Я сначала настроил Haskell из https://www.haskell.org/platform/, но у ghc-mod были проблемы с песочницами, и для его обновления мне нужна была новая кабала, которая нужен новый ghc. Или что-то типа того. (qaru.site/info/332869/...??)
Итак, я удалил все и установил из http://ghcformacosx.github.io/. Затем некоторые странные неудачи, создающие новую песочницу, были связаны с тем, что что-то не соответствовало действительности для счастливых людей. (https://github.com/haskell-suite/haskell-src-exts/issues/14)
Ok. Установлен счастливым. Теперь попробуйте (снова) установить ghc-mod, и я получаю гигантский беспорядок (ниже).
Должен ли я использовать http://www.stackage.org/?
Я видел, как некоторые люди упоминают ghc-pkg recache
или cabal install cabal-install
... Это те вещи, которые мне нужно делать?
Mess:
Resolving dependencies... Configuring ghc-mod-5.2.1.2... Building ghc-mod-5.2.1.2... Failed to install ghc-mod-5.2.1.2 Build log ( /Users/mark/.cabal/logs/ghc-mod-5.2.1.2.log ): Configuring ghc-mod-5.2.1.2... Building ghc-mod-5.2.1.2... Preprocessing library ghc-mod-5.2.1.2...
Language/Haskell/GhcMod/Convert.hs:1:51: Warning:
-XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS [ 1 of 38] Compiling Language.Haskell.GhcMod.Read ( Language/Haskell/GhcMod/Read.hs, dist/build/Language/Haskell/GhcMod/Read.o ) [ 2 of 38] Compiling Language.Haskell.GhcMod.Cabal21 ( Language/Haskell/GhcMod/Cabal21.hs, dist/build/Language/Haskell/GhcMod/Cabal21.o ) [ 3 of 38] Compiling Language.Haskell.GhcMod.Cabal18 ( Language/Haskell/GhcMod/Cabal18.hs, dist/build/Language/Haskell/GhcMod/Cabal18.o ) [ 4 of 38] Compiling Language.Haskell.GhcMod.Cabal16 ( Language/Haskell/GhcMod/Cabal16.hs, dist/build/Language/Haskell/GhcMod/Cabal16.o ) [ 5 of 38] Compiling Language.Haskell.GhcMod.GHCChoice ( Language/Haskell/GhcMod/GHCChoice.hs, dist/build/Language/Haskell/GhcMod/GHCChoice.o ) [ 6 of 38] Compiling Language.Haskell.GhcMod.Error ( Language/Haskell/GhcMod/Error.hs, dist/build/Language/Haskell/GhcMod/Error.o )
Language/Haskell/GhcMod/Error.hs:12:1: Warning:
Module ‘Control.Monad.Error’ is deprecated:
Use Control.Monad.Except instead
Language/Haskell/GhcMod/Error.hs:40:10: Warning:
In the use of type constructor or class ‘Error’
(imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error):
Deprecated: "Use Control.Monad.Trans.Except instead"
Language/Haskell/GhcMod/Error.hs:40:10: Warning:
In the use of type constructor or class ‘Error’
(imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error):
Deprecated: "Use Control.Monad.Trans.Except instead" [ 7 of 38] Compiling Language.Haskell.GhcMod.Utils ( Language/Haskell/GhcMod/Utils.hs, dist/build/Language/Haskell/GhcMod/Utils.o )
Language/Haskell/GhcMod/Utils.hs:15:1: Warning:
The import of ‘Control.Applicative’ is redundant
except perhaps to import instances from ‘Control.Applicative’
To import instances alone, use: import Control.Applicative()
Language/Haskell/GhcMod/Utils.hs:45:51: Warning:
In the use of ‘strMsg’
(imported from Language.Haskell.GhcMod.Error, but defined in Control.Monad.Trans.Error):
Deprecated: "Use Control.Monad.Trans.Except instead" [ 8 of 38] Compiling Language.Haskell.GhcMod.Types ( Language/Haskell/GhcMod/Types.hs, dist/build/Language/Haskell/GhcMod/Types.o ) [ 9 of 38] Compiling Language.Haskell.GhcMod.Gap ( Language/Haskell/GhcMod/Gap.hs, dist/build/Language/Haskell/GhcMod/Gap.o )
Language/Haskell/GhcMod/Gap.hs:256:18:
Not in scope: data constructor ‘ExposePackageId’
Perhaps you meant ‘ExposePackage’ (imported from DynFlags) cabal: Error: some packages failed to install: ghc-mod-5.2.1.2 failed during the building phase. The exception was: ExitFailure 1
После применения принятого ответа (который, казалось, установил ghc-mod), запуск gch-mod дает следующее:
> ghc-mod check x.hs
cabal-helper-wrapper: Installing a private copy of Cabal, this might take a
while but will only happen once per Cabal version.
If anything goes horribly wrong just delete this directory and try again:
/Users/mark/.ghc-mod/cabal-helper
If you want to avoid this automatic installation altogether install version
1.22.0.0 of Cabal manually (into your user or global package-db):
$ cabal install Cabal-1.22.0.0
...In order, the following would be installed:
filepath-1.3.0.1 (latest: 1.4.0.0) (new version)
directory-1.2.2.1 (new version)
process-1.2.3.0 (reinstall) changes: directory-1.2.2.0 -> 1.2.2.1,
filepath-1.4.0.0 -> 1.3.0.1
Cabal-1.22.0.0 (latest: 1.22.2.0) (new version)
cabal: The following packages are likely to be broken by the reinstalls:
ghc-7.10.1
Cabal-1.22.2.0
Use --force-reinstalls if you want to install anyway.
cabal-helper-wrapper: Installing Cabal version 1.22.0.0 failed.
nYou have two choices now:
- Either you install this version of Cabal in your globa/luser package-db
somehow
n- Or you can see if you can update your cabal-install to use a different
version of the Cabal library that we can build with:
$ cabal install cabal-install --constraint 'Cabal > 1.22.0.0'
nTo check the version cabal-install is currently using try:
$ cabal --version
ghc-mod: readCreateProcess: /Users/mark/.cabal/libexec/cabal-helper-wrapper "/Users/mark/work/haskell/ixberg/dist" "entrypoints" "source-dirs" "ghc-options" "ghc-src-options" "ghc-pkg-options" "--with-ghc=ghc" "--with-ghc-pkg=ghc-pkg" "--with-cabal=cabal" (exit 1): failed
Странно, он хочет, чтобы версия Cabal была установлена:
> cabal --version
cabal-install version 1.22.0.0
using version 1.22.0.0 of the Cabal library