From debbugs-submit-bounces@debbugs.gnu.org Wed May 10 06:07:20 2017 Received: (at 25879) by debbugs.gnu.org; 10 May 2017 10:07:20 +0000 Received: from localhost ([127.0.0.1]:35093 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d8OWd-0001UF-TC for submit@debbugs.gnu.org; Wed, 10 May 2017 06:07:20 -0400 Received: from sender-of-o51.zoho.com ([135.84.80.216]:21047) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d8OWb-0001U6-Rw for 25879@debbugs.gnu.org; Wed, 10 May 2017 06:07:18 -0400 Received: from localhost (141.80.148.89 [141.80.148.89]) by mx.zohomail.com with SMTPS id 1494410833804379.5716297310554; Wed, 10 May 2017 03:07:13 -0700 (PDT) References: <87shn12p2i.fsf@gnu.org> <87k28180ob.fsf@gnu.org> <87d1dskjdh.fsf@gnu.org> <8737eosvgb.fsf@gnu.org> <20170307212411.GA29363@mail.thebird.nl> <87bmr1i6l3.fsf@elephly.net> <87inl9gpvu.fsf@gnu.org> User-agent: mu4e 0.9.18; emacs 25.2.1 From: Ricardo Wurmus To: Roel Janssen Subject: Re: bug#25879: [PATCH] gnu: Add LLVM and CLANG 3.9.1. In-reply-to: <87inl9gpvu.fsf@gnu.org> X-URL: https://elephly.net X-PGP-Key: https://elephly.net/rekado.pubkey X-PGP-Fingerprint: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC Date: Wed, 10 May 2017 12:07:10 +0200 Message-ID: <877f1phvox.fsf@elephly.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-ZohoMailClient: External X-Spam-Score: -1.8 (-) X-Debbugs-Envelope-To: 25879 Cc: 25879@debbugs.gnu.org, Pjotr Prins , Ludovic =?utf-8?Q?Court=C3=A8?= =?utf-8?Q?s?= 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: -1.8 (-) Roel Janssen writes: > Ricardo Wurmus writes: > >> Pjotr Prins writes: >> >>> On Tue, Mar 07, 2017 at 09:06:28PM +0100, Ludovic Courtès wrote: >>>> > Well, actually, this is just the latest release, so maybe I should >>>> > update the 3.8.1 recipe to3.9.1 instead. WDYT? >>>> >>>> If the other users of LLVM and Clang (as per ‘guix refresh -l llvm’) can >>>> cope with it, upgrading sounds better indeed. Could you check if that >>>> is the case? >>> >>> With LLVM it is probably a good idea to keep the major versions as >>> packages tend to lag after latest. Many compiler writers are a bit >>> behind and sometimes people want to use older compilers (like with >>> Julia). >> >> I agree. >> >> @Roel: I see that this patch hasn’t been pushed yet. Is there anything >> missing or was it just forgotten? > > I think the idea was to upgrade, instead of have this newer version next > to the current version. The upgrade involves a lot of rebuilding, and I > am stuck at compiling 'dub' with 3.9.1. > > If we can instead apply this patch as (having both 3.8.1 and 3.9.1), we > can push it, and after that add the darktable patch as well. I think it’s fine to have multiple versions of LLVM + Clang around, especially considering that in my experience many dependent projects won’t build with later versions without adjustments. (RStudio, for example, still insists on the oldest version of Clang that we offer, and it crashes with later versions.) It would be good to keep an eye on this, though, to make sure that we don’t provide outdated versions that have no users and no maintainer. -- Ricardo GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC https://elephly.net