handle only subports install files

[Joshua Root]

On 2012-3-20 05:19 , Bradley Giesbrecht wrote:
> 
> On Mar 19, 2012, at 10:36 AM, Joshua Root wrote:
> 
>> On 2012-3-20 04:32 , Bradley Giesbrecht wrote:
>>> Does anyone have an example of a better way to handle the primary port not installing files?
>>>
>>> Portfile:
>>> ...
>>> name mysql-connector-cpp
>>> if {$subport == $name} {
>>>   pre-fetch {
>>>       ui_msg "Stub port: Choose one of \
>>>           mysql5-connector-cpp, \
>>>           mysql55-connector-cpp, \
>>>           mariadb-connector-cpp, \
>>>           percona-connector-cpp.
>>>           "
>>>       return
>>>   }
>>> }
>>> ...
>>
>> "Don't do that?" There's no point creating a port that can't be installed.
> 
> My question was for a better way :)
> 
> Is this better?
> if {$subport == $name} {
>     set subport "mysql55-connector-cpp"
> }

Again, why have a useless top-level port in the first place?

- Josh