Homebrew 4.3.0 deprecation/disable/removals.

The usual pass of deprecating/disabling/removing code for the next
minor Homebrew release.

Library/.rubocop.yml

@@ -112,7 +112,6 @@ Layout/LineLength:
       ' url "',
       ' mirror "',
       " plist_options ",
-      ' appcast "',
       ' executable: "',
       ' font "',
       ' homepage "',

Library/Homebrew/cask/cask_loader.rb

@@ -315,7 +315,6 @@ def load(config:)
           end
 
           url json_cask[:url], **json_cask.fetch(:url_specs, {}) if json_cask[:url].present?
-          appcast json_cask[:appcast] if json_cask[:appcast].present?
           json_cask[:name]&.each do |cask_name|
             name cask_name
           end

Library/Homebrew/cask/dsl.rb

@@ -248,16 +248,6 @@ def url(*args, **options, &block)
       end
     end
 
-    # Sets the cask's appcast URL.
-    #
-    # @api public
-    def appcast(*args, **kwargs)
-      set_unique_stanza(:appcast, args.empty? && kwargs.empty?) do
-        odisabled "the `appcast` stanza", "the `livecheck` stanza"
-        true
-      end
-    end
-
     # Sets the cask's container type or nested container path.
     #
     # ### Examples
@@ -417,7 +407,7 @@ def caveats(*strings, &block)
     end
 
     def discontinued?
-      # odeprecated "`discontinued?`", "`deprecated?` or `disabled?`"
+      odeprecated "`discontinued?`", "`deprecated?` or `disabled?`"
       @caveats&.discontinued? == true
     end
 

Library/Homebrew/cask/dsl/caveats.rb

@@ -164,7 +164,7 @@ def eval_caveats(&block)
       end
 
       caveat :discontinued do
-        # odeprecated "`caveats :discontinued`", "`deprecate!`"
+        odeprecated "`caveats :discontinued`", "`deprecate!`"
         @discontinued = true
         <<~EOS
           #{@cask} has been officially discontinued upstream.

Library/Homebrew/cask/dsl/postflight.rb

@@ -8,10 +8,6 @@ class DSL
     # Class corresponding to the `postflight` stanza.
     class Postflight < Base
       include Staged
-
-      def suppress_move_to_applications(**_options)
-        odisabled "`Cask::DSL::Postflight#suppress_move_to_applications`"
-      end
     end
   end
 end

Library/Homebrew/caveats.rb

@@ -152,15 +152,11 @@ def elisp_caveats
   end
 
   def service_caveats
-    return if !formula.plist && !formula.service? && !Utils::Service.installed?(formula) && !keg&.plist_installed?
+    return if !formula.service? && !Utils::Service.installed?(formula) && !keg&.plist_installed?
     return if formula.service? && !formula.service.command? && !Utils::Service.installed?(formula)
 
     s = []
 
-    return <<~EOS if !Utils::Service.launchctl? && formula.plist
-      #{Formatter.warning("Warning:")} #{formula.name} provides a launchd plist which can only be used on macOS!
-    EOS
-
     # Brew services only works with these two tools
     return <<~EOS if !Utils::Service.systemctl? && !Utils::Service.launchctl? && formula.service.command?
       #{Formatter.warning("Warning:")} #{formula.name} provides a service which can only be used on macOS or systemd!