Question

昨天我尝试通过cabal安装Haskell模块，以便在Haskell中安装模块。我必须先安装cabal。

我的系统：Windows 7

Haskell-Compiler版本：GHC 7.0.2（链接http://www.haskell.org/ghc/download）

Cabal：http://haskell.org/cabal/download.html

我将逐步描述这个过程，希望您可以在cabal和使用cabal的软件包安装过程中指定我的错误行为。

程序：

已安装的Haskell编译器GHC 7.0.2

从Windows 7开始菜单启动GHCi，在DOS窗口中提供以下输出：

GHCi, version 7.0.2: Website  :? for help .
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
Prelude>

到目前为止一切顺利：基本软件包中的每个函数都是可访问的，并且按其应有的方式运行。

结论：GHCi安装没有错误的步骤。

从源代码下载cabal.exe（参见简介），将其复制到C：\ ghc \ ghc-7.0.2 \ bin（添加到％Path％-variables中）
< / LI>
下载cabal-install-0.8.2.tar.gz，因为该网站建议用户干净安装需要打包。
打开新的dos提示窗口
键入cabal update（按网站建议），它确实更新了列表并返回用户提示模式
键入cd C:\pathwhere\cabal-install-0.8.2.tar.gz（切换到cabal-install文件所在的目录）

