From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on ip-172-31-65-14.ec2.internal X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 Path: eternal-september.org!reader01.eternal-september.org!aioe.org!oDTuUKkHPdLDp1cR2K7oFQ.user.46.165.242.91.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: yet another Ada web site? Date: Fri, 14 Oct 2022 12:05:00 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <8635bxht60.fsf@stephe-leake.org> <12faec32-1572-4df5-af28-be1c41083b9cn@googlegroups.com> <861qrch9j1.fsf@stephe-leake.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: gioia.aioe.org; logging-data="9030"; posting-host="oDTuUKkHPdLDp1cR2K7oFQ.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org"; User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.1 X-Notice: Filtered by postfilter v. 0.9.2 Content-Language: en-US Xref: reader01.eternal-september.org comp.lang.ada:64497 List-Id: On 2022-10-14 10:41, Fabien Chouteau wrote: > On Thursday, October 13, 2022 at 8:58:20 AM UTC+2, Dmitry A. Kazakov wrote: >> It seems so. Multiple versions at once are not supported. E.g. when you >> are working on two projects both dependent on different versions of >> another project: >> >> B -> A.1 >> C -> A.2 > > Yes of course, different crates can depend on different version of the same crate. It is about whether both A's can be installed and coexist on the same machine. >> Or even the same project, e.g. when doing some migration from one >> version to another. > > Not sure how you would do that? Link two different version of the same library in an executable? That's not going to work. Same as above. You have B.1 -> A.1 and B.* -> A.2. You want to install both A.1 and A.2 and work on B.* while checking on B.1. In the long gone time of common sense, a project code management system would use a virtual file system and map different parts of the projects graph onto a structure of folders arranged by versions. Today one would use something ugly like a virtual machine or incredibly ugly like a docker. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de