macOSでMastodonを走らせてみる。https://qiita.com/zunda/items/5f8a0a8ee1e7c297dcd4 も参照してみてください。

prepare-and-start.txt

入れるのが大変なGemは入れない:

$ curl -o - https://gist.githubusercontent.com/zunda/c5f50abc1a2139d0edc1a3e6ddae2c84/raw/2a825d75fa64e5986abf685a091fc9c3ee3bdedf/run-mastodon-on-macos.patch | patch

PostgreSQLを走らせておいて、

$ export RAILS_ENV=development
$ bundle install --path=vendor/bundle
$ bundle exec rake assets:precompile
$ bundle exec rake db:drop
$ bundle exec rake db:setup
$ bundle exec rake db:migrate
$ bundle exec bin/tootctl accounts create zunda --email=zundan@gmail.com
OK
New password: ********************************
$ redis-server &
$ npm start &
$ bundle exec rails s

これで http://localhost:3000/ からログインできる。

run-mastodon-on-macos.patch

diff --git a/Gemfile b/Gemfile
index 7440d5c5b..d82cb650a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -29,7 +29,6 @@ gem 'browser'
 gem 'charlock_holmes', '~> 0.7.6'
 gem 'iso-639'
 gem 'chewy', '~> 5.0'
-gem 'cld3', '~> 3.2.0'
 gem 'devise', '~> 4.5'
 gem 'devise-two-factor', '~> 3.0'

@@ -53,7 +52,6 @@ gem 'http', '~> 3.3'
 gem 'http_accept_language', '~> 2.1'
 gem 'http_parser.rb', '~> 0.6', git: 'https://github.com/tmm1/http_parser.rb', ref: '54b17ba8c7d8d20a16dfc65d1775241833219cf2'
 gem 'httplog', '~> 1.1'
-gem 'idn-ruby', require: 'idn'
 gem 'kaminari', '~> 1.1'
 gem 'link_header', '~> 0.0'
 gem 'mime-types', '~> 3.2', require: 'mime/types/columnar'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3d82149b8..2b64a36fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -142,8 +142,6 @@ GEM
       elasticsearch (>= 2.0.0)
       elasticsearch-dsl
     chunky_png (1.3.10)
-    cld3 (3.2.2)
-      ffi (>= 1.1.0, < 1.10.0)
     climate_control (0.2.0)
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
@@ -281,7 +279,6 @@ GEM
       rails-i18n
       rainbow (>= 2.2.2, < 4.0)
       terminal-table (>= 1.5.1)
-    idn-ruby (0.1.0)
     ipaddress (0.8.3)
     iso-639 (0.2.8)
     jaro_winkler (1.5.1)
@@ -668,7 +665,6 @@ DEPENDENCIES
   capybara (~> 3.11)
   charlock_holmes (~> 0.7.6)
   chewy (~> 5.0)
-  cld3 (~> 3.2.0)
   climate_control (~> 0.2)
   derailed_benchmarks
   devise (~> 4.5)
@@ -692,7 +688,6 @@ DEPENDENCIES
   http_parser.rb (~> 0.6)!
   httplog (~> 1.1)
   i18n-tasks (~> 0.9)
-  idn-ruby
   iso-639
   json-ld (~> 2.2)
   kaminari (~> 1.1)
diff --git a/app/lib/language_detector.rb b/app/lib/language_detector.rb
index 58c8e2069..e4d8f63d3 100644
--- a/app/lib/language_detector.rb
+++ b/app/lib/language_detector.rb
@@ -5,10 +5,6 @@ class LanguageDetector

   CHARACTER_THRESHOLD = 140

-  def initialize
-    @identifier = CLD3::NNetLanguageIdentifier.new(1, 2048)
-  end
-
   def detect(text, account)
     input_text = prepare_text(text)
     return if input_text.blank?
@@ -17,9 +13,7 @@ class LanguageDetector
   end

   def language_names
-    @language_names =
-      CLD3::TaskContextParams::LANGUAGE_NAMES.map { |name| iso6391(name.to_s).to_sym }
-                                             .uniq
+    [:en]
   end

   private
@@ -35,8 +29,7 @@ class LanguageDetector
   def detect_language_code(text)
     return if unreliable_input?(text)

-    result = @identifier.find_language(text)
-    iso6391(result.language.to_s).to_sym if result.reliable?
+    return :en
   end

   def iso6391(bcp47)