键入cabal install cabal-install-0.8.2，然后安装开始在dos-box中创建以下输出：

Resolving dependencies...
Downloading containers-0.3.0.0...
Configuring containers-0.3.0.0...
Preprocessing library containers-0.3.0.0...
Building containers-0.3.0.0...
[1 of 7] Compiling Data.Sequence    ( Data\Sequence.hs, dist\build\Data\Sequence.o )
[2 of 7] Compiling Data.Set         ( Data\Set.hs, dist\build\Data\Set.o )
[3 of 7] Compiling Data.Map         ( Data\Map.hs, dist\build\Data\Map.o )
[4 of 7] Compiling Data.IntSet      ( Data\IntSet.hs, dist\build\Data\IntSet.o )
[5 of 7] Compiling Data.IntMap      ( Data\IntMap.hs, dist\build\Data\IntMap.o )
[6 of 7] Compiling Data.Tree        ( Data\Tree.hs, dist\build\Data\Tree.o )
[7 of 7] Compiling Data.Graph       ( Data\Graph.hs, dist\build\Data\Graph.o )
cabal: ar is required but it could not be found.
Downloading filepath-1.1.0.4...
Configuring filepath-1.1.0.4...
Preprocessing library filepath-1.1.0.4...
Building filepath-1.1.0.4...
[1 of 3] Compiling System.FilePath.Posix ( System\FilePath\Posix.hs, dist\build\System\FilePath\Posix.o )
[2 of 3] Compiling System.FilePath.Windows ( System\FilePath\Windows.hs, dist\build\System\FilePath\Windows.o )
[3 of 3] Compiling System.FilePath  ( System\FilePath.hs, dist\build\System\FilePath.o )
cabal: ar is required but it could not be found.
Downloading parsec-2.1.0.1...
Configuring parsec-2.1.0.1...
Preprocessing library parsec-2.1.0.1...
Building parsec-2.1.0.1...
[ 1 of 10] Compiling Text.ParserCombinators.Parsec.Pos ( Text\ParserCombinators\Parsec\Pos.hs, dist\build\Text\ParserCombinators\Parsec\Pos.o )
[ 2 of 10] Compiling Text.ParserCombinators.Parsec.Error ( Text\ParserCombinators\Parsec\Error.hs, dist\build\Text\ParserCombinators\Parsec\Error.o )
[ 3 of 10] Compiling Text.ParserCombinators.Parsec.Prim ( Text\ParserCombinators\Parsec\Prim.hs, dist\build\Text\ParserCombinators\Parsec\Prim.o )
[ 4 of 10] Compiling Text.ParserCombinators.Parsec.Char ( Text\ParserCombinators\Parsec\Char.hs, dist\build\Text\ParserCombinators\Parsec\Char.o )
[ 5 of 10] Compiling Text.ParserCombinators.Parsec.Combinator ( Text\ParserCombinators\Parsec\Combinator.hs, dist\build\Text\ParserCombinators\Parsec\Combinator.o )
[ 6 of 10] Compiling Text.ParserCombinators.Parsec.Expr ( Text\ParserCombinators\Parsec\Expr.hs, dist\build\Text\ParserCombinators\Parsec\Expr.o )
[ 7 of 10] Compiling Text.ParserCombinators.Parsec ( Text\ParserCombinators\Parsec.hs, dist\build\Text\ParserCombinators\Parsec.o )
[ 8 of 10] Compiling Text.ParserCombinators.Parsec.Token ( Text\ParserCombinators\Parsec\Token.hs, dist\build\Text\ParserCombinators\Parsec\Token.o )
[ 9 of 10] Compiling Text.ParserCombinators.Parsec.Perm ( Text\ParserCombinators\Parsec\Perm.hs, dist\build\Text\ParserCombinators\Parsec\Perm.o )
[10 of 10] Compiling Text.ParserCombinators.Parsec.Language ( Text\ParserCombinators\Parsec\Language.hs, dist\build\Text\ParserCombinators\Parsec\Language.o )
cabal: ar is required but it could not be found.
Downloading time-1.1.4...
[1 of 1] Compiling Main             ( C:\Users\altug\AppData\Local\Temp\time-1.1.43528time-1.1.4\Setup.hs, C:\Users\altug\AppData\Local\Temp\time-1.1.43528\time-1.1.4\dist\setup\Main.o )
C:\Users\altug\AppData\Local\Temp\time-1.1.43528\time-1.1.4\Setup.hs:5:1:
    Warning: In the use of `runTests'
             (imported from Distribution.Simple, but defined in Distribution.Simple.UserHooks):
             Deprecated: "Please use the new testing interface instead!"
Linking C:\Users\altug\AppData\Local\Temp\time-1.1.43528\time-1.1.4\dist\setup\setup.exe ...
Configuring time-1.1.4...
Preprocessing library time-1.1.4...
Building time-1.1.4...
[ 1 of 24] Compiling Data.Time.Clock.CTimeval ( Data\Time\Clock\CTimeval.hs, dist\build\Data\Time\Clock\CTimeval.o )
