Depends on the operating system. And should be answered at https://www.haskell.org/downloads.
For what seems to be your specific situation (OS X with Homebrew), the commit discussion you linked to contains a comment that appears to answer the question: https://github.com/elm-lang/elm-platform/commit/f46c95cf826651c56cf11388148df4406a834ee8#commitcomment-18102434 2016-08-30 19:57 GMT+02:00 suttlecommakevin <[email protected]>: > Right, and how does one obtain GHC 7.10? > > On Tuesday, August 30, 2016 at 1:51:50 PM UTC-4, Janis Voigtländer wrote: >> >> GHC 7.10.x + whatever cabal comes with that + Elm 0.17.1 >> >> 2016-08-30 19:44 GMT+02:00 suttlecommakevin <[email protected]>: >> >>> Thanks. I still am not able to contribute to elm-lang.org without a >>> proper set up. >>> In order to develop, how *exactly *should and which versions of, elm, >>> ghc, and cabal be installed most reliably? >>> >>> >>> >>> >>> On Tuesday, August 30, 2016 at 1:39:07 PM UTC-4, Janis Voigtländer wrote: >>>> >>>> I tried 0.16, because that’s what’s in the README*. Others have been >>>> scolded for not reading the instructions closely. >>>> >>>> In all fairness, the README of https://github.com/elm-lang/elm-lang.org >>>> says to use 0.17, not 0.16. >>>> >>>> >>>> 2016-08-30 19:30 GMT+02:00 suttlecommakevin <[email protected]>: >>>> >>>>> >>>>> - Yes, 8.0.1 as Richard pointed out in that commit. >>>>> - I tried 0.16, because that's what's in the README*. Others have >>>>> been scolded for not reading the instructions closely. >>>>> - Yes, I also tried 0.17.1, and that failed as well. >>>>> >>>>> For me, what is needed is a more explicit set of instructions than >>>>> > Before getting Haskell Platform, make sure it is going to give you >>>>> these things <https://www.haskell.org/platform/contents.html>. >>>>> >>>>> As someone who has never used Haskell, and is just getting going with >>>>> Elm, I would rather see explicit, tested, instructions. >>>>> *I tried to make a minor fix to these, but there are some odd errors >>>>> in Travis. Maybe these will help shed some light. >>>>> >>>>> https://travis-ci.org/elm-lang/elm-platform/jobs/156272879#L754-L794 >>>>> https://travis-ci.org/elm-lang/elm-platform/jobs/156272879#L861 >>>>> >>>>> >>>>> >>>>> >>>>> On Tuesday, August 30, 2016 at 12:57:41 PM UTC-4, Janis Voigtländer >>>>> wrote: >>>>>> >>>>>> >>>>>> - That does not yet tell me which version of GHC you have. I >>>>>> could guess that 8.0.1, but is that the case? >>>>>> - Why is it that you try to install 0.16 of the platform in your >>>>>> gist, rather than 0.17 or better yet 0.17.1? >>>>>> - It is not clear that GHC 8.0.1 will fail you (with 0.17.1 of >>>>>> elm-platform). Have you tried? >>>>>> >>>>>> >>>>>> >>>>>> 2016-08-30 18:53 GMT+02:00 suttlecommakevin <[email protected]>: >>>>>> >>>>>>> I'm on Mac. I installed *ghc* via brew cask install haskell-platform >>>>>>> . >>>>>>> >>>>>>> It's not clear where or how to obtain GHC < 8.0.1 reliably or >>>>>>> consistently. >>>>>>> https://github.com/elm-lang/elm-platform/commit/f46c95cf8266 >>>>>>> 51c56cf11388148df4406a834ee8 >>>>>>> >>>>>>> >>>>>>> On Tuesday, August 30, 2016 at 12:49:38 PM UTC-4, Joey Eremondi >>>>>>> wrote: >>>>>>>> >>>>>>>> @suttlecommakevin Are you trying to use Elm from Hackage, or the >>>>>>>> Elm platform? Hackage elm is woefully out of date. >>>>>>>> >>>>>>>> On Tue, Aug 30, 2016 at 9:38 AM, Janis Voigtländer < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> You don't feel like telling us which GHC version you are trying to >>>>>>>>> do this with? >>>>>>>>> >>>>>>>>> 2016-08-30 18:11 GMT+02:00 suttlecommakevin <[email protected] >>>>>>>>> >: >>>>>>>>> >>>>>>>>>> I get missing deps, but because of conflicts that were rejected. >>>>>>>>>> >>>>>>>>>> https://gist.github.com/kevinSuttle/a867b0d2048f6f6c6f646964 >>>>>>>>>> 061ec3c1 >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Thursday, August 14, 2014 at 11:19:13 PM UTC-4, Evan Cameron >>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>> I've installed elm on arch using a cabal sandbox and the cabal >>>>>>>>>>> install methods. I've added the /bin directory to my path so >>>>>>>>>>> commands like >>>>>>>>>>> elm-get run from everywhere. >>>>>>>>>>> >>>>>>>>>>> I'm trying to build the elm-lang.org locally but cabal >>>>>>>>>>> configure fails >>>>>>>>>>> >>>>>>>>>>> ➜ elm-lang.org git:(stable) elm-get install >>>>>>>>>>> Installing all declared dependencies... >>>>>>>>>>> Cloning repo johnpmayer/elm-webgl >>>>>>>>>>> Checking out version 0.1 >>>>>>>>>>> Cloning repo johnpmayer/elm-linear-algebra >>>>>>>>>>> Checking out version 1.0 >>>>>>>>>>> Success! >>>>>>>>>>> ➜ elm-lang.org git:(stable) cabal configure >>>>>>>>>>> Resolving dependencies... >>>>>>>>>>> Configuring elm-website-0.1.0.2... >>>>>>>>>>> cabal: At least the following dependencies are missing: >>>>>>>>>>> Elm >=0.12, >>>>>>>>>>> HTTP -any, >>>>>>>>>>> aeson -any, >>>>>>>>>>> blaze-html -any, >>>>>>>>>>> blaze-markup -any, >>>>>>>>>>> cmdargs -any, >>>>>>>>>>> mtl -any, >>>>>>>>>>> snap-core -any, >>>>>>>>>>> snap-server -any, >>>>>>>>>>> unordered-containers -any >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> how is it even possible that elm-get ran if Elm is missing? >>>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>> Google Groups "Elm Discuss" group. >>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>> send an email to [email protected]. >>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> You received this message because you are subscribed to the Google >>>>>>>>> Groups "Elm Discuss" group. >>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>> send an email to [email protected]. >>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Elm Discuss" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Elm Discuss" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to [email protected]. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Elm Discuss" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "Elm Discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Elm Discuss" group. 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