That is in fact sometimes the case, yes. On Tue, Jul 23, 2019 at 5:25 PM Eduardo Costa <edu50...@gmail.com> wrote:
> Hi, Michael, I am trying your suggestion right now. I typed: > > ~/hs$ stack install yi --flag yi:vty --resolver nightly-2016-10-10 > > It seems that stack started by installing an old version of ghc. It is > interesting, but new versions of sbcl always work with older programs. Does > Haskell need old compiler versions for older programs? It seems that there > is no effort to keep backward compatibility. > > > Em ter, 23 de jul de 2019 às 11:06, Michael Snoyman <mich...@snoyman.com> > escreveu: > >> yi is not present in recent Stackage snapshots. I'm not particularly fond >> of Stack's behavior in this case; I'd rather it be more explicit about >> adding packages outside of a snapshot. In any event, if you check out the >> yi page on stackage.org[1], you can see that the last snapshot to >> include yi is 2016-10-10. You should have more success using that snapshot >> with: >> >> stack install --resolver nightly-2016-10-10 >> >> If someone wants to make it easier to install yi with Stack, adding it >> back to Stackage would be the easiest way. >> >> [1] https://www.stackage.org/package/yi >> >> On Tue, Jul 23, 2019 at 4:59 PM Eduardo Costa <edu50...@gmail.com> wrote: >> >>> I have been trying to use stack for some time without success. Is there >>> an easy way to configure stack so that I can install a few packages, just >>> to try Haskell on something non-trivial? I have stack in my machine >>> configured with the latest version of ghc: >>> >>> ~/hs$ stack ghc -- --version >>> The Glorious Glasgow Haskell Compilation System, version 8.6.5 >>> >>> The problem is that the only thing that I have managed to do with stack, >>> so far, is to discover the ghc version. For instance, I tried to install >>> the yi editor without success using many different methods, such as cabal. >>> Then I tried stack, thus: >>> >>> ~/hs$ stack install yi --flag yi:vty >>> >>> Stack starts complaining about dependences, and suggests that I add a an >>> extra-deps section to ~/.stack/global-project/stack.yaml, which I did. Then >>> it takes a long time performing downloads, until it gives up with an >>> unrecoverable error message: >>> >>> yi-core > >>> /private/var/folders/7d/mwm1yx257sg8z5y12h77cy440000gn/T/stack89879/yi-core-0.18.0/src/Yi/Buffer/Misc.hs:873:3-30: >>> error: >>> yi-core > • No instance for (Control.Monad.Fail.MonadFail >>> BufferM) >>> yi-core > arising from a do statement >>> yi-core > with the failable pattern ‘Just !ms’ >>> yi-core > • In a stmt of a 'do' block: Just !ms <- >>> getMarks =<< ask >>> yi-core > 873 | Just !ms <- getMarks =<< ask >>> yi-core > | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >>> >>> I tried stack with many other packages, such as Berp (a compiler for >>> Python), Pugs (implementation of Perl 6), haspy (Python), Jhc, rasa, >>> without any success. I wonder if Haskell has something that works >>> flawlessly and fast, as quicklisp or roswell in Common Lisp. For instance, >>> I installed the lem text editor with roswell just typing the line below: >>> >>> ~$ ros install cxxxr/lem >>> >>> I also installed compilers and interpreters for Python, Fortran, Prolog >>> (wamlisp) and other languages with equal facility, this time using >>> quicklisp. For instance: >>> >>> ~$ rlwrap sbcl >>> * (ql:quickload :cl-python) >>> >>> Very complex packages, such as Maxima Computer Algebra, install easily >>> in Common Lisp. Another thing that I consider very important is that sbcl >>> posts a new version of the compiler every month. All versions work >>> perfectly well, and old software works with all versions. I believe that I >>> am doing something very wrong with stack, cabal and Haskell, since any >>> moderately complex package simply does not install. >>> >>> >>> >>> >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "haskell-stack" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to haskell-stack+unsubscr...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/haskell-stack/307686d2-7605-4f86-9c86-1d5b483cbd47%40googlegroups.com >>> <https://groups.google.com/d/msgid/haskell-stack/307686d2-7605-4f86-9c86-1d5b483cbd47%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "haskell-stack" group. To unsubscribe from this group and stop receiving emails from it, send an email to haskell-stack+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/haskell-stack/CAKT9ecO1c6HPxQHQdyS5x01pAaYQjAjxRY%3D%2BtHz5JCqnSa-eEw%40mail.gmail.com.