[ 2 of 24] Compiling Data.Time.Clock.Scale ( Data\Time\Clock\Scale.hs, dist\build\Data\Time\Clock\Scale.o )
[ 3 of 24] Compiling Data.Time.Calendar.Private ( Data\Time\Calendar\Private.hs, dist\build\Data\Time\Calendar\Private.o )
[ 4 of 24] Compiling Data.Time.Calendar.MonthDay ( Data\Time\Calendar\MonthDay.hs, dist\build\Data\Time\Calendar\MonthDay.o )
[ 5 of 24] Compiling Data.Time.Calendar.Days ( Data\Time\Calendar\Days.hs, dist\build\Data\Time\Calendar\Days.o )
[ 6 of 24] Compiling Data.Time.Calendar.OrdinalDate ( Data\Time\Calendar\OrdinalDate.hs, dist\build\Data\Time\Calendar\OrdinalDate.o )
[ 7 of 24] Compiling Data.Time.Calendar.Gregorian ( Data\Time\Calendar\Gregorian.hs, dist\build\Data\Time\Calendar\Gregorian.o )
[ 8 of 24] Compiling Data.Time.Calendar.WeekDate ( Data\Time\Calendar\WeekDate.hs, dist\build\Data\Time\Calendar\WeekDate.o )
[ 9 of 24] Compiling Data.Time.Calendar.JulianYearDay ( Data\Time\Calendar\JulianYearDay.hs, dist\build\Data\Time\Calendar\JulianYearDay.o )
[10 of 24] Compiling Data.Time.Calendar.Julian ( Data\Time\Calendar\Julian.hs, dist\build\Data\Time\Calendar\Julian.o )
[11 of 24] Compiling Data.Time.Clock.UTC ( Data\Time\Clock\UTC.hs, dist\build\Data\Time\Clock\UTC.o )
[12 of 24] Compiling Data.Time.Clock.POSIX ( Data\Time\Clock\POSIX.hs, dist\build\Data\Time\Clock\POSIX.o )
[13 of 24] Compiling Data.Time.Clock.UTCDiff ( Data\Time\Clock\UTCDiff.hs, dist\build\Data\Time\Clock\UTCDiff.o )
[14 of 24] Compiling Data.Time.Clock  ( Data\Time\Clock.hs, dist\build\Data\Time\Clock.o )
[15 of 24] Compiling Data.Time.LocalTime.TimeZone ( Data\Time\LocalTime\TimeZone.hs, dist\build\Data\Time\LocalTime\TimeZone.o )
[16 of 24] Compiling Data.Time.LocalTime.TimeOfDay ( Data\Time\LocalTime\TimeOfDay.hs, dist\build\Data\Time\LocalTime\TimeOfDay.o )
[17 of 24] Compiling Data.Time.Calendar ( Data\Time\Calendar.hs, dist\build\Data\Time\Calendar.o )
[18 of 24] Compiling Data.Time.Calendar.Easter ( Data\Time\Calendar\Easter.hs, dist\build\Data\Time\Calendar\Easter.o )
[19 of 24] Compiling Data.Time.LocalTime.LocalTime ( Data\Time\LocalTime\LocalTime.hs, dist\build\Data\Time\LocalTime\LocalTime.o )
[20 of 24] Compiling Data.Time.LocalTime ( Data\Time\LocalTime.hs, dist\build\Data\Time\LocalTime.o )
[21 of 24] Compiling Data.Time.Clock.TAI ( Data\Time\Clock\TAI.hs, dist\build\Data\Time\Clock\TAI.o )
[22 of 24] Compiling Data.Time.Format.Parse ( Data\Time\Format\Parse.hs, dist\build\Data\Time\Format\Parse.o )
[23 of 24] Compiling Data.Time.Format ( Data\Time\Format.hs, dist\build\Data\Time\Format.o )
[24 of 24] Compiling Data.Time        ( Data\Time.hs, dist\build\Data\Time.o )
Registering time-1.1.4...
Installing library in
C:\Users\altug\AppData\Roaming\cabal\time-1.1.4\ghc-7.0.2
Registering time-1.1.4...
Downloading random-1.0.0.3...
Configuring random-1.0.0.3...
Preprocessing library random-1.0.0.3...
Building random-1.0.0.3...
[1 of 1] Compiling System.Random    ( System\Random.hs, dist\build\System\Random.o )
cabal: ar is required but it could not be found.
Downloading transformers-0.2.2.0...
Configuring transformers-0.2.2.0...
Preprocessing library transformers-0.2.2.0...
Building transformers-0.2.2.0...
[ 1 of 21] Compiling Data.Functor.Product ( Data\Functor\Product.hs, dist\buildData\Functor\Product.o )
[ 2 of 21] Compiling Data.Functor.Constant ( Data\Functor\Constant.hs, dist\build\Data\Functor\Constant.o )
[ 3 of 21] Compiling Data.Functor.Compose ( Data\Functor\Compose.hs, dist\build\Data\Functor\Compose.o )
[ 4 of 21] Compiling Data.Functor.Identity ( Data\Functor\Identity.hs, dist\build\Data\Functor\Identity.o )
[ 5 of 21] Compiling Control.Monad.Trans.Class ( Control\Monad\Trans\Class.hs, dist\build\Control\Monad\Trans\Class.o )
[ 6 of 21] Compiling Control.Monad.IO.Class ( Control\Monad\IO\Class.hs, dist\build\Control\Monad\IO\Class.o )
