Remove tailwind.config.js from the generator

Tailwind v4 doesn't need a config file.

Author: flavorjones

README.md

@@ -59,13 +59,9 @@ You can also use a local (npm-based) installation if you prefer, please go to ht
 
 ### Configuration and commands
 
-#### Configuration file: `config/tailwind.config.js`
-
-You can customize the Tailwind build through the `config/tailwind.config.js` file, just like you would if Tailwind was running in a traditional node installation. All the first-party plugins are supported.
-
 #### Input file: `app/assets/stylesheets/application.tailwind.css`
 
-The installer will generate a Tailwind input file in `app/assets/stylesheets/application.tailwind.css`. This is where you import the plugins you want to use, and where you can setup your custom `@apply` rules.
+The installer will generate a Tailwind input file in `app/assets/stylesheets/application.tailwind.css`. This is where you import the plugins you want to use and where you can setup your custom `@apply` rules.
 
 #### Output file: `app/assets/builds/tailwind.css`
 

lib/install/application.tailwind.css

@@ -1,13 +1 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
-/*
-
-@layer components {
-  .btn-primary {
-    @apply py-2 px-4 bg-blue-200;
-  }
-}
-
-*/
+@import "tailwindcss";

lib/install/tailwind.config.js

@@ -28,11 +28,6 @@
   append_to_file(".gitignore", %(\n/app/assets/builds/*\n!/app/assets/builds/.keep\n))
 end
 
-unless Rails.root.join("config/tailwind.config.js").exist?
-  say "Add default config/tailwindcss.config.js"
-  copy_file "#{__dir__}/tailwind.config.js", "config/tailwind.config.js"
-end
-
 unless Rails.root.join("app/assets/stylesheets/application.tailwind.css").exist?
   say "Add default app/assets/stylesheets/application.tailwind.css"
   copy_file "#{__dir__}/application.tailwind.css", "app/assets/stylesheets/application.tailwind.css"

lib/install/tailwindcss.rb

@@ -10,7 +10,6 @@ def compile_command(debug: false, **kwargs)
           Tailwindcss::Ruby.executable(**kwargs),
           "-i", rails_root.join("app/assets/stylesheets/application.tailwind.css").to_s,
           "-o", rails_root.join("app/assets/builds/tailwind.css").to_s,
-          "-c", rails_root.join("config/tailwind.config.js").to_s,
         ]
 
         command << "--minify" unless (debug || rails_css_compressor?)

lib/tailwindcss/commands.rb

@@ -9,7 +9,7 @@ set -eux
 rm -f Gemfile.lock
 bundle remove actionmailer
 bundle add rails --skip-install ${RAILSOPTS:-}
-bundle install
+bundle install --prefer-local
 
 # do our work a directory with spaces in the name (#176, #184)
 rm -rf "My Workspace"
@@ -27,16 +27,10 @@ bundle add rails --skip-install ${RAILSOPTS:-}
 
 # use the tailwindcss-rails under test
 bundle add tailwindcss-rails --skip-install --path="../.."
-bundle install
+bundle install --prefer-local
 bundle show --paths
 bundle binstubs --all
 
-if bundle show | fgrep tailwindcss-ruby | fgrep -q "(4." ; then
-  TAILWIND4=1
-else
-  TAILWIND4=0
-fi
-
 # install tailwindcss
 bin/rails tailwindcss:install
 
@@ -50,12 +44,9 @@ task :still_here do
 end
 EOF
 
-if [[ $TAILWIND4 = 1 ]] ; then
-  cat > app/assets/stylesheets/application.tailwind.css <<EOF
-@import "tailwindcss";
+cat >> app/assets/stylesheets/application.tailwind.css <<EOF
 @theme { --color-special: #abc12399; }
 EOF
-fi
 
 bin/rails tailwindcss:build still_here | grep "Rake process did not exit early"
 
@@ -73,9 +64,7 @@ grep -q "Show this post" app/views/posts/index.html.erb
 bin/rails tailwindcss:build[verbose]
 grep -q "py-2" app/assets/builds/tailwind.css
 
-if [[ $TAILWIND4 = 1 ]] ; then
-  # TEST: contents include application.tailwind.css
-  grep -q "#abc12399" app/assets/builds/tailwind.css
-fi
+# TEST: contents include application.tailwind.css
+grep -q "#abc12399" app/assets/builds/tailwind.css
 
 echo "OK"

test/integration/user_journey_test.sh

@@ -15,7 +15,6 @@ def setup
       assert_kind_of(Array, actual)
       assert_equal(executable, actual.first)
       assert_includes(actual, "-i")
-      assert_includes(actual, "-c")
       assert_includes(actual, "-o")
     end
   end