heroku - Heroku db:pull エラー "LoadError: そのようなファイルを読み込めません -- sqlite3 (Sequel::AdapterNotFound)"

Question

MacBook 開発環境から問題なく heroku db:pull を実行できますが、Windows 7 マシンでコマンドを実行すると、次のエラーが発生します。

C:/Program Files (x86)/Heroku/ruby-.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': LoadError: cannot load such file -- sqlite3 (Sequel::AdapterNotFound)
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/adapters/sqlite.rb:1:in `<top (required)>'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:249:in `block in tsk_require'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:72:in `block in check_requiring_thread'
    from <internal:prelude>:10:in `synchronize'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:69:in `check_requiring_thread'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:249:in `tsk_require'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/database/connecting.rb:25:in `adapter_class'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/database/connecting.rb:54:in `connect'
    from C:/Program Files (x86)/Heroku/ruby-1.9.2/lib/ruby/gems/1.9.1/gems/sequel-3.20.0/lib/sequel/core.rb:119:in `connect'
    from C:/Program Files (x86)/Heroku/vendor/gems/taps-0.3.23/lib/taps/schema.rb:69:in `load_indexes'
    from C:/Program Files (x86)/Heroku/vendor/gems/taps-0.3.23/bin/schema:40:in `<main>'

Answer 1

この同じ問題に遭遇しました。私は既にsqlite3gem を追加していましたが、間違って Sequel アダプターを呼び出しましたsqlite3。正しいアダプター名は単にsqlite.

Answer 2

いくつかの宝石をインストールしてみます：

gem install sqlite3
gem install heroku