From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Bogatov Subject: Re: Multiple versions Date: Sun, 27 Dec 2015 13:41:09 +0300 Message-ID: <20151227104109.GA11215@sagulo> References: <20151227052600.GA32379@thebird.nl> <20151227092027.GA1958@sagulo> <20151227094832.GA6452@debian.fritz.box> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UlVJffcvxoiEqYs2" Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:56204) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aD8lR-0005VW-Hj for guix-devel@gnu.org; Sun, 27 Dec 2015 05:41:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aD8lQ-0004mI-J7 for guix-devel@gnu.org; Sun, 27 Dec 2015 05:41:25 -0500 Content-Disposition: inline In-Reply-To: <20151227094832.GA6452@debian.fritz.box> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org To: Andreas Enge Cc: guix-devel@gnu.org --UlVJffcvxoiEqYs2 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable * Andreas Enge [2015-12-27 10:48:32+0100] > On Sun, Dec 27, 2015 at 12:20:27PM +0300, Dmitry Bogatov wrote: > > Currently, I am at master branch. I want install parallel-20151122. > > But it is gone since 0877e. I propose to keep *all* versions, > > but just 'parallel' refer to latest. >=20 > This would be a nightmare to maintain. And what do you do about security > updates? If libfoo-1.1.7 fixes a critical security bug, who would backport > this to libfoo-1.0.x and libfoo-1.1.0 to libfoo-1.1.6? Drop old versions, or provide a warning to user in such emergency case. After all, user have right to believe, that this particular bug is not relevant to him > Then there is the combinatorial explosion. If you have 20 libraries in > 10 versions each that are needed to build a derived binary, then there > will be 10^20 possible combinations. Which of them would you like to > support? Build binaries with latest versions of libraries and compilers. > Our general policy is to keep only the latest version, except for special > cases where people see a point in keeping older versions (script language= s, > libraries like qt with two major versions supported in parallel, and so o= n). > What is your use case? If you want reproducibility, it could make sense > to simply stick to a given git commit. If you just need a particular older My use case is that I want to be able to install every version of any haskell library and every version of ghc for testing purposes. For example, I write code, that uses ghc-7.10 with lens-4.13. Will it work with ghc-7.6(Debian stable) and lens-4.1.2.1? This versions are important to me, but some other person may have another reference. Yes, there is combinatorics, but not too terrible. ~1000 packages, 4 ghc versions -> 4000 variables. Ah, and I do not propose to actually support, for example, ghc7.6-lens-4.13. If it fails to build, that it is dropped. Some kind of automatization and integration with hydra would be useful. PS. Let's also discuss Emacs 'load-path'. --=20 Accept: text/plain, text/x-diff Accept-Language: eo,en,ru X-Keep-In-CC: yes X-Web-Site: sinsekvu.github.io --UlVJffcvxoiEqYs2 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJWf8BFAAoJEHiL4BJUt/ANvLoP/jQxvL2rRYpUB1dCwzvCi+Jh GuQMNseUyLDxmyOJYZ7NT7jHE8PAbN7iy8SvoIBVV3jgVAk65pDSoRcJLqRq0tkI idewBrgB9R6r158wonsiAUvZDowWWpBf+9Lo5rq0t67P4PjkG6rhs09so63Qd2BS GMmUZdU8DHNGK8PqN+qic+LhhI9I50UQL6KXSZjsYWYuXktFL9YnhVXNySV6HRqY LbxTJd7xz5WIvWDyM+QWk3L3jgx+IkcHsCQJQ7eXA+rCW4vM4q1m2IwE+K8GLYMe fSq6IefAaU7Pqq7LivTzVZgtUq4SYodfYkBk25mAOmDJNmsDYp8ln6d1/nODb/CZ mT6rwsm1m2ekK4/XW5DTN6liHcVj84PDuTIxspaenxmeQewtufTLpUEE9iKAsk9Y U0zf+tVqLJRxUbjdVlBJlrvt96DD77RVrG9AM18uzeuORGj70p87ZoDAsZQh77tx 9rP4MkcOR5T5Hr7g9U1XJ8gSFXjam+W5WgHB+eZrWoFvySqgJH4XkA+ERJ+GI27k tIoJOAkqIxwsEBP/2K6R2XnceyACxQgGd45/h3QukkghLV31RtqNhYe/F8afPzm1 kFNdwqSn8dcAN3K1Px+RDSh/zZqvfcxRbE/+iRmFaDBTn5Efhqx1wSDkC3IASJnO ON2WFOVvtM+HvKSoJ04p =4hzo -----END PGP SIGNATURE----- --UlVJffcvxoiEqYs2--