[ 7 of 21] Compiling Control.Monad.Trans.Cont ( Control\Monad\Trans\Cont.hs, dist\build\Control\Monad\Trans\Cont.o )
[ 8 of 21] Compiling Control.Monad.Trans.Error ( Control\Monad\Trans\Error.hs, dist\build\Control\Monad\Trans\Error.o )
[ 9 of 21] Compiling Control.Monad.Trans.Identity ( Control\Monad\Trans\Identity.hs, dist\build\Control\Monad\Trans\Identity.o )
[10 of 21] Compiling Control.Monad.Trans.List ( Control\Monad\Trans\List.hs, dist\build\Control\Monad\Trans\List.o )
[11 of 21] Compiling Control.Monad.Trans.Maybe ( Control\Monad\Trans\Maybe.hs, dist\build\Control\Monad\Trans\Maybe.o )
[12 of 21] Compiling Control.Monad.Trans.Reader ( Control\Monad\Trans\Reader.hs, dist\build\Control\Monad\Trans\Reader.o )
[13 of 21] Compiling Control.Monad.Trans.RWS.Lazy ( Control\Monad\Trans\RWS\Lazy.hs, dist\build\Control\Monad\Trans\RWS\Lazy.o )
[14 of 21] Compiling Control.Monad.Trans.RWS ( Control\Monad\Trans\RWS.hs, dist\build\Control\Monad\Trans\RWS.o )
[15 of 21] Compiling Control.Monad.Trans.RWS.Strict ( Control\Monad\Trans\RWS\Strict.hs, dist\build\Control\Monad\Trans\RWS\Strict.o )
[16 of 21] Compiling Control.Monad.Trans.State.Lazy ( Control\Monad\Trans\State\Lazy.hs, dist\build\Control\Monad\Trans\State\Lazy.o )
[17 of 21] Compiling Control.Monad.Trans.State ( Control\Monad\Trans\State.hs, dist\build\Control\Monad\Trans\State.o )
[18 of 21] Compiling Control.Monad.Trans.State.Strict ( Control\Monad\Trans\State\Strict.hs, dist\build\Control\Monad\Trans\State\Strict.o )
[19 of 21] Compiling Control.Monad.Trans.Writer.Lazy ( Control\Monad\Trans\Writer\Lazy.hs, dist\build\Control\Monad\Trans\Writer\Lazy.o )
[20 of 21] Compiling Control.Monad.Trans.Writer ( Control\Monad\Trans\Writer.hs, dist\build\Control\Monad\Trans\Writer.o )
[21 of 21] Compiling Control.Monad.Trans.Writer.Strict ( Control\Monad\Trans\Writer\Strict.hs, dist\build\Control\Monad\Trans\Writer\Strict.o )
cabal: ar is required but it could not be found.
Downloading zlib-0.5.3.1...
Configuring zlib-0.5.3.1...
Preprocessing library zlib-0.5.3.1...
Building zlib-0.5.3.1...
[1 of 5] Compiling Codec.Compression.Zlib.Stream ( dist\build\Codec\Compression\Zlib\Stream.hs, dist\build\Codec\Compression\Zlib\Stream.o )
[2 of 5] Compiling Codec.Compression.Zlib.Internal ( Codec\Compression\Zlib\Internal.hs, dist\build\Codec\Compression\Zlib\Internal.o )
[3 of 5] Compiling Codec.Compression.Zlib.Raw ( Codec\Compression\Zlib\Raw.hs, dist\build\Codec\Compression\Zlib\Raw.o )
[4 of 5] Compiling Codec.Compression.Zlib ( Codec\Compression\Zlib.hs, dist\build\Codec\Compression\Zlib.o )
[5 of 5] Compiling Codec.Compression.GZip ( Codec\Compression\GZip.hs, dist\build\Codec\Compression\GZip.o )
cabal: ar is required but it could not be found.
cabal: Error: some packages failed to install:
Cabal-1.8.0.6 depends on filepath-1.1.0.4 which failed to install.
HTTP-4000.1.1 depends on transformers-0.2.2.0 which failed to install.
cabal-install-0.8.2 depends on zlib-0.5.3.1 which failed to install.
containers-0.3.0.0 failed during the building phase. The exception was:
ExitFailure 1
directory-1.0.1.2 depends on filepath-1.1.0.4 which failed to install.
filepath-1.1.0.4 failed during the building phase. The exception was:
ExitFailure 1
mtl-2.0.1.0 depends on transformers-0.2.2.0 which failed to install.
network-2.3.0.2 depends on parsec-2.1.0.1 which failed to install.
parsec-2.1.0.1 failed during the building phase. The exception was:
ExitFailure 1
process-1.0.1.5 depends on filepath-1.1.0.4 which failed to install.
random-1.0.0.3 failed during the building phase. The exception was:
ExitFailure 1
transformers-0.2.2.0 failed during the building phase. The exception was:
ExitFailure 1
zlib-0.5.3.1 failed during the building phase. The exception was:
ExitFailure 1

