From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Suppressing native compilation (short and long term) Date: Mon, 03 Oct 2022 09:07:52 -0400 Message-ID: References: <87bkqxf1ij.fsf@tethera.net> <8335c9dkyf.fsf@gnu.org> <83tu4odez7.fsf@gnu.org> <871qrrpkgx.fsf@trouble.defaultvalue.org> <834jwnbi6c.fsf@gnu.org> <87mtafnun5.fsf@trouble.defaultvalue.org> <83sfk6ahty.fsf@gnu.org> <8735c6b0wo.fsf@gnus.org> <87y1ty9lha.fsf@gnus.org> <87lepym6ok.fsf@trouble.defaultvalue.org> <877d1i9h7k.fsf@gnus.org> <83edvqyr3q.fsf@gnu.org> <874jwl8e4p.fsf@gnus.org> <87ill16t3a.fsf@gnus.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="30440"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: Eli Zaretskii , rlb@defaultvalue.org, david@tethera.net, emacs-devel@gnu.org, akrl@sdf.org To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Oct 03 15:28:03 2022 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ofLUH-0007iy-H1 for ged-emacs-devel@m.gmane-mx.org; Mon, 03 Oct 2022 15:28:01 +0200 Original-Received: from localhost ([::1]:51242 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ofLUG-0001VE-JO for ged-emacs-devel@m.gmane-mx.org; Mon, 03 Oct 2022 09:28:00 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57264) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ofLAx-0000Yt-Ok for emacs-devel@gnu.org; Mon, 03 Oct 2022 09:08:14 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:40567) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ofLAv-0004oU-55; Mon, 03 Oct 2022 09:08:02 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 40468100138; Mon, 3 Oct 2022 09:07:55 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id B94661000DD; Mon, 3 Oct 2022 09:07:53 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1664802473; bh=uUXzCymCVFFEsbm/JUUbluZlerRTAWL1kQzmLwi7EWc=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=lQfm3y/2QHyQRBGSEaLNad/TG+UPJW0Jt2wBANjj4FUO1Z+s4LXdRqzT4183wJWkm WAdS/+HPAgFOAy/Cpb6WSbiS8n0wfFnL+PYiANbJxXnczSsq2ojZ4Qf/rxy/q8WNOr 0VwPnQ3IknGGZORTAxke8EEXF8uR3+0y0GX/YVEa9bw17EBxFHnAadZJogaek61HF6 gHvvGgyj24XNTgKb0Tx2t5kifC5IGzF08CK0Hv5rPBBK51/Pc4Y3r3uEuXughaI5Fw 9aTsb6xUTqd4aYMr8EFy3FqGd9RWdEFPXGJDzbxJ5MXWnpZpS/JNgBwzlMuVPyLRco c1j+B45exBKCw== Original-Received: from pastel (65-110-220-202.cpe.pppoe.ca [65.110.220.202]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id 7CCD5120A16; Mon, 3 Oct 2022 09:07:53 -0400 (EDT) In-Reply-To: <87ill16t3a.fsf@gnus.org> (Lars Ingebrigtsen's message of "Mon, 03 Oct 2022 13:32:09 +0200") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 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-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:296745 Archived-At: AFAICT so far I've heard of two reasons to "disable automatic native compilation": A) Avoid the "uncontrolled" (mostly in terms of *when* it happens) resource usage associated with it (e.g. battery). B) Avoid writing to $HOME. For (A), I think that (setq native-comp-deferred-compilation nil) seems perfectly sufficient (you can set it early in your (early) init file and if every blue moon some native compilation still happens because of a file loaded before that `setq` it shouldn't be a big deal). For (B) I seem to remember that it's a problem that goes a bit further than just native compilation (we've had bug reports about other files being silently written to ~/.emacs.d in the past and I'd be surprised if there aren't still many such cases, especially if we consider third party packages). So if avoiding all files under $HOME is important, I suspect the only reliable answer is to set $HOME elsewhere (and if you run Emacs under `su`, make sure you use `su -`). This said, we generally do make efforts to try and avoid writing silently to ~/.emacs.d, so maybe we should rethink our choice of ~/.emacs.d/eln-cache as the default location. E.g. maybe when run as root, we should write .eln files somewhere under something like /var/cache? And maybe when not run as root we should favor something underneath ~/.cache? Stefan "who finds the idea of running Emacs as root a bit scary"