Use constants for LinkedKegs/PinnedKegs/Locks.

These definitions are scattered throughout the codebase which makes it
hard to refactor them later (my goal is to move them outside of
HOMEBREW_LIBRARY). Unify their definitions for clearer code and easier
movement later.

1 files changed, 3 insertions, 5 deletions

diff --git a/Library/Homebrew/formula_pin.rb b/Library/Homebrew/formula_pin.rb
index 0650c806f..18352c93b 100644
--- a/Library/Homebrew/formula_pin.rb
+++ b/Library/Homebrew/formula_pin.rb
@@ -1,18 +1,16 @@
 require "keg"
 
 class FormulaPin
-  PINDIR = Pathname.new("#{HOMEBREW_LIBRARY}/PinnedKegs")
-
   def initialize(f)
     @f = f
   end
 
   def path
-    Pathname.new("#{PINDIR}/#{@f.name}")
+    HOMEBREW_PINNED_KEGS/@f.name
   end
 
   def pin_at(version)
-    PINDIR.mkpath
+    HOMEBREW_PINNED_KEGS.mkpath
     version_path = @f.rack.join(version)
     path.make_relative_symlink(version_path) unless pinned? || !version_path.exist?
   end
@@ -23,7 +21,7 @@ class FormulaPin
 
   def unpin
     path.unlink if pinned?
-    PINDIR.rmdir_if_possible
+    HOMEBREW_PINNED_KEGS.rmdir_if_possible
   end
 
   def pinned?