根据this post，最终有一个支持模板haskell和ghci的GHC版本的debian包。
这是真的，我从Raspbian的新副本开始，我将 #movie-player {
padding: 0.7em;
margin: 0 auto;
width: -webkit-calc((100% - 3em) / 1);
width: calc((100% - 3em) / 1);
max-width: 600px;
border: 1px solid #e7e7e7;
}
<figure>
<video class="fadescript" id="movie-player" width="640" height="360" preload controls>
<source src="video/explainervideo.mp4" />
<source src="video/explainervideo.ogv" />
<source src="video/explainervideo.webm" />
</video>
</figure>
文件更改为：
/etc/apt/sources.list我做了deb http://http.debian.net/debian sid main contrib non-free
# Uncomment line below then 'apt-get update' to enable 'apt-get source'
#deb-src http://archive.raspbian.org/raspbian/ wheezy main contrib non-free rpi
，然后我做了sudo apt-get update && sudo apt-get upgrade和sudo apt-get install ghc。
sudo apt-get install cabal-install报告7.8.4。 GHCi工作正常，TH也是如此。
但出于某种原因，我无法安装任何带有cabal的软件包。无论我选择哪一个，我都会得到一些错误版本：
ghc --version有谁知道我离开了哪里？
更新
login as: pi
pi@192.168.1.5's password:
Linux raspberrypi 3.18.11-v7+ #781 SMP PREEMPT Tue Apr 21 18:07:59 BST 2015 armv7l
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Mon May 11 17:17:22 2015
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.8.4
$ mkdir test
$ cd test
$ cabal sandbox init
Writing a default package environment file to
/home/pi/test/cabal.sandbox.config
Creating a new sandbox at /home/pi/test/.cabal-sandbox
$ cabal install array
Resolving dependencies...
Notice: installing into a sandbox located at /home/pi/test/.cabal-sandbox
Downloading array-0.5.1.0...
Configuring array-0.5.1.0...
Failed to install array-0.5.1.0
Build log ( /home/pi/test/.cabal-sandbox/logs/array-0.5.1.0.log ):
cabal: Error: some packages failed to install:
array-0.5.1.0 failed during the configure step. The exception was:
user error ('/usr/bin/ghc' exited with an error:
/tmp/ghc2287_0/ghc2287_6.s: Assembler messages:
/tmp/ghc2287_0/ghc2287_6.s:76:0:
Error: selected processor does not support ARM mode `movw
r7,:lower16:stg_bh_upd_frame_info'
/tmp/ghc2287_0/ghc2287_6.s:77:0:
Error: selected processor does not support ARM mode `movt
r7,:upper16:stg_bh_upd_frame_info'
/tmp/ghc2287_0/ghc2287_6.s:80:0:
Error: selected processor does not support ARM mode `movw
r7,:lower16:base_GHCziTopHandler_runMainIO_closure'
/tmp/ghc2287_0/ghc2287_6.s:81:0:
Error: selected processor does not support ARM mode `movt
r7,:upper16:base_GHCziTopHandler_runMainIO_closure'
/tmp/ghc2287_0/ghc2287_6.s:82:0:
Error: selected processor does not support ARM mode `movw
r8,:lower16:Cabalzm1zi22zi1zi1_DistributionziSimple_defaultMain_closure'
/tmp/ghc2287_0/ghc2287_6.s:83:0:
Error: selected processor does not support ARM mode `movt
r8,:upper16:Cabalzm1zi22zi1zi1_DistributionziSimple_defaultMain_closure'
)
答案 0 :(得分：6)
每次你想用GHC或--ghc-options=-opta-march=armv7a构建东西时，它都需要cabal install。有了这个，它就有用了！
<强>更新
如果你执行--ghc-options="-opta-mcpu=cortex-a7 -opta-mfpu=neon -opta-mtune=native -opta-mfloat-abi=hard，浮点也会起作用。我通过猜测和检查以及阅读旧的论坛帖子来达到这个目的，所以这些也可能不是最好的设置。
Cabal还有一个用户配置文件，您可以在其中存储此设置，并在调用GHC时应用它。