On 17-04-2015 20:47, Joe Hillenbrand wrote:
Sandboxes are really a bandaid and most tutorials don't promote them enough.
They *are* a bandaid, but a reasonably well-working one. Hopefully we'll an even more robust Nix-like approach soonish: http://www.well-typed.com/blog/2015/01/how-we-might-abolish-cabal-hell-part-... (there's a link to part 1 at the start if you haven't read that) That doesn't solve the diamond dependency problem, but hopefully there'll also be a solution for that at some future point in time (Backpack). I'll also note that I personally don't know of *any* software platform that has actually solved this problem entirely satisfactorily. On the JVM, OSGi gets close (at least in theory), but AFAICT it's a lot more complex that it (ideally) should be.
You can also still hit the multiple package versions issue in a sandbox.
Indeed, but my personal experience is that it actually doesn't happen very much in practice. (Anecdotal, I know.)
The lack of "cabal upgrade" is another big headache.
Meh. Speak for yourself! :) Personally I'm more interested in repeatable and consistent package installations rather than avoiding 30 minutes of 100% CPU usage once in a while. (Of course, priorities may vary and reasonable people can disagree!) Regards,