Adding data sources for unixODBC/isql on Mac OSX Lion

I have installed unixODBC from source and mysql-odbc connector from .dmg installer on Mac OSX Lion. This was done a while ago, and at that time I successfully installed a data source (let's call it foo). Now I am trying to add another data source (DSN). I've done this through both ODBC Manager and the command-line tool myodbc-installer given with the tar bundle of the mysql-odbc connector from the mysql website. An entry shows up in /Library/ODBC/odbc.ini, which looks like this:

[ODBC Data Sources]bar = MySQL ODBC 5.1 Driver[ODBC]Trace         = 0TraceAutoStop = 0TraceFile     = TraceLibrary  = [myodbc]Driver = /usr/local/lib/libmyodbc5.soSERVER = localhostPORT   = 3306[bar]Driver      = /usr/local/lib/libmyodbc5.soDescription = DATABASE    = bar

However, isql fails to find it:

anitya:Preferences neil$ isql bar bar bar -v[IM002][unixODBC][Driver Manager]Data source name not found, and no default driver specified[ISQL]ERROR: Could not SQLConnect

Weird thing is, the old DSN foo, which is not to be seen in /Library/ODBC/odbc.ini or /etc/odbc.ini, works fine:

anitya:Preferences neil$ isql foo foo foo+---------------------------------------+| Connected!                            ||                                       || sql-statement                         || help [tablename]                      || quit                                  ||                                       |+---------------------------------------+SQL> 

I'm miffed about where the DSN entries need to be entered on OSX Lion to be found by isql. Thanks in advance for your help!