はじめに

Ruby界隈で話題になっているHanamiというフレームワーク。ﾖｯｼｬｲｸｿﾞ!wと思ってまずはやってみた。

コマンドを叩いてみると...

$ gem install hanami
$ hanami new app
$ bundle install

fmfm。こりゃRailsのおまじないとおんなじ感じでいけそうやん。あとはrails s よろしく hanami s やなと思って叩いてみたところ...

$ bundle exec hanami server
wrong number of arguments (given 1, expected 2)
/Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/dotenv-2.3.0/lib/dotenv/parser.rb:33:in `call'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/env.rb:59:in `load!'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/environment.rb:493:in `set_application_env_vars!'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/environment.rb:475:in `set_env_vars!'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/environment.rb:197:in `block in initialize'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/environment.rb:197:in `synchronize'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/environment.rb:197:in `initialize'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/cli/commands/command.rb:76:in `new'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/lib/hanami/cli/commands/command.rb:76:in `call'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-cli-0.2.0/lib/hanami/cli.rb:57:in `call'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/hanami-1.2.0/bin/hanami:6:in `<top (required)>'
    /Users/user/.rbenv/versions/2.5.0/bin/hanami:23:in `load'
    /Users/user/.rbenv/versions/2.5.0/bin/hanami:23:in `<top (required)>'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli/exec.rb:75:in `load'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli/exec.rb:75:in `kernel_load'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli/exec.rb:28:in `run'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli.rb:424:in `exec'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/vendor/thor/lib/thor.rb:387:in `dispatch'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli.rb:27:in `dispatch'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/vendor/thor/lib/thor/base.rb:466:in `start'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/cli.rb:18:in `start'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/exe/bundle:30:in `block in <top (required)>'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/lib/bundler/friendly_errors.rb:122:in `with_friendly_errors'
    /Users/user/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bundler-1.16.1/exe/bundle:22:in `<top (required)>'
    /Users/user/.rbenv/versions/2.5.0/bin/bundle:23:in `load'
    /Users/user/.rbenv/versions/2.5.0/bin/bundle:23:in `<main>'

ファッ！！？

解決策

Hanamiのコミュニティにて、dotenv というgemのバージョン指定がよくない模様。たしかに/dotenv/parser.rbが悪さしているっぽい。
hanami/chat

Gemfileのdotenv指定を2.2.2に変更する

Gemfile

group :test, :development do
  gem 'dotenv', '~> 2.2.2'
end

からの、起動！

$ bundle exec hanami server
[2018-04-23 21:03:04] INFO  WEBrick 1.4.2
[2018-04-23 21:03:04] INFO  ruby 2.5.0 (2017-12-25) [x86_64-darwin16]
[2018-04-23 21:03:04] INFO  WEBrick::HTTPServer#start: pid=10757 port=2300