无法使用GHC 7.8rc2和Windows 7编译简单的hello世界（或使用cabal安装软件包）

Question

使用ghc 7.8 ， cabal 1.18.1.3和cabal-install 1.18.0.2时，我无法编译简单的hello world或使用cabal install安装软件包。

从命令提示符执行cabal install stm （或任何其他程序包）时，Windows显示“ghc.exe已停止工作”窗口，输出为：

Reading available packages...
Choosing modular solver.
Resolving dependencies...
Ready to install stm-2.4.2
Extracting
Waiting for install task to finish...
C:\Users\%USER%\AppData\Roaming\cabal\packages\hackage.haskell.org\stm\2.4.2\stm-2.4.2.tar.gz
to C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556...
Updating stm.cabal with the latest revision from the index.
Configuring stm-2.4.2...
creating C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup
creating C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist
creating C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup
"c:\ghc-7.8.0\bin\ghc.exe" "--make" "-odir" "C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup" "-hidir" "C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup" "-i" "-iC:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2" "-package-id" "Cabal-1.18.1.3-ac8664a5c71d605f2a4a8e21170969e0" "C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup\setup.hs" "-o" "C:\Users\%USER%\AppData\Local\Temp\stm-2.4.2-6556\stm-2.4.2\dist\setup\setup.exe"
Failed to install stm-2.4.2
Last 10 lines of the build log ( C:\Users\%USER%\AppData\Roaming\cabal\logs\stm-2.4.2.log ):
World file is already up to date.
cabal.exe: Error: some packages failed to install:
stm-2.4.2 failed during the configure step. The exception was:
user error

我按照以下步骤安装了（？） GHC 7.8和cabal-install

• 下载了GHC 7.8 RC2（ http://www.haskell.org/ghc/dist/7.8.1-rc2/ghc-7.8.0.20140228-i386-unknown-mingw32.tar.bz2 ）
• 将tar的内容提取到文件夹$ GHC $
• 将$ GHC $ \\ bin和$ GHC $ \\ mingw \\ bing文件夹添加到PATH。
• 下载prebuilt cabal-install（ http://www.haskell.org/cabal/release/cabal-install-1.18.0.2/cabal.exe ）
• 将cabal.exe复制到$ GHC $ \\ bin所以它在路径中
• 运行cabal update
• 运行cabal install stm （或任何其他包）

在完成所有这些之前，我卸载了我之前的Haskell平台，从%USER%\\AppData\\Roaming删除了文件夹cabal和ghc，以及Program Files夹中的其他haskell内容。

我不确定GHC是否需要任何额外的安装步骤

我需要GHC 7.8因为我想尝试GHCJS。

PS ：

我还在我的env变量中添加了LANG=C ，这样编译就不会抛出UTF-8编码错误。

cabal --version 显示 ：

cabal-install version 1.18.0.2
using version 1.18.1 of the Cabal library

这似乎没问题，除了cabal库显示为1.18.1而不是1.18.1.3，但我不确定这是一个错误。

ghc-pkg list显示：

c:/ghc-7.8.0\lib\package.conf.d:
Cabal-1.18.1.3
Win32-2.3.0.1
array-0.5.0.0
base-4.7.0.0
bin-package-db-0.0.0.0
binary-0.7.1.0
rts-1.0
bytestring-0.10.4.0
containers-0.5.4.0
deepseq-1.3.0.2
directory-1.2.0.2
filepath-1.3.0.2
(ghc-7.8.0.20140228)
ghc-prim-0.3.1.0
(haskell2010-1.1.1.1)
(haskell98-2.0.0.3)
hoopl-3.10.0.0
hpc-0.6.0.1
integer-gmp-0.5.1.0
old-locale-1.0.0.6
old-time-1.1.0.2
pretty-1.1.1.1
process-1.2.0.0
template-haskell-2.9.0.0
time-1.4.1
transformers-0.3.0.0

**编辑**：尝试通过进入其文件夹手动编译stm并运行ghc生成相同的错误窗口并给出输出：

编辑2 ：实际上，我甚至无法使用ghc helloworld.hs编译一个简单的hello世界：

main = putStrLn“你好，世界！”

使用“-v3”进行编译会得到以下（无信息）输出：

Glasgow Haskell Compiler, Version 7.8.0.20140228, stage 2 booted by GHC version 7.6.3
Using binary package database: C:\ghc-7.8.0\lib\package.conf.d\package.cache
wired-in package ghc-prim mapped to ghc-prim-0.3.1.0-ce20d91f79b43ede95508e8cfd2188b0
wired-in package integer-gmp mapped to integer-gmp-0.5.1.0-67cd00feecdc491a633c46b0f7652b46
wired-in package base mapped to base-4.7.0.0-d4a0afe8e5c5f0dff2237b1231b56978
wired-in package rts mapped to builtin_rts
wired-in package template-haskell mapped to template-haskell-2.9.0.0-f798cb95c80f3e3751ec33b413381b57
wired-in package dph-seq not found.
wired-in package dph-par not found.
Hsc static flags:
wired-in package ghc-prim mapped to ghc-prim-0.3.1.0-ce20d91f79b43ede95508e8cfd2188b0
wired-in package integer-gmp mapped to integer-gmp-0.5.1.0-67cd00feecdc491a633c46b0f7652b46
wired-in package base mapped to base-4.7.0.0-d4a0afe8e5c5f0dff2237b1231b56978
wired-in package rts mapped to builtin_rts
wired-in package template-haskell mapped to template-haskell-2.9.0.0-f798cb95c80f3e3751ec33b413381b57
wired-in package dph-seq not found.
wired-in package dph-par not found.
*** Chasing dependencies:
Chasing modules from: *asd.hs
Stable obj: []
Stable BCO: []
Ready for upsweep
  [NONREC
      ModSummary {
         ms_hs_date = 2014-03-10 04:11:51 UTC
         ms_mod = main:Main,
         ms_textual_imps = [import (implicit) Prelude]
         ms_srcimps = []
      }]
*** Deleting temp files:
Deleting:
compile: input file asd.hs
Created temporary directory: C:\Users\facuq\AppData\Local\Temp\ghc6824_1
*** Checking old interface for main:Main:
[1 of 1] Compiling Main             ( asd.hs, asd.o )
*** Parser:
*** Renamer/typechecker:
*** Desugar:
Result size of Desugar (after optimization)
  = {terms: 7, types: 5, coercions: 0}
*** Simplifier:
Result size of Simplifier = {terms: 7, types: 5, coercions: 0}
*** Tidy Core:
Result size of Tidy Core = {terms: 7, types: 5, coercions: 0}
*** CorePrep:
Result size of CorePrep = {terms: 9, types: 6, coercions: 0}
*** Stg2Stg:
*** CodeOutput:
*** New CodeGen:
*** CPSZ:
*** CPSZ:

Answer 1

这实际上是GHC中的一个错误; 它在GHC邮件列表中得到确认，两个人可以重现它（ ghc的bug管理器线程 ）。

Answer 2

您的ghc.exe路径和cabal.exe路径应该在您的路径变量中

它对我有用。