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From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: "João Távora" <joaotavora@gmail.com>
Cc: emacs-devel <emacs-devel@gnu.org>
Subject: Re: Changing a cl-defstruct definition in a published package
Date: Fri, 13 Jul 2018 14:26:51 -0400	[thread overview]
Message-ID: <d1ccd3a1-baf4-72d7-0e9a-7d617a4136a7@gmail.com> (raw)
In-Reply-To: <CALDnm535TGNV0TYwY1jFq0ktCkiRC1fpg0EMSJ1w2-64sbN=Mw@mail.gmail.com>

On 2018-07-13 13:01, João Távora wrote:
> There's no way to fix the problem now without breaking backward compatibility because by now B's use of your accessor has been compiled into something that probably looks like an aref into an array.

Indeed, I suspected as much…

> So if you change your object layout in A, you break a compiled B.

Right, but I can't afford that.  Do you have ideas on workarounds?
Some other source-based package managers recompile dependencies on update.  IIUC, package.el doesn't do that.  Maybe it should?  But it sounds like a lot of extra work.

What would you do? I don't think breaking all packages that depend on FlyCheck is a valid option :/

Clément.
 




  parent reply	other threads:[~2018-07-13 18:26 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-12 20:12 Changing a cl-defstruct definition in a published package Clément Pit-Claudel
2018-07-13 17:01 ` João Távora
2018-07-13 17:38   ` Basil L. Contovounesios
2018-07-13 18:21     ` Clément Pit-Claudel
2018-07-13 18:26   ` Clément Pit-Claudel [this message]
2018-07-13 19:38     ` João Távora
2018-07-13 19:52       ` Clément Pit-Claudel
2018-07-13 20:40         ` Stefan Monnier
2018-07-13 21:07           ` Clément Pit-Claudel
2018-07-14  3:36             ` Stefan Monnier
2018-07-15  4:25               ` Clément Pit-Claudel
2018-07-15 13:11                 ` Stefan Monnier
2018-07-15 13:25                   ` Clément Pit-Claudel
2018-07-16  1:51                     ` Stefan Monnier
2018-07-30 21:52                       ` Clément Pit-Claudel
2018-07-30 22:49                         ` Stefan Monnier
2018-07-31  3:28                           ` Clément Pit-Claudel
  -- strict thread matches above, loose matches on Subject: below --
2018-07-19 20:27 Jake
2018-07-19 21:10 ` Stefan Monnier
2018-07-19 21:34   ` Jake

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