自定义Gem执行失败，并出现NoMethodError错误

问题描述

我写了我的第一个宝石（ruby noob alert！）。将它部署到我本地的gem目录中我运行：

  bundle install 
 bundle exec rake install 
  

此时我尝试从命令行运行我的gem。我得到一个神秘的错误：

  my_gem 
 Gem文件位置：
 C：/ ruby​​193 / lib / ruby / gems / 1.9.1 / gems / my_gem-0.0.1 / Gemfile 
致命：不是git存储库（或任何父目录）：.git 
获取Gem.bin_path（）
 C：/ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.6.3/lib/bundler/rubygems_integration.rb：305：在`block in replace_bin_path'中：未定义的方法`name'for nil： NilClass（NoMethodError）$ C $ / b：C /ruby193/lib/ruby/gems/1.9.1/gems/my_gem-0.0.1/bin/my_gem：20：在< top（required）>'$ b：从C：/ ruby​​193 / bin / my_gem：23：在`load'
从C：/ ruby​​193 / bin / my_gem：23：在< main>'
  

当我运行bundle安装时，它用它自己的代码替换了bin / my_gem的内容。我没有添加修改这个文件稍微尝试调试。失败似乎发生在Gem.bin_path中。这里是bin / my_gem的内容：

 ＃！/ usr / bin / env ruby​​ 
＃
＃此文件由Bundler生成。 
＃
＃应用程序'my_gem'是作为gem的一部分安装的，
＃这个文件是为了方便运行它。 
＃
 
 require'pathname'
 ENV ['BUNDLE_GEMFILE'] || = File.expand_path（../../ Gemfile，
 Pathname。 new（__ FILE __）。realpath）
 
 putsGem File Location：
 puts（ENV ['BUNDLE_GEMFILE']）
 
'rubygems'
需要'bundler / setup'
 
 putsgetting gem.bin_path（）
 path = Gem.bin_path（'my_gem'，'my_gem'）＃这是导致错误
 putsGem.bin_path（）：＃{path}
 
 load Gem.bin_path（'my_gem'，'my_gem'）
  
 
 
 
我不知道下一步该做什么，只能从新鲜的宝石开始。任何想法？
解决方案
看起来你正遇到这个问题 
 
 
 
因为Bundler会记住传递给 install 的标志，如果您以前曾经运行过 bundle install --binstubs 在随后的 bundle install 运行中生成binstub。您可以运行 bundle config --delete bin 删除该设置，然后恢复原始的可执行文件。
 
I've written my first gem (ruby noob alert!). To deploy it into my local gem directory I ran:
bundle install
bundle exec rake install
At this point I try to run my gem from the command line. I get a cryptic error:
my_gem
Gem File Location:
C:/ruby193/lib/ruby/gems/1.9.1/gems/my_gem-0.0.1/Gemfile
fatal: Not a git repository (or any of the parent directories): .git
getting Gem.bin_path()
C:/ruby193/lib/ruby/gems/1.9.1/gems/bundler-1.6.3/lib/bundler/rubygems_integration.rb:305:in `block in replace_bin_path': undefined method `name' for nil:NilClass (NoMethodError)
    from C:/ruby193/lib/ruby/gems/1.9.1/gems/my_gem-0.0.1/bin/my_gem:20:in `<top (required)>'
    from C:/ruby193/bin/my_gem:23:in `load'
    from C:/ruby193/bin/my_gem:23:in `<main>'
When I ran bundle install it replaced the contents of bin/my_gem with it's own code. I did add modify this file slightly trying to debug. The failure seems to happen in Gem.bin_path. Here are the contents of bin/my_gem:
#!/usr/bin/env ruby
#
# This file was generated by Bundler.
#
# The application 'my_gem' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'pathname'
ENV['BUNDLE_GEMFILE'] ||= File.expand_path("../../Gemfile",
   Pathname.new(__FILE__).realpath)

puts "Gem File Location: "
puts(ENV['BUNDLE_GEMFILE'])

require 'rubygems'
require 'bundler/setup'

puts "getting Gem.bin_path()"
path = Gem.bin_path('my_gem', 'my_gem') # this is the line that causes the error
puts "Gem.bin_path(): #{path}"

load Gem.bin_path('my_gem', 'my_gem')
I'm at a loss for what to do next other than start over with a fresh gem. Any ideas?
 解决方案 
It looks like you're running into this issue https://github.com/bundler/bundler/issues/2838
Because Bundler remembers flags passed to install, if you ever ran bundle install --binstubs in the past, it will re-generate the binstubs on subsequent runs of bundle install. You can run bundle config --delete bin to delete that setting and then restore your original executable file.
                        
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