From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2117.outbound.protection.outlook.com [40.107.92.117]) by sourceware.org (Postfix) with ESMTPS id C39B6386F038 for ; Tue, 1 Sep 2020 12:09:22 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org C39B6386F038 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=lNLBNgM9xcLHKi1AzMMd5FPzxAYy7RNH458bqYWJFl19lhwOaZo/cbwKroVsyd2uMwb0D3uqhQK3x03qFhiTQctqSz/85IrdewQp+PE50OWIJDtT9Dtk1A+H8Ebg4zfeJgoH53fT8ylNNbmvisKP+JN16bLqAy8650Zg1W76kW5E0b/iENGOnfLWMd2fp/6KjQ/ddQoZqccAuuoq0U2BXxhdueUwqTISJFldgSqZepTXZqHoWX9olyXWToihGMvgaoNAYZU8j1ZzKn0FsZR/UZYJKNYppeKuDN19pxoLGSuf/pGaiRNi5qqYGjtqns4NG3l3C/ToseGiDK8XELAcRw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/ySYv0KdCUytU5xUVmeDsTg7+VgnHOcG4sB5uagj3+8=; b=Yzp57F/XxogXH3isVvvD9LRkpNnvtGkZBZI83VGgOHKcceQWGvZcA6jTmvEpw9QFZLsCZHteiCXdKGliqmxFkch277uqtyZpHMeYfjKKpeZqtZkEkSxBY540MFFvzLdP7M2dgoR2utOx3uSfX+BRE3ww2ZQccTi6ogLxQh/Wf2AQnprTmXhWS18Lr971I4fFbKZDu/Eb3pkeqFUs8ORIZ5bOTILgrQTscbYpSiarSH24vv7FGXf46leBAraYIxUpdzqo/yKiHa4hUkTTgwTQ8YY4TP6xW6vbVSHjDST38X9sEfDfE7dVgxWo3nBPjA7QB/2I8bShKDWx0ZOH+0Tvhg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cornell.edu; dmarc=pass action=none header.from=cornell.edu; dkim=pass header.d=cornell.edu; arc=none Received: from MN2PR04MB6176.namprd04.prod.outlook.com (2603:10b6:208:e3::13) by MN2PR04MB5759.namprd04.prod.outlook.com (2603:10b6:208:38::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3326.24; Tue, 1 Sep 2020 12:09:21 +0000 Received: from MN2PR04MB6176.namprd04.prod.outlook.com ([fe80::c144:d206:c369:af44]) by MN2PR04MB6176.namprd04.prod.outlook.com ([fe80::c144:d206:c369:af44%7]) with mapi id 15.20.3326.025; Tue, 1 Sep 2020 12:09:21 +0000 Subject: Re: [ANNOUNCEMENT] unison2.48-2.48.4-2 (Warning: possible breakage) To: cygwin@cygwin.com References: <0e456fd0-0beb-6f04-40d7-836ed8b64612@cornell.edu> From: Ken Brown Message-ID: Date: Tue, 1 Sep 2020 08:09:19 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-ClientProxiedBy: CH2PR14CA0029.namprd14.prod.outlook.com (2603:10b6:610:60::39) To MN2PR04MB6176.namprd04.prod.outlook.com (2603:10b6:208:e3::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from 255.255.255.255 (255.255.255.255) by CH2PR14CA0029.namprd14.prod.outlook.com (2603:10b6:610:60::39) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3326.19 via Frontend Transport; Tue, 1 Sep 2020 12:09:20 +0000 X-Originating-IP: [68.175.129.7] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 6b33c656-1f1e-4402-1018-08d84e6fdbe6 X-MS-TrafficTypeDiagnostic: MN2PR04MB5759: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:10000; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: OREP7TUxeInVDKp2SjzttrYXMshVyD0dz7YRLVD8R238fuSGkDEf/aeNFPloj32JpNoarv96V0x6o9yGUcc8kK+gc3eTCrbN1Za6RjB/TiCh5vUWC9teidfKFTsJNxCHb+qMPcpv0emd7K8DKhwHm0L5SAvDjjKac74Qk1gZMckYiojLZN8g4pJb0kqFVngUivQnDRpZaBwVuPiNKEll8VwJQq/ZFuQsSpEkSaZzQfyDCPOkwsxOzHrCUHvc9yRQ+ett4JER3/wKkcxw7jroVylXMiT3bubGoLdETSiEKJ3GNuqlKWIgc/nid/DubMW4+2RKjZmY3kN9qegdxEzyLgrO/aiEC+e/olIwqynM0x5jaHblF5SbCc4gROzRDOKgPj2x1+uUNTpTvHJRdTmXvU51UGdVdrSjUJwkYdK/3oi+dWY76YSjdVAHOnm6AL2AAdUZNe9dHaZz4rrrp4jEwg== X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MN2PR04MB6176.namprd04.