On Wed, Sep 2, 2015 at 2:17 PM, Jack Firth <jackhfi...@gmail.com> wrote: >> It's conceivable that the package info lookup API with the catalog >> could include "I want version X", but because new versions are defined >> to be backwards compatible, as long as the server has some version >> that's after X, then there is no reason to know what any old version >> has, since any client should be happy with any release >X. > > > There will be packages that aren't backwards compatible however. A simple > bug fix could break a workaround in another package, and a rearranging of > the internals of the package's collections could break packages depending on > the private implementation of the collections. One person's non-breaking > change may be another person's breaking change. This is going to happen, > there's no way to completely prevent it. What do we do when that happens? It > seems problematic to me if there's no easy way for package clients to lock > themselves into a particular version and rely on the package catalog to > guarantee they won't get anything else.
Package catalogs do not generally store any code, merely references to other people's code. There's no way they can guarantee that old tar-balls are still around. You can easily lock yourself in to a specific version by using the `raco pkg catalog-copy/catalog-archive` commands and distributing/saving the resulting catalog. Jay -- Jay McCarthy http://jeapostrophe.github.io "Wherefore, be not weary in well-doing, for ye are laying the foundation of a great work. And out of small things proceedeth that which is great." - D&C 64:33 -- You received this message because you are subscribed to the Google Groups "Racket Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-dev+unsubscr...@googlegroups.com. To post to this group, send email to racket-dev@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/racket-dev/CAJYbDanFVQtM0-p2sPTO0__A9P0Cztk8varfTtd3A%3DcOcKNceg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
