Haskell gtk安装类型冲突

Question

基本问题:

我试图在OSX 10.10.4上使用标准mac指令安装Haskell的gtk包。具体来说，我想运行threadscope，所以我需要gtk。homebrew和gtk buildtools的早期阶段工作良好，但当我

cabal install gtk

或

cabal install --with-gcc=gcc-4.8 gtk

我得到以下编译错误:

Graphics/UI/Gtk/Embedding/Plug.chs:120:6:
Couldn't match expected type ‘Ptr ()’
            with actual type ‘Maybe DrawWindow’
In the first argument of ‘gtk_plug_new’, namely
  ‘(fromNativeWindowId (fromMaybe nativeWindowIdNone socketId))’
In the second argument of ‘($)’, namely
  ‘gtk_plug_new
     (fromNativeWindowId (fromMaybe nativeWindowIdNone socketId))’
Graphics/UI/Gtk/Embedding/Plug.chs:137:6:
Couldn't match expected type ‘Ptr ()’
            with actual type ‘Maybe DrawWindow’
In the second argument of ‘ (Display arg1) arg2
                             -> withForeignPtr arg1
                                $  argPtr1 -> gtk_plug_new_for_display argPtr1 arg2’, namely
  ‘(fromNativeWindowId (fromMaybe nativeWindowIdNone socketId))’
In the second argument of ‘($)’, namely
  ‘( (Display arg1) arg2
      -> withForeignPtr arg1
         $  argPtr1 -> gtk_plug_new_for_display argPtr1 arg2)
     display
     (fromNativeWindowId (fromMaybe nativeWindowIdNone socketId))’
Graphics/UI/Gtk/Embedding/Plug.chs:151:3:
Couldn't match type ‘Ptr ()’ with ‘Maybe DrawWindow’
Expected type: IO (Maybe DrawWindow)
  Actual type: IO (Ptr ())
In the second argument of ‘($)’, namely
  ‘( (Plug arg1)
      -> withForeignPtr arg1 $  argPtr1 -> gtk_plug_get_id argPtr1)
     (toPlug self)’
In the expression:
  liftM toNativeWindowId
  $ ( (Plug arg1)
       -> withForeignPtr arg1 $  argPtr1 -> gtk_plug_get_id argPtr1)
      (toPlug self)
cabal: Error: some packages failed to install:

在我将Haskell平台从ghc 7.8.4更新到ghc 7.10.2之前，我已经安装并运行了Haskell的gtk库和threadscope应用程序。起初，我假设安装冲突，但我多次使用彻底的删除说明从系统中删除Haskell平台，并重新尝试安装threadscope，但没有成功。我甚至使用homebrew删除并重新安装了底层gtk+和相关软件包，仍然没有成功。

我不确定类型Ptr ()和Maybe DrawWindow起源于何处，因此冲突可能来自何处。任何关于什么可能会出错的想法将是欢迎的!

Answer 1

也许你可以尝试用这一行安装GTK

cabal install gtk -fhave-quartz-gtk

Answer 2

在edsko的博客中有一个安装GTK和threadscope的方法:

http://www.edsko.net/2015/03/09/sandboxes-revisited/

搜索"GTK sandbox"

我能够使用上面的指令在ghc-7.10.2中构建threadscope。

我使用的具体命令:

export PATH=/opt/X11/lib/pkgconfig
brew install gtk+                      # installed gtk+-2.24.25
brew install poppler                   # installed poppler-0.35.0
cabal sandbox init
cabal install gtk2hs-buildtools
cabal install gtk
cabal install poppler --with-gcc=gcc-4.9 --extra-include-dirs=/usr/local/include
cabal install threadscope

沙箱中安装的包的具体版本:

cairo-0.13.1.0
ghc-events-0.4.4.0
gio-0.13.1.0
glib-0.13.2.1
gtk-0.13.9
hashtables-1.2.0.2
pango-0.13.1.0
poppler-0.13.1
utf8-string-1.0.1.1