fix cheatsh

Formula/cheatsh.rb

@@ -1,41 +1,32 @@
 class Cheatsh < Formula
-  desc    "a terminal cheat sheet for linux"
+  desc     "Terminal cheat sheet TUI for commands you keep forgetting"
   homepage "https://github.com/agresdominik/cheat_sheet"
-  version "0.1.2"
-  url     "https://github.com/agresdominik/cheat_sheet/archive/refs/tags/v0.1.2.tar.gz"
-  sha256  "b6df830340da71fbe85d972c82432479f8c4d45f821cad489c6ef2e719d88152"
-  license "GPL-3.0"                                      
+  url      "https://github.com/agresdominik/cheat_sheet/archive/refs/tags/v0.1.2.tar.gz"
+  sha256   "b6df830340da71fbe85d972c82432479f8c4d45f821cad489c6ef2e719d88152"
+  license  "GPL-3.0-only"
 
   depends_on "go" => :build
 
   def install
-    system "make", "install",
-        "PREFIX=#{prefix}",
-        "SYSCONFDIR=#{etc}/cheatsh"
-  end
-
-  def post_install
-    config_dir = "#{Dir.home}/.config/cheatsh"
-    FileUtils.mkdir_p config_dir
-
-    ["commands.json", "commands_template.json"].each do |f|
-      src  = "#{etc}/cheatsh/#{f}"
-      dest = "#{config_dir}/#{f}"
-      FileUtils.cp(src, dest)
-    end
+    system "go", "build", *std_go_args(output: bin/"cheatsh"), "./src"
+    pkgshare.install "data/commands.json", "data/commands_template.json"
   end
 
   def caveats
     <<~EOS
-      Default config files are stored in:
-        #{etc}/cheatsh/
- 
-      To set up your config on first run:
-        cp #{etc}/cheatsh/commands_template.json ~/.config/cheatsh/
+      cheatsh uses the bundled command list by default (updated on `brew upgrade`):
+        #{opt_pkgshare}/commands.json
+
+      To use your own list, copy the template and pass it explicitly:
+        cp #{opt_pkgshare}/commands_template.json ~/my-commands.json
+        cheatsh --config ~/my-commands.json
+
+      Copying to the clipboard needs a backend on Linux:
+        wl-clipboard (Wayland) or xsel / xclip (X11). macOS works out of the box.
     EOS
   end
 
   test do
-    system "#{bin}/myapp", "--help"              
+    assert_match "Usage", shell_output("#{bin}/cheatsh --help")
   end
 end