GHCi運行時鏈接程序：致命錯誤

Question

我已經安裝了gtk。這兩個模塊 System.Console.Readline和Graphics.UI.Gtk可以單獨使用。但是，當我在相同的代碼，導入這兩個模塊時ghci中加載的所有包，顯示我：

Loading package array-0.4.0.0 ... linking ... done. 
Loading package deepseq-1.3.0.0 ... linking ... done. 
Loading package containers-0.4.2.1 ... linking ... done. 
Loading package bytestring-0.9.2.1 ... linking ... done. 
Loading package transformers-0.4.3.0 ... linking ... done. 
Loading package mtl-2.2.1 ... linking ... done. 
Loading package text-1.2.0.4 ... linking ... done. 
Loading package utf8-string-1.0.1.1 ... linking ... done. 
Loading package cairo-0.13.1.0 ... linking ... done. 
Loading package glib-0.13.2.1 ... linking ... done. 
Loading package gio-0.13.1.0 ... linking ... done. 
Loading package filepath-1.3.0.0 ... linking ... done. 
Loading package old-locale-1.0.0.4 ... linking ... done. 
Loading package time-1.4 ... linking ... done. 
Loading package unix-2.5.1.0 ... linking ... done. 
Loading package directory-1.2.4.0 ... linking ... done. 
Loading package pretty-1.1.1.0 ... linking ... done. 
Loading package process-1.2.3.0 ... linking ... done. 
Loading package pango-0.13.1.0 ... linking ... done. 
Loading package gtk-0.13.9 ... linking ... done. 
Loading package old-time-1.1.0.0 ... linking ... done. 
Loading package directory-1.1.0.2 ... 

GHCi runtime linker: fatal error: I found a duplicate definition for symbol 
    __hscore_S_IXUSR 
whilst processing object file 
    /usr/lib/ghc/directory-1.1.0.2/HSdirectory-1.1.0.2.o 
This could be caused by: 
    * Loading two different object files which export the same symbol 
    * Specifying the same object file twice on the GHCi command line 
    * An incorrect `package.conf' entry, causing some object to be 
    loaded twice. 
GHCi cannot safely continue in this situation. Exiting now. Sorry. 

我明白任何幫助！

Answer 1

在闡述Yuras的回答，要麼註銷未使用的包裝，或將其隱藏。 要註銷，使用（例如）

ghc-pkg unregister directory-1.1.0.2 

開始ghci中時，您還可以隱藏包。例如：

ghci -hide-package directory-1.1.0.2