fixing do_mysql hanging or install problems on mac os x

Just a quick tip:

If you’re having trouble getting do_mysql to install on Mac OS X. Try the following:

$ locate mysql_config
/usr/local/mysql/bin/mysql_config

The directory /usr/local/mysql above is your mysql directory. Then try to install do_mysql with the following command (split for readability):

$ gem install do_mysql -- \
   --with-mysql-dir="/usr/local/mysql/" \
   --with-mysql-config="/usr/local/mysql/bin/mysql_config"

This solution was found here. I experienced the problem while trying to get merb to run with datamapper on mysql.