Use new requirement syntax

Formula/appledoc.rb

@@ -3,9 +3,8 @@
 class LionOrNewer < Requirement
   fatal true
 
-  def satisfied?
-    MacOS.version >= :lion
-  end
+  satisfy MacOS.version >= :lion
+
   def message
     "Appledoc requires Mac OS X 10.7 (Lion) or newer."
   end

Formula/avian.rb

@@ -3,17 +3,15 @@
 class JdkInstalled < Requirement
   fatal true
 
+  satisfy { which 'javac' }
+
   def message; <<-EOS.undent
     A JDK is required.
 
     You can get the official Oracle installers from:
     http://www.oracle.com/technetwork/java/javase/downloads/index.html
     EOS
   end
-
-  def satisfied?
-    which 'javac'
-  end
 end
 
 class Avian < Formula

Formula/boost.rb

@@ -9,16 +9,15 @@ def boost_layout
 end
 
 class UniversalPython < Requirement
+  satisfy { archs_for_command("python").universal? }
+
   def message; <<-EOS.undent
     A universal build was requested, but Python is not a universal build
 
     Boost compiles against the Python it finds in the path; if this Python
     is not a universal build then linking will likely fail.
     EOS
   end
-  def satisfied?
-    archs_for_command("python").universal?
-  end
 end
 
 class Boost < Formula

Formula/boost149.rb

@@ -1,16 +1,15 @@
 require 'formula'
 
 class UniversalPython < Requirement
+  satisfy { archs_for_command("python").universal? }
+
   def message; <<-EOS.undent
     A universal build was requested, but Python is not a universal build
 
     Boost compiles against the Python it finds in the path; if this Python
     is not a universal build then linking will likely fail.
     EOS
   end
-  def satisfied?
-    archs_for_command("python").universal?
-  end
 end
 
 class Boost149 < Formula

Formula/cmake.rb

@@ -1,6 +1,10 @@
 require 'formula'
 
 class NoExpatFramework < Requirement
+  satisfy :build_env => false do
+    not File.exist? "/Library/Frameworks/expat.framework"
+  end
+
   def message; <<-EOS.undent
     Detected /Library/Frameworks/expat.framework
 
@@ -10,9 +14,6 @@ def message; <<-EOS.undent
     You may need to move this file out of the way to compile CMake.
     EOS
   end
-  def satisfied?
-    not File.exist? "/Library/Frameworks/expat.framework"
-  end
 end
 
 

Formula/cmu-sphinxbase.rb

@@ -3,6 +3,8 @@
 class HomebrewedPython < Requirement
   fatal true
 
+  satisfy(:build_env => false) { Formula.factory('python').installed? }
+
   def message; <<-EOS.undent
     Compiling against the system-provided Python will likely fail.
     The system-provided Python includes PPC support, which will cause a compiler
@@ -11,9 +13,6 @@ def message; <<-EOS.undent
     Patches to correct this issue are welcome.
     EOS
   end
-  def satisfied?
-    Formula.factory('python').installed?
-  end
 end
 
 class CmuSphinxbase < Formula

Formula/coq.rb

@@ -3,17 +3,17 @@
 class TransitionalMode < Requirement
   fatal true
 
+  satisfy do
+    # If not installed, it will install in the correct mode.
+    # If installed, make sure it is transitional instead of strict.
+    !which('camlp5') || `camlp5 -pmode 2>&1`.chomp == 'transitional'
+  end
+
   def message; <<-EOS.undent
     camlp5 must be compiled in transitional mode (instead of --strict mode):
       brew install camlp5
     EOS
   end
-  def satisfied?
-    # If not installed, it will install in the correct mode.
-    return true if not which('camlp5')
-    # If installed, make sure it is transitional instead of strict.
-    `camlp5 -pmode 2>&1`.chomp == 'transitional'
-  end
 end
 
