Rails console を実行すると Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError) が発生するようになった
brew upgrade を実行したところ、bin/rails console を実行する際にエラーが発生するようになりました。
- macOS Mojave 10.14
- Ruby 2.6.1
- Rails 5.2.2
- readline 8.0.0
readline のメジャーバージョンが上がって、ライブラリのパスが変わったのが問題だったようです。
% bin/rails c
Traceback (most recent call last):
42: from bin/rails:4:in `<main>'
41: from /.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
40: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
39: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
38: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
37: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
36: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
35: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
34: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
33: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/commands.rb:18:in `<main>'
32: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command.rb:44:in `invoke'
31: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command.rb:70:in `find_by_namespace'
30: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command/behavior.rb:79:in `lookup'
29: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command/behavior.rb:79:in `each'
28: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command/behavior.rb:80:in `block in lookup'
27: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command/behavior.rb:80:in `each'
26: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/command/behavior.rb:84:in `block (2 levels) in lookup'
25: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
24: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
23: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
22: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
21: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
20: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
19: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
18: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
17: from /path/to/.bundle/gems/railties-5.2.2/lib/rails/commands/console/console_command.rb:4:in `<main>'
16: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
15: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
14: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
13: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
12: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
11: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
10: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
9: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
8: from /Users/chocoby/.rbenv/versions/2.6.1/lib/ruby/2.6.0/irb/completion.rb:10:in `<main>'
7: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
6: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
5: from /path/to/.bundle/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
4: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
3: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
2: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in `register'
1: from /path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/path/to/.bundle/gems/bootsnap-1.4.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require': dlopen(/Users/chocoby/.rbenv/versions/2.6.1/lib/ruby/2.6.0/x86_64-darwin17/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)
Referenced from: /Users/chocoby/.rbenv/versions/2.6.1/lib/ruby/2.6.0/x86_64-darwin17/readline.bundle
Reason: image not found - /Users/chocoby/.rbenv/versions/2.6.1/lib/ruby/2.6.0/x86_64-darwin17/readline.bundle調べてみると libreadline.dylib のシンボリックリンクを貼り直すとか、rb-readline gem をインストールするなどの情報がありましたが、
素直に Ruby を再インストールすることで解決できました。
rbenv で Ruby を再インストールする (自分の環境は 2.6.1):
$ rbenv install 2.6.1
rbenv: /Users/chocoby/.rbenv/versions/2.6.1 already exists
continue with installation? (y/N)
ruby-build: use openssl from homebrew
Downloading ruby-2.6.1.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.1.tar.bz2
Installing ruby-2.6.1...
ruby-build: use readline from homebrew
Installed ruby-2.6.1 to /Users/chocoby/.rbenv/versions/2.6.1一度 .bundle ディレクトリを全削除 (環境によっては vendor/bundle ディレクトリなど) し、Gem を再インストールする:
% rm -rf .bundle
% bundle install再度 bin/rails console を実行したところ、Rails console を起動できました。
% bin/rails c
Loading development environment (Rails 5.2.2)
[1] pry(main)>