rake -D rails_admin
とやると
Reason: Incompatible library version: nokogiri.bundle requires version 11.0.0 or later, but libxml2.2.dylib provides version 10.0.0
のエラー発生。
URL: https://gist.github.com/vparihar01/5856524
のgist通りにやって再度
rake -D rails_admin
とやると
WARNING: Nokogiri was built against LibXML version 2.9.1, but has dynamically loaded 2.7.8
のエラー発生。
URL: http://moreta.github.io/2013/10/25/get-rid-of-nokogiri-libxml-warning-on-osx/
の通りにやり、
ただし「gem install nokogiri〜」の部分は
sudo gem install nokogiri -- --with-xml2-include=/usr/local/Cellar/libxml2/2.9.1/include/libxml2 --with-xml2-lib=/usr/local/Cellar/libxml2/2.9.1/lib --with-xslt-dir=/usr/local/Cellar/libxslt/1.1.28 --with-iconv-include=/usr/local/Cellar/libiconv/1.14/include --with-iconv-lib=/usr/local/Cellar/libiconv/1.14/lib
のようにsudoをつけつつ、1行に収まるように実行した。
$ rake -D rails_admin rake rails_admin:disable_initializer Disable rails_admin initializer rake rails_admin:install Install rails_admin rake rails_admin:prepare_ci_env CI env for Travis rake rails_admin:uninstall Uninstall rails_admin
と文句言われなくなった!