kaushal.modi@gmail.com> wrote:
> Hi Tim,
>
> I just discovered a bug in this advice.. I needed to fix the order of
> packages in the new-ret list that is returned. The bug was that the order
> of pkgs in new-ret was flipped compared to that in orig-ret.. so I needed
> to flip it back using reverse.
>
> Here is the fixed function:
>
> ;; http://emacs.stackexchange.com/a/26513/115
> (defun modi/package-dependency-check-ignore (orig-ret)
> "Remove the `black listed packages' from ORIG-RET.
>
> Packages listed in the let-bound `pkg-black-list' will not be
> auto-installed
> even if they are found as dependencies.
>
> It is known that this advice is not effective when installed packages
> asynchronously using `paradox'. Below is effective on synchronous
> package installations."
> (let ((pkg-black-list '(org))
> new-ret
> pkg-name)
> (dolist (pkg-struct orig-ret)
> (setq pkg-name (package-desc-name pkg-struct))
> (if (member pkg-name pkg-black-list)
> (message (concat "Package `%s' will not be installed. "
> "See `modi/package-dependency-check-ignore'.")
> pkg-name)
> (push pkg-struct new-ret)))
> ;; Tue Apr 11 17:48:16 EDT 2017 - kmodi
> ;; It's *very* critical that the order of packages stays the same in
> NEW-RET
> ;; as in ORIG-RET. The `push' command flips the order, so use `reverse'
> ;; to flip the order back to the original.
> ;; Without this step, you will get errors like below when installing
> ;; packages with dependencies:
> ;; Debugger entered--Lisp error: (error "Unable to activate package
> ‘nim-mode’.
> ;; Required package ‘flycheck-28’ is unavailable")
> (setq new-ret (reverse new-ret))
> new-ret))
> (advice-add 'package-compute-transaction :filter-return
> #'modi/package-dependency-check-ignore)
>
> On Sat, Mar 4, 2017 at 6:44 PM Tim Cross <theophilusx@gmail.com> wrote:
>
>> Nice and useful idea.
>>
>> thanks
>>
>> On 5 March 2017 at 09:46, Kaushal Modi <kaushal.modi@gmail.com> wrote:
>>
>> I have this in my config which works very well. I use this just for org
>> :) I build org from its master branch, so I do not want the dependency
>> check to auto-install older versions from Elpa.
>>
>> ;; http://emacs.stackexchange.com/a/26513/115
>> (defun modi/package-dependency-check-ignore (orig-ret)
>> "Remove the `black listed packages' from ORIG-RET.
>> Packages listed in the let-bound `pkg-black-list' will not be
>> auto-installed
>> even if they are found as dependencies.
>> It is known that this advice is not effective when installed packages
>> asynchronously using `paradox'. Below is effective on synchronous
>> package installations."
>> (let ((pkg-black-list '(org))
>> new-ret
>> pkg-name)
>> (dolist (pkg-struct orig-ret)
>> (setq pkg-name (package-desc-name pkg-struct))
>> (if (member pkg-name pkg-black-list)
>> (message (concat "Package `%s' will not be installed. "
>> "See `modi/package-dependency-check-ignore'.")
>> pkg-name)
>> ;; (message "Package to be installed: %s" pkg-name)
>> (push pkg-struct new-ret)))
>> new-ret))
>> (advice-add 'package-compute-transaction :filter-return
>> #'modi/package-dependency-check-ignore)
>>
>> https://github.com/kaushalmodi/.emacs.d/blob/master/setup-packages.el
>>
>> On Thu, Mar 2, 2017 at 7:41 PM Tim Cross <theophilusx@gmail.com> wrote:
>>
>> Is there a way to specify alternative dependencies in a package?
>>
>> Situation: installing a package is resulting in an additional package
>> being installed even though the dependencies for the package have already
>> been satisfied by another package. This results in two packages being
>> installed which provide overlapping functionality.
>>
>> Example. I have installed org-plus-contrib. I then install elfeed-org,
>> which has a dependency on org. This results in the org package being
>> installed, but org is already installed as part of the org-plus-contrib
>> package.
>>
>> I'm trying to work out if this is a problem with how dependencies are
>> defined in the elfeed-org package or is it a problem with how
>> org-plus-conrib is specifying what dependency it satisfies? Need to know in
>> order to determine where this issue needs to be logged.
>>
>> --
>>
>> Kaushal Modi
>>
>>
>>
>>
>> --
>> regards,
>>
>> Tim
>>
>> --
>> Tim Cross
>>
>> --
>
> Kaushal Modi
>
--
regards,
Tim
--
Tim Cross
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next prev parent reply other threads:[~2017-04-12 7:35 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-03 0:41 Package.el and specifying alternative dependencies Tim Cross
2017-03-04 21:57 ` Mark Oteiza
2017-03-04 22:32 ` Tim Cross
2017-03-04 22:46 ` Kaushal Modi
2017-03-04 23:44 ` Tim Cross
2017-04-11 22:37 ` Kaushal Modi
2017-04-12 7:35 ` Tim Cross [this message]
2017-04-12 7:44 ` Thien-Thi Nguyen
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