 class Coq < Formula

Formula/cvs2svn.rb

@@ -3,6 +3,8 @@
 class PythonWithGdbm < Requirement
   fatal true
 
+  satisfy { quiet_system "python", "-c", "import gdbm" }
+
   def message; <<-EOS.undent
     The Python being used does not include gdbm support,
     but it is required to build this formula:
@@ -12,10 +14,6 @@ def message; <<-EOS.undent
     Homebrew's Python includes gdbm support.
     EOS
   end
-
-  def satisfied?
-    quiet_system "python", "-c", "import gdbm"
-  end
 end
 
 class Cvs2svn < Formula

Formula/diffpdf.rb

@@ -3,9 +3,8 @@
 class PopplerQt4 < Requirement
   fatal true
 
-  def satisfied?
-    poppler = Tab.for_formula 'poppler'
-    poppler.installed_with? '--with-qt4'
+  satisfy :build_env => false do
+    Tab.for_formula("poppler").installed_with? "--with-qt4"
   end
 
   def message; <<-EOS.undent

Formula/drizzle.rb

@@ -1,9 +1,7 @@
 require 'formula'
 
 class LionOrNewer < Requirement
-  def satisfied?
-    MacOS.version >= :lion
-  end
+  satisfy MacOS.version >= :lion
 
   def message
     "Drizzle requires Mac OS X 10.7 (Lion) or newer."

Formula/dsniff.rb

@@ -1,6 +1,8 @@
 require 'formula'
 
 class NoBdb5 < Requirement
+  satisfy(:build_env => false) { !Formula.factory("berkeley-db").installed? }
+
   def message; <<-EOS.undent
     This software can fail to compile when Berkeley-DB 5.x is installed.
     You may need to try:
@@ -9,10 +11,6 @@ def message; <<-EOS.undent
       brew link berkeley-db
     EOS
   end
-  def satisfied?
-    f = Formula.factory("berkeley-db")
-    not f.installed?
-  end
 end
 
 class Dsniff < Formula

Formula/elixir.rb

@@ -3,6 +3,8 @@
 class ErlangInstalled < Requirement
   fatal true
 
+  satisfy { which 'erl' }
+
   def message; <<-EOS.undent
     Erlang is required to install.
 
@@ -13,10 +15,6 @@ def message; <<-EOS.undent
       http://www.erlang.org/
     EOS
   end
-
-  def satisfied?
-    which 'erl'
-  end
 end
 
 class Elixir < Formula

Formula/ghc.rb

@@ -1,9 +1,7 @@
 require 'formula'
 
 class NeedsSnowLeopard < Requirement
-  def satisfied?
-    MacOS.version >= :snow_leopard
-  end
+  satisfy MacOS.version >= :snow_leopard
 
   def message; <<-EOS.undent
     GHC requires OS X 10.6 or newer. The binary releases no longer work on

Formula/git-hg.rb

@@ -1,6 +1,8 @@
 require 'formula'
 
 class HgInstalled < Requirement
+  satisfy { which 'hg' }
+
   def message; <<-EOS.undent
     Mercurial is required to use this software.
 
@@ -11,9 +13,6 @@ def message; <<-EOS.undent
       http://mercurial.selenic.com/
     EOS
   end
-  def satisfied?
-    which 'hg'
-  end
 end
 
 class GitHg < Formula

Formula/google-js-test.rb

@@ -1,13 +1,11 @@
 require 'formula'
 
 class NeedsSnowLeopard < Requirement
+  satisfy MacOS.version >= :snow_leopard
+
   def message
     "Google JS Test requires Mac OS X 10.6 (Snow Leopard) or newer."
   end
-
-  def satisfied?
-    MacOS.version >= :snow_leopard
-  end
 end
 
 class GoogleJsTest < Formula

Formula/hyperestraier.rb

@@ -7,9 +7,7 @@ def initialize
     @mecab_ipadic_installed = Formula.factory('mecab-ipadic').installed?
   end
 
