用自制安装灵药失败，因为JPEG

Question

我试图安装灵药，也未能提供安装依赖的一个，JPEG：

$ brew install elixir 
==> Installing dependencies for elixir: jpeg, libtiff, wxmac, erlang 
Error: /usr/local/Library/LinkedKegs/jpeg is not a valid keg 

所以当然我尝试brew install jpeg和其他几个人：

$ brew install jpeg 
Error: jpeg-jpeg already installed 
To install this version, first `brew unlink jpeg' 
$ brew unlink jpeg 
Error: No such keg: /usr/local/Cellar/jpeg 
$ brew info jpeg 
jpeg: stable 8d (bottled) 
JPEG image manipulation library 
http://www.ijg.org 
Not installed 
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/jpeg.rb 
==> Options 
--universal 
Build a universal binary 

如果我运行brew doctor，它只是告诉我安装jpeg。有没有人遇到过这个？我在约塞米蒂10.10.5。在尝试安装jpeg后，我没有想到会看到jpeg-jpeg already installed。

我brew --config：

$ brew --config 
HOMEBREW_VERSION: 0.9.5 
ORIGIN: https://github.com/Homebrew/homebrew.git 
HEAD: 070b76df5a4096dcc6196fc51e56185ae7dfd617 
Last commit: 80 minutes ago 
HOMEBREW_PREFIX: /usr/local 
HOMEBREW_REPOSITORY: /usr/local 
HOMEBREW_CELLAR: /usr/local/Cellar 
HOMEBREW_BOTTLE_DOMAIN: https://homebrew.bintray.com 
CPU: quad-core 64-bit broadwell 
OS X: 10.10.5-x86_64 
Xcode: 7.1 
CLT: 7.1.0.0.1.1444952191 
Clang: 7.0 build 700 
X11: N/A 
System Ruby: 2.0.0-p481 
Perl: /usr/bin/perl 
Python: /usr/bin/python 
Ruby: /Users/Me/.rbenv/shims/ruby => /Users/Me/.rbenv/versions/2.1.2/bin/ruby 
Java: 1.8.0_51, 1.6.0_65-b14-468 

更新了brew remove --force jpeg：

$ brew remove --force jpeg 
$ brew install jpeg 
Error: jpeg-jpeg already installed 
To install this version, first `brew unlink jpeg' 

Answer 1

我最终得到这个由https://github.com/Homebrew/homebrew/issues/37250以下指导工作。具体而言，this comment。之后，我刚刚删除了/usr/local/Library/LinkedKegs/jpeg的目录，然后能够安装jpeg就好了。