Question

我不知所措。我使用OS X 10.8.2。

我能找到的唯一参考是：

4.1我刚刚安装了软件包，但现在找不到软件包了
当您在全球范围内安装软件包时会发生这种情况   包在本地安装。请注意cabal-install安装
  默认情况下本地和“runhaskell Setup”命令安装
  全局默认情况下。

默认情况下，

cabal设置为在本地安装。我没有改变这个。 Haskell在全球安装。

$ cabal install pointfree
Resolving dependencies...
Configuring pointfree-1.0.4.3...
Building pointfree-1.0.4.3...
Preprocessing executable 'pointfree' for pointfree-1.0.4.3...
[1 of 7] Compiling Plugin.Pl.Common ( Plugin/Pl/Common.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/Common.o )
[2 of 7] Compiling Plugin.Pl.Parser ( Plugin/Pl/Parser.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/Parser.o )
[3 of 7] Compiling Plugin.Pl.PrettyPrinter ( Plugin/Pl/PrettyPrinter.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/PrettyPrinter.o )
[4 of 7] Compiling Plugin.Pl.Transform ( Plugin/Pl/Transform.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/Transform.o )
[5 of 7] Compiling Plugin.Pl.Rules  ( Plugin/Pl/Rules.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/Rules.o )
[6 of 7] Compiling Plugin.Pl.Optimize ( Plugin/Pl/Optimize.hs, dist/build/pointfree/pointfree-tmp/Plugin/Pl/Optimize.o )
[7 of 7] Compiling Main             ( Main.hs, dist/build/pointfree/pointfree-tmp/Main.o )
Linking dist/build/pointfree/pointfree ...
Warning: No documentation was generated as this package does not contain a
library. Perhaps you want to use the --executables flag.
Installing executable(s) in
/Users/beoliver/Library/Haskell/ghc-7.4.2/lib/pointfree-1.0.4.3/bin
Installed pointfree-1.0.4.3
Updating documentation index /Users/beoliver/Library/Haskell/doc/index.html

$ cat ~/.bash_profile
export PATH="$HOME/Library/Haskell/bin:$PATH"


$ ls -l ~/Library/Haskell/bin/
total 24
lrwxr-xr-x  1 beoliver  staff  49 Dec 28 16:06 cabal -> ../ghc-7.4.2/lib/cabal-install-1.16.0.2/bin/cabal
lrwxr-xr-x  1 beoliver  staff  48 Dec 28 19:52 pointfree -> ../ghc-7.4.2/lib/pointfree-1.0.4.3/bin/pointfree
-rw-r--r--  1 beoliver  staff  66 Dec 28 19:53 x

x很奇怪......

$ cat ~/Library/Haskell/bin/x
(line 1, column 5):
unexpected "+"
expecting space or simple term

HMM

我检查ghc-pkg list但它不存在。所以看看它是否带有user包。

$ ls ~/Library/Haskell/ghc-7.4.2/lib/
Cabal-1.16.0.3      cabal-install-1.16.0.2  pointfree-1.0.4.3

$ file pointfree-1.0.4.3/bin/pointfree 
pointfree-1.0.4.3/bin/pointfree: Mach-O 64-bit executable x86_64

$ ghc-pkg list --user
/Users/beoliver/.ghc/x86_64-darwin-7.4.2/package.conf.d
   Cabal-1.16.0.3
$ cabal --version
cabal-install version 1.16.0.2
using version 1.16.0.3 of the Cabal library

我在这里错过了一面旗帜吗？我还需要建造吗？

$ ghc-pkg check
Warning: haddock-interfaces: /Library/Haskell/ghc-7.4.2/lib/haskell-platform-2012.4.0.0/doc/html/haskell-platform.haddock doesn't exist or isn't a file
Warning: haddock-html: /Library/Haskell/ghc-7.4.2/lib/haskell-platform-2012.4.0.0/doc/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /Library/Haskell/ghc-7.4.2/lib/GLUT-2.1.2.1/doc/html/GLUT.haddock doesn't exist or isn't a file

Answer 1

我检查ghc-pkg list但它不存在。

ghc-pkg只知道并关心已安装的库。 pointfree是一个没有附带库的可执行文件，因此ghc-pkg无法了解它。

由于$HOME/Library/Haskell/bin位于您的PATH中，并且可执行文件已链接到那里，您只需从命令行运行它

$ pointfree "\f x y -> f y x"
flip

（或类似的东西，自从我玩无点游戏以来已经很长时间了。）

x很奇怪......

这看起来像parsec的解析错误消息。不过，我不知道可能会把它写到那个文件中。

$ ghc-pkg check
Warning: haddock-interfaces: /Library/Haskell/ghc-7.4.2/lib/haskell-platform-2012.4.0.0/doc/html/haskell-platform.haddock doesn't exist or isn't a file
Warning: haddock-html: /Library/Haskell/ghc-7.4.2/lib/haskell-platform-2012.4.0.0/doc/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /Library/Haskell/ghc-7.4.2/lib/GLUT-2.1.2.1/doc/html/GLUT.haddock doesn't exist or isn't a file

你的黑线鳕似乎有些踩踏，或者它们从一开始就没有正确安装。可能表示实际问题，但如果您不想要本地文档，则可能会忽略它。

Answer 2

我在~/.cabal/bin/找到了我的cabal包二进制文件。

无法找到cabal安装的包

2 个答案: