Rails：从 github 下载后，Bundle Install 无法安装必要的 gem

Question

I have cloned from my github account a repo, I am getting the following error, when i run bundle install. i cant understand the reason for it. The repo had been pushed from my pc and now i am cloning it to my laptop

An error occurred while installing sassc (2.2.1), and Bundler cannot continue.
Make sure that `gem install sassc -v '2.2.1' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  sass-rails was resolved to 6.0.0, which depends on
    sassc-rails was resolved to 2.1.2, which depends on
      sassc

Answer 1

This is a known issue: https://github.com/sass/sassc-ruby/issues/153

Solution:

1. add gem 'sassc', '~> 2.1.0' to your gemfile.

2. run bundle install

This will force it to use sassc version 2.1.0 which doesn't have the compile issue with Rails 6.

---

As a tip, whenever a gem fails to install or conflicts with another gem, it's a good idea to go check out the gem itself. 99% of the time, the code is on GitHub.

If you're new to this, try following these steps:

1. Gems in your gemfile come from https://rubygems.org by default, so visit that site and search for the gem exactly as it's named in your gemfile. In this case, it's here: https://rubygems.org/gems/sassc

2. On the gem's info page, find links on the righthand side. Click 'homepage'. For sassc, it takes you to this URL: https://github.com/sass/sassc-ruby

3. Click on the issues tab and look for anything related to the thing you're struggling with. In this case, I found about 3. Read through those issues and see if people have posted solutions or work-arounds.

Happy gem hunting!