flutter: add Linux support

Signed-off-by: Patrick Linnane <[email protected]>

Author: izzalDev

Casks/f/flutter.rb

@@ -1,18 +1,31 @@
+# typed: false
+
 cask "flutter" do
   arch arm: "_arm64"
+  os macos: "macos", linux: "linux"
+
+  file_extension = on_system_conditional macos: "zip", linux: "tar.xz"
 
   version "3.38.0"
-  sha256 arm:   "f3ddfeca3d44efd3de49ae293238c7c80b967a1d17529abae744c5ad9b5c2c5e",
-         intel: "d60297964c1079c29fb5a62fb9eccd249da45fddb7df15f6914b37af723dbacf"
 
-  url "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos#{arch}_#{version}-stable.zip",
-      verified: "storage.googleapis.com/flutter_infra_release/releases/stable/macos/"
+  on_macos do
+    sha256 arm:   "f3ddfeca3d44efd3de49ae293238c7c80b967a1d17529abae744c5ad9b5c2c5e",
+           intel: "d60297964c1079c29fb5a62fb9eccd249da45fddb7df15f6914b37af723dbacf"
+  end
+
+  on_linux do
+    sha256 "146df531f9ac6a11a918013c1a70faafc053d4811c8cb69a413fd70748d51c3d"
+    depends_on arch: :x86_64
+  end
+
+  url "https://storage.googleapis.com/flutter_infra_release/releases/stable/#{os}/flutter_#{os}#{arch}_#{version}-stable.#{file_extension}",
+      verified: "storage.googleapis.com/flutter_infra_release/releases/stable/#{os}/"
   name "Flutter SDK"
   desc "UI toolkit for building applications for mobile, web and desktop"
   homepage "https://flutter.dev/"
 
   livecheck do
-    url "https://storage.googleapis.com/flutter_infra_release/releases/releases_macos.json"
+    url "https://storage.googleapis.com/flutter_infra_release/releases/releases_#{os}.json"
     strategy :json do |json|
       json["releases"]&.map do |release|
         next if release["channel"] != "stable"
@@ -24,9 +37,9 @@
 
   auto_updates true
 
-  suite "flutter", target: "#{HOMEBREW_PREFIX}/share/flutter"
   binary "flutter/bin/dart"
   binary "flutter/bin/flutter"
+  artifact "flutter", target: "#{HOMEBREW_PREFIX}/share/flutter"
 
   zap trash: "~/.flutter"
 end