How to switch smoothly to kdelibs4?

[Bradley Giesbrecht]

On Aug 25, 2010, at 2:44 PM, Scott Webster wrote:

> On Wed, Aug 25, 2010 at 2:39 PM, Marko Käning <MK- 
> MacPorts at techno.ms> wrote:
>> Hi Brad,
>>
>> I am afraid you are right about this:
>>> Nice feature but I think you need to keep an eye on versions of  
>>> deps. I don't know that "port deactivate kde4 && port activate  
>>> kde3" would revert kde3 deps that may have been upgraded to an  
>>> unusable version.
>>>
>>> Maybe keeping track of what was installed prior to upgrading could  
>>> be useful.
>>>
>>> port -q rdeps --no-build kdelibs3 | sed -e 's/^[[:space:]]*//' |  
>>> sort | xargs port -q installed >> rdeps_kdelibs3.txt.
>>
>> since as in my other post entitled "Port can't be deactivated,  
>> although deps also deactivated" described I seem to run into first  
>> signs of this trap.
>>
>
> I'll point out that I'm not a kde expert by any means, but as long as
> you keep track of what you are doing, I don't think this is an issue.
> You should be able to go back to the starting set of ports without a
> problem.  Of course if you upgrade some dependency and then rebuild a
> dependent port based on the new version, you can't necessarily revert
> the dependency and keep the new dependent, but you could just revert
> BOTH of them back to the "old" versions and you'd be back to your
> starting point.

Thats why having a list of deps/rdeps with version before deactivating  
is nice to have if you ever intend to revert.

Most ports don't have so many deps so it's much easier in those cases.

// Brad