From patchwork Wed May 20 21:47:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Ludovic_Court=C3=A8s?= X-Patchwork-Id: 22236 Return-Path: X-Original-To: patchwork@mira.cbaines.net Delivered-To: patchwork@mira.cbaines.net Received: by mira.cbaines.net (Postfix, from userid 113) id 7554827BBE3; Wed, 20 May 2020 22:48:18 +0100 (BST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on mira.cbaines.net X-Spam-Level: X-Spam-Status: No, score=-2.9 required=5.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL autolearn=unavailable autolearn_force=no version=3.4.2 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mira.cbaines.net (Postfix) with ESMTP id 25E9D27BBE1 for ; Wed, 20 May 2020 22:48:18 +0100 (BST) Received: from localhost ([::1]:38554 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jbWZV-0003jv-HF for patchwork@mira.cbaines.net; Wed, 20 May 2020 17:48:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51428) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jbWZG-0003Ox-MF for guix-patches@gnu.org; Wed, 20 May 2020 17:48:02 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:43003) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jbWZG-0003NP-Cu for guix-patches@gnu.org; Wed, 20 May 2020 17:48:02 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jbWZG-00063S-BW for guix-patches@gnu.org; Wed, 20 May 2020 17:48:02 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#41425] [PATCH 2/5] channels: 'latest-channel-instances' doesn't leak internal state. Resent-From: Ludovic =?utf-8?q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Wed, 20 May 2020 21:48:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 41425 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: 41425@debbugs.gnu.org Cc: Ludovic =?utf-8?q?Court=C3=A8s?= Received: via spool by 41425-submit@debbugs.gnu.org id=B41425.159001126523209 (code B ref 41425); Wed, 20 May 2020 21:48:02 +0000 Received: (at 41425) by debbugs.gnu.org; 20 May 2020 21:47:45 +0000 Received: from localhost ([127.0.0.1]:54540 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jbWYz-000629-GC for submit@debbugs.gnu.org; Wed, 20 May 2020 17:47:45 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43942) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jbWYx-00061k-7A for 41425@debbugs.gnu.org; Wed, 20 May 2020 17:47:43 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:59454) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jbWYr-0003L9-TZ; Wed, 20 May 2020 17:47:37 -0400 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=56656 helo=gnu.org) by fencepost.gnu.org with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jbWYr-0007cZ-9V; Wed, 20 May 2020 17:47:37 -0400 From: Ludovic =?utf-8?q?Court=C3=A8s?= Date: Wed, 20 May 2020 23:47:22 +0200 Message-Id: <20200520214725.2437-2-ludo@gnu.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200520214725.2437-1-ludo@gnu.org> References: <20200520214725.2437-1-ludo@gnu.org> MIME-Version: 1.0 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+patchwork=mira.cbaines.net@gnu.org Sender: "Guix-patches" X-getmail-retrieved-from-mailbox: Patches * guix/channels.scm (latest-channel-instances): Remove 'previous-channels' argument. Introduce 'loop' and use it. --- guix/channels.scm | 67 +++++++++++++++++++++++------------------------ 1 file changed, 33 insertions(+), 34 deletions(-) diff --git a/guix/channels.scm b/guix/channels.scm index f0174de767..e0a7a84f55 100644 --- a/guix/channels.scm +++ b/guix/channels.scm @@ -231,10 +231,9 @@ result is unspecified." #:select? (negate dot-git?)))) (channel-instance channel commit checkout)))) -(define* (latest-channel-instances store channels #:optional (previous-channels '())) +(define* (latest-channel-instances store channels) "Return a list of channel instances corresponding to the latest checkouts of -CHANNELS and the channels on which they depend. PREVIOUS-CHANNELS is a list -of previously processed channels." +CHANNELS and the channels on which they depend." ;; Only process channels that are unique, or that are more specific than a ;; previous channel specification. (define (ignore? channel others) @@ -245,38 +244,38 @@ of previously processed channels." (not (or (channel-commit a) (channel-commit b)))))))) - ;; Accumulate a list of instances. A list of processed channels is also - ;; accumulated to decide on duplicate channel specifications. - (define-values (resulting-channels instances) - (fold2 (lambda (channel previous-channels instances) - (if (ignore? channel previous-channels) - (values previous-channels instances) - (begin - (format (current-error-port) - (G_ "Updating channel '~a' from Git repository at '~a'...~%") - (channel-name channel) - (channel-url channel)) - (let ((instance (latest-channel-instance store channel))) - (let-values (((new-instances new-channels) - (latest-channel-instances - store - (channel-instance-dependencies instance) - previous-channels))) - (values (append (cons channel new-channels) - previous-channels) - (append (cons instance new-instances) - instances))))))) - previous-channels - '() ;instances - channels)) + (let loop ((channels channels) + (previous-channels '())) + ;; Accumulate a list of instances. A list of processed channels is also + ;; accumulated to decide on duplicate channel specifications. + (define-values (resulting-channels instances) + (fold2 (lambda (channel previous-channels instances) + (if (ignore? channel previous-channels) + (values previous-channels instances) + (begin + (format (current-error-port) + (G_ "Updating channel '~a' from Git repository at '~a'...~%") + (channel-name channel) + (channel-url channel)) + (let ((instance (latest-channel-instance store channel))) + (let-values (((new-instances new-channels) + (loop (channel-instance-dependencies instance) + previous-channels))) + (values (append (cons channel new-channels) + previous-channels) + (append (cons instance new-instances) + instances))))))) + previous-channels + '() ;instances + channels)) - (let ((instance-name (compose channel-name channel-instance-channel))) - ;; Remove all earlier channel specifications if they are followed by a - ;; more specific one. - (values (delete-duplicates instances - (lambda (a b) - (eq? (instance-name a) (instance-name b)))) - resulting-channels))) + (let ((instance-name (compose channel-name channel-instance-channel))) + ;; Remove all earlier channel specifications if they are followed by a + ;; more specific one. + (values (delete-duplicates instances + (lambda (a b) + (eq? (instance-name a) (instance-name b)))) + resulting-channels)))) (define* (checkout->channel-instance checkout #:key commit