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(376002)(346002)(39860400002)(396003)(136003)(366004)(6916009)(186003)(6486002)(66946007)(316002)(31696002)(786003)(5660300002)(66556008)(66476007)(16576012)(26005)(83380400001)(478600001)(31686004)(2616005)(75432002)(36756003)(8936002)(956004)(8676002)(86362001)(52116002)(2906002)(53546011)(43740500002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: cornell.edu X-MS-Exchange-CrossTenant-Network-Message-Id: 6b33c656-1f1e-4402-1018-08d84e6fdbe6 X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB6176.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Sep 2020 12:09:21.4007 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 5d7e4366-1b9b-45cf-8e79-b14b27df46e1 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 7FPrH0wW+QHHX1ZLb9xlaQiDa/HNznmUltBoj6OQxihObm1Rq14e7SKuBrDPoeCgt0DL+2kZytioSkWd6rcc/w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB5759 X-Spam-Status: No, score=-4.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, MSGID_FROM_MTA_HEADER, NICE_REPLY_A, RCVD_ILLEGAL_IP, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Sep 2020 12:09:29 -0000 On 8/31/2020 8:39 PM, Andrew Schulman via Cygwin wrote: >>> There is unfortunately another layer of incompatibility in Unison: Two >>> Unison executables are only compatible if they were built with the same >>> version of OCaml. >> >> What a mess! > > Glad you understand :) > >> Would you consider embedding the OCaml version in the package name >> as suggested by the Debian maintainer >> (http://lists.seas.upenn.edu/pipermail/unison-hackers/2020-August/001975.html)? >> Thus unison2.48-2.48.4-1 would be replaced by something like >> unison2.48+4.04.1... and unison2.48-2.48.4-2 would be replace by something like >> unison2.48+4.08.1.... That way people who are happy with unison2.48-2.48.4-1 >> can keep using it without being pestered by setup to update. > > Yes, I could do that. I was hoping to avoid it, but it may be the only realistic > solution. > > It may be mainly Unison 2.48 that's affected, and maybe also 2.51 and the > forthcoming 2.52. I guess that very few people are still using the older > versions, and if they are they don't want any changes now. > >> FWIW, here's my situation, which is probably not typical. When you released >> unison2.48-2.48.4-1 a few years ago, it was incompatible with the Linux server >> that I sync with. So I simply built OCaml and unison myself on that server, >> using the same versions that you used, and installed unison in my own ~/bin >> directory. >> >> I could do that again, now using OCaml 4.08.1. But I'd much rather just keep my >> current arrangement, without having setup try to update unison2.48 every time I >> run it. > > Thanks, that's helpful to know. Your situation might not be unusual, I don't > know. For all I know, you and I are the only Cygwin Unison users. > > So was unison2.48-2.48.4-1 built with OCaml 4.04.1? I don't remember, and I'm > not sure how to tell. I just checked a Cygwin snapshot from around the time unison2.48-2.48.4-1 was built (http://ctm.crouchingtigerhiddenfruitbat.org/pub/cygwin/circa/64bit/2017/02/22/131407/index.html), and it looks like the current version of Cygwin's OCaml was 4.02.3 at the time. I mentioned 4.04.1 above because that's the version I built for Linux. So maybe the crucial thing is that it was pre-4.08.1. Ken