From unknown Thu Jun 19 14:06:09 2025 X-Loop: help-debbugs@gnu.org Subject: bug#72339: Progress bars should not go backwards ever Resent-From: "Zack Weinberg" Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sun, 28 Jul 2024 16:04:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 72339 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 72339@debbugs.gnu.org X-Debbugs-Original-To: bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.172218259718694 (code B ref -1); Sun, 28 Jul 2024 16:04:01 +0000 Received: (at submit) by debbugs.gnu.org; 28 Jul 2024 16:03:17 +0000 Received: from localhost ([127.0.0.1]:44283 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1sY6Me-0004rQ-J3 for submit@debbugs.gnu.org; Sun, 28 Jul 2024 12:03:16 -0400 Received: from lists.gnu.org ([209.51.188.17]:44602) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1sY6Mc-0004rD-0A for submit@debbugs.gnu.org; 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Sun, 28 Jul 2024 12:02:59 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.11.0-alpha0-582-g5a02f8850-fm-20240719.002-g5a02f885 MIME-Version: 1.0 Message-Id: <3485c6ca-deaf-47b5-85e3-15f7d1baab7d@app.fastmail.com> Date: Sun, 28 Jul 2024 16:02:38 +0000 From: "Zack Weinberg" Content-Type: text/plain Received-SPF: pass client-ip=103.168.172.152; envelope-from=zack@owlfolio.org; helo=fhigh1-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.6 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.6 (--) I have noticed that when Guix is building derivations, the progress bar for what it's currently building will often reverse to somewhere between 5% and 50% after reaching 100%. In some cases, such as for guix-packages- base.drv and guix-packages.drv, this happens several dozen times before the build is actually complete. This is a bug. Progress bars should *never* go backward. It is actually better to have no progress bar at all than to have one that gives a misleading sense of how close the operation is to completion. zw