-  def satisfied?
-    @mecab_ipadic_installed && mecab_dic_charset == 'euc'
-  end
+  satisfy { @mecab_ipadic_installed && mecab_dic_charset == 'euc' }
 
   def message
     if @mecab_ipadic_installed

Formula/jstalk.rb

@@ -1,9 +1,7 @@
 require 'formula'
 
 class NeedsSnowLeopard < Requirement
-  def satisfied?
-    MacOS.version >= :snow_leopard
-  end
+  satisfy MacOS.version >= :snow_leopard
 
   def message
     "jstalk requires Mac OS X 10.6 or newer"

Formula/mlton.rb

@@ -5,6 +5,8 @@
 # would require an existing ML compiler/interpreter for bootstrapping.
 
 class StandardHomebrewLocation < Requirement
+  satisfy HOMEBREW_PREFIX.to_s == "/usr/local"
+
   def message; <<-EOS.undent
     mlton won't work outside of /usr/local
 
@@ -13,9 +15,6 @@ def message; <<-EOS.undent
     will be unable to find GMP.
     EOS
   end
-  def satisfied?
-    HOMEBREW_PREFIX.to_s == "/usr/local"
-  end
 end
 
 class Mlton < Formula

Formula/mongodb.rb

@@ -3,9 +3,7 @@
 class SixtyFourBitRequired < Requirement
   fatal true
 
-  def satisfied?
-    MacOS.prefer_64_bit?
-  end
+  satisfy MacOS.prefer_64_bit?
 
   def message; <<-EOS.undent
     32-bit MongoDB binaries are no longer available.

Formula/mu.rb

@@ -4,7 +4,7 @@ class Emacs23Installed < Requirement
   fatal true
   env :userpaths
 
-  def satisfied?
+  satisfy do
     `emacs --version 2>/dev/null` =~ /^GNU Emacs (\d{2})/
     $1.to_i >= 23
   end

Formula/mupdf.rb

@@ -3,9 +3,7 @@
 class NeedsSnowLeopard < Requirement
   fatal true
 
-  def satisfied?
-    MacOS.version >= :snow_leopard
-  end
+  satisfy MacOS.version >= :snow_leopard
 
   def message; <<-EOS.undent
     The version of Freetype that comes with Leopard is too old to build MuPDF

Formula/mysql-connector-odbc.rb

@@ -3,6 +3,8 @@
 class MySqlInstalled < Requirement
   fatal true
 
+  satisfy { which 'mysql_config' }
+
   def message; <<-EOS.undent
     MySQL is required to install.
 
@@ -17,9 +19,6 @@ def message; <<-EOS.undent
       http://dev.mysql.com/downloads/mysql/
     EOS
   end
-  def satisfied?
-    which 'mysql_config'
-  end
 end
 
 class MysqlConnectorOdbc < Formula

Formula/node.rb

@@ -1,16 +1,19 @@
 require 'formula'
 
 class PythonVersion < Requirement
+  env :userpaths
+
+  satisfy { `python -c 'import sys;print(sys.version[:3])'`.strip.to_f >= 2.6 }
+
   def message; <<-EOS.undent
     Node's build system, gyp, requires Python 2.6 or newer.
     EOS
   end
-  def satisfied?
-    `python -c 'import sys;print(sys.version[:3])'`.strip.to_f >= 2.6
-  end
 end
 
 class NpmNotInstalled < Requirement
+  fatal true
+
   def modules_folder
     "#{HOMEBREW_PREFIX}/lib/node_modules"
   end
@@ -28,18 +31,14 @@ def message; <<-EOS.undent
     EOS
   end
 
-  def satisfied?
+  satisfy :build_env => false do
     begin
       path = Pathname.new("#{modules_folder}/npm")
       not path.realpath.to_s.include?(HOMEBREW_CELLAR)
     rescue Exception => e
       true
     end
   end
-
-  def fatal?
-    true
-  end
 end
 
 class Node < Formula