rails 5.2 啟動警告 warning: previous definition of VERSION was here和bootsnap

c3tc3tc3t發表於2018-11-08
AIboot

bootsnap依賴問題

1 You should add gem 'bootsnap' to your gemfile to install it or remove the line require 'bootsnap/setup' in config/boot.rb

or

1 using rails new myapp --skip-bootsnap
1 If the app doesn’t contain the bootsnap gem already then we will need to add it manually since rails app:update task adds the bootsnap/setup line to boot.rb regardless of its presence in the Gemfile.

 

or

1 https://blog.bigbinary.com/2018/01/01/rails-5-2-adds-bootsnap-to-the-app-to-speed-up-boot-time.html

 

 

warning: previous definition of VERSION was here

 

1 https://github.com/ruby/fileutils/issues/22
 1 Ran into this, and the solution here works: https://stackoverflow.com/questions/51334732/rails-5-2-0-with-ruby-2-5-1-console-warning-already-initialized-constant
 2 
 3 I understand 1.0.2 stays installed as the default, 1.1.0 being installed too. Hence the issue.
 4 
 5 When installed automatically, I get the warnings. Following command shows (new rails app, 2.5.1) :
 6 
 7 gem list | grep fileutils
 8 fileutils (1.1.0, default: 1.0.2)
 9 
10 Then doing:
11 
12 gem uninstall fileutils
13 gem update fileutils --default
14 
15 makes the warnings disappear. And btw, it shows:
16 
17 gem list | grep fileutils
18 fileutils (default: 1.1.0, default: 1.0.2)
19 
20 Hope it will help fixing this annoyance. Sorry I cannot be of more help, not really a wizard with those versioning topics!

 

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