Major Description
The following profile does not activate on MacosX:
<profile>
<id>activate-mac</id>
<activation>
<os>
<name>Mac OS X</name>
</os>
</activation>
</profile>
"Mac OS X" matches the value returned when querying ${os.name}.
If you lowercase the name, the profile is activated:
<profile>
<id>activate-mac</id>
<activation>
<os>
<name>mac os x</name>
</os>
</activation>
</profile>
This is counter intuitive, as one would expect the exact cut and pasted (capitalised) ${os.name} value to work as an OS name in a profile.