Add hooks for pouring bottles.

This should give us a bit of control over what e.g. Boxen are doing
whilst at the same time stopping us from accidentally breaking each
other's stuff every so often.

I'm aware this may be somewhat controversial so I'm open to other
approaches.

1 files changed, 31 insertions, 0 deletions

diff --git a/Library/Homebrew/hooks/bottles.rb b/Library/Homebrew/hooks/bottles.rb
new file mode 100644
index 000000000..de321c09a
--- /dev/null
+++ b/Library/Homebrew/hooks/bottles.rb
@@ -0,0 +1,31 @@
+# Boxen (and perhaps others) want to override our bottling infrastructure so
+# they can avoid declaring checksums in formulae files.
+# Instead of periodically breaking their monkeypatches let's add some hooks that
+# we can query to allow their own behaviour.
+
+# PLEASE DO NOT EVER RENAME THIS CLASS OR ADD/REMOVE METHOD ARGUMENTS!
+module Homebrew
+  module Hooks
+    module Bottles
+      def self.setup_formula_has_bottle &block
+        @has_bottle = block
+        true
+      end
+
+      def self.setup_pour_formula_bottle &block
+        @pour_bottle = block
+        true
+      end
+
+      def self.formula_has_bottle?(formula)
+        return false unless @has_bottle
+        @has_bottle.call formula
+      end
+
+      def self.pour_formula_bottle(formula)
+        return false unless @pour_bottle
+        @pour_bottle.call formula
+      end
+    end
+  end
+end