我的结论：

正如人们可以很容易看到的那样，输出表明存在一些错误，但我不知道它们是什么意思。我继续尝试安装我的代数包，专注于从步骤1开始使用Dos-Interpeter。

再次在dos-box输入提示符中，我输入cabal install constructive-algebra，创建了此输出：

Resolving dependencies...
cabal: cannot configure algebra-0.0.0.1. It requires base >=3.0 && <4.1
For the dependency on base >=3.0 && <4.1 there are these packages:
base-3.0.3.1, base-3.0.3.2 and base-4.0.0.0. However none of them are available.
base-3.0.3.1 was excluded because of the top level dependency base -any
base-3.0.3.2 was excluded because of the top level dependency base -any
base-4.0.0.0 was excluded because of the top level dependency base -any

我认为没有安装包。我需要有人可以解释，我需要做些什么确切的步骤才能使模块正常工作。

感谢您阅读这篇文章并以回应方式让我理解它并解释和编译器工作。

Answer 1

最简单的方法是推荐像DasBoot一样的Haskell平台，但无论如何我都会尝试回答你的问题：

1）对于问题的第一部分，您的安装失败，因为您的路径出了问题。找不到工具“ar”。创建库时使用ar。如果在命令窗口中只输入“ar”，它应返回类似

的内容

用法：ar [仿真选项] [ - ] {dmpqrstx} [abcfilNoPsSuvV] [会员名] [计数] 存档文件... ar -M [

如果没有，那么你需要将包含ar（可能是C：\ ghc \ ghc-7.0.2 \ mingw \ bin）的文件夹添加到windows中的路径env变量中。

2）你的代数库不会安装在7.0.2下，至少不是开箱即用的。代数的依赖关系列为“依赖关系：基数＆gt; = 3.0＆amp;＆amp;＆lt; 4.1”

但ghc 7.0附带基础4.3。这就是你收到的原因：

cabal：无法配置algebra-0.0.0.1。它需要base＆gt; = 3.0＆amp;＆amp; ＆LT; 4.1

依赖于基数> = 3.0＆amp;＆amp; ＆lt; 4.1有这些包：

base-3.0.3.1，base-3.0.3.2和base-4.0.0.0。但是没有一个可用

幸运的是，这个特殊包装可以轻松修复。只是做

cabal unpack algebra

cd algebra-0.0.0.1

notepad algebra.cabal

将4.1更改为4.4

cabal安装

那应该这样做

Answer 2

我从Download Haskell安装了完整的软件包这个套餐包括cabal。我在win7上运行它，到目前为止没有任何问题。

FWIW，如果您点击帖子中的下载链接，然后尝试下载最新版本，则会显示一条重要消息，建议从我提供的链接下载haskell平台。

Answer 3

包名是建设性代数但它的模块名是什么？那个模块名是你应该在ghci中使用的。

在Windows 7上安装Haskell模块

3 个答案: