From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Lars Brinkhoff Newsgroups: gmane.emacs.devel Subject: Re: Recent change in master breaks async package update using paradox Date: Fri, 07 Apr 2017 09:40:39 +0200 Organization: nocrew Message-ID: <867f2w4qdk.fsf@molnjunk.nocrew.org> References: <86pogo4vty.fsf@molnjunk.nocrew.org> <8360igof0k.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1491550875 32640 195.159.176.226 (7 Apr 2017 07:41:15 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 7 Apr 2017 07:41:15 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 07 09:41:10 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cwOW4-0007gd-D7 for ged-emacs-devel@m.gmane.org; Fri, 07 Apr 2017 09:41:08 +0200 Original-Received: from localhost ([::1]:49402 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cwOWA-0007AV-80 for ged-emacs-devel@m.gmane.org; Fri, 07 Apr 2017 03:41:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60012) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cwOW1-000797-Ah for emacs-devel@gnu.org; Fri, 07 Apr 2017 03:41:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cwOVy-0002AY-78 for emacs-devel@gnu.org; Fri, 07 Apr 2017 03:41:05 -0400 Original-Received: from [195.159.176.226] (port=41764 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cwOVy-000298-0u for emacs-devel@gnu.org; Fri, 07 Apr 2017 03:41:02 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cwOVm-00061o-Ih for emacs-devel@gnu.org; Fri, 07 Apr 2017 09:40:50 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 25 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:sd1V90rT7iFE9XfbCaRzxQqFQ6U= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:213735 Archived-At: Eli Zaretskii wrote: >> The first lambda is executed in a subprocess emacs and throws the error >> (wrong-type-argument sequencep #s(package-desc swiper ... )) > > What is package-desc? If its value and/or its semantics are only > valid in the parent Emacs process, then it might not work to use it in > the subprocess. It's a defstruct in package.el. I interpret the error message as something probably creating a package-desc instance as a record. But then something else expects this instance to be a sequence. Possibly because it's compiled with the old cl-defstruct, or maybe it's using a function that worked with vector structures but now doesn't work with record structures. (If it's the latter, we should probably add something to cl-old-struct-compat-mode to make it work.) I think there are only a few functions that wants a sequence but not a record: elt, copy-sequence, concat, reverse, and sort. In the context of structure operations, the most likely function would be copy-sequence. The problem is finding this function call which is made in an async subprocess emacs. The backtrace we have only shows what's going in in the parent emacs.