无法找到安装的包

Question

我不知所措。我使用OSX10.8.2。

我唯一能找到的参考是：

• 4.1我刚刚安装了软件包，但现在找不到软件包了

• 当您全局安装一个软件包时，这会发生，而前面的 软件包是在当地安装的。请注意，阴谋安装安装。 本地默认情况下和"runhaskell安装“命令安装 全球默认情况下。

默认情况下，阴谋集团设置为本地安装。我没有改变这个。Haskell是在全球安装的。

$ 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

嗯

我查了一下ghc-pkg list，但它不在那里。因此，看看它是否与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 

我是不是漏了一面旗子？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

我查了一下ghc-pkg list，但它不在那里。

ghc-pkg只知道并关心已安装的库。pointfree是一个没有随附库的可执行文件，所以ghc-pkg不知道它。

因为$HOME/Library/Haskell/bin在您的PATH中，并且可执行文件被链接到那里，所以您可以通过命令行运行它。

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

(或者诸如此类的事情，我已经很久没有玩无点球了)。

X很奇怪..。

这看起来像是来自parsec的解析错误消息。我不知道是什么把它写到那个文件上的。

$ 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

有些东西似乎践踏了你的哈德基，或者它们从一开始就没有被正确安装。这可能表明存在实际问题，但如果不需要本地文档，则可以忽略它。

Answer 2

我在~/.cabal/bin/中找到了我的阴谋包二进制文件。