1 files changed, 24 insertions, 9 deletions
diff --git a/Library/Formula/mydumper.rb b/Library/Formula/mydumper.rb
index 5e897c051..0e3d9f7af 100644
--- a/Library/Formula/mydumper.rb
+++ b/Library/Formula/mydumper.rb
@@ -1,25 +1,40 @@
 require 'formula'
 
+class MySqlInstalled < Requirement
+  def message; <<-EOS.undent
+    MySQL is required to install.
+
+    You can install this with Homebrew using:
+      brew install mysql-connector-c
+        For MySQL client libraries only.
+
+      brew install mysql
+        For MySQL server.
+
+    Or you can use an official installer from:
+      http://dev.mysql.com/downloads/mysql/
+    EOS
+  end
+  def satisfied?
+    which 'mysql_config'
+  end
+  def fatal?
+    true
+  end
+end
+
 class Mydumper < Formula
   homepage 'http://www.mydumper.org/'
   url 'http://launchpadlibrarian.net/77098505/mydumper-0.5.1.tar.gz'
   md5 'b4df42dfe23f308ab13eb6ecb73a0d21'
 
+  depends_on MySqlInstalled.new
   depends_on 'pkg-config' => :build
   depends_on 'cmake' => :build
   depends_on 'glib'
   depends_on 'pcre'
 
   def install
-    unless which 'mysql_config'
-      opoo "`mysql_config` was not found"
-      puts "This software requires the MySQL client libraries."
-      puts "You can install them via Homebrew with one of these:"
-      puts "  brew install mysql-connector-c"
-      puts "  brew install mysql [--client-only]"
-      puts "Without the client libraries, this formula will fail to compile."
-    end
-
     system "cmake #{std_cmake_parameters} ."
     system "make install"
   end