Trouble upgrading Macports to Sierra

[Chris Jones]

> On 30 Mar 2017, at 6:02 pm, Barrie Stott <zen146410 at zen.co.uk> wrote:
> 
>> On 30 Mar 2017, at 16:38, Chris Jones <jonesc at hep.phy.cam.ac.uk> wrote:
>> 
>> Hi,
>> 
>>> On 30/03/17 16:32, Barrie Stott wrote:
>>> I recently installed Sierra and am now coming to migrating my MacPorts ports using https://trac.macports.org/wiki/Migration. Steps 1 and 2 seemed ok but step 3 failed  with the following information:
>>> 
>>> gbs:macports $ port -qv installed > myports.txt
>>> Error: Current platform "darwin 16" does not match expected platform "darwin 15"
>>> Error: If you upgraded your OS, please follow the migration instructions: https://trac.macports.org/wiki/Migration
>>> Error: /opt/local/bin/port: Failed to initialize MacPorts, OS platform mismatch
>>> gbs:macports $
>>> 
>>> 
>>> 
>>> I put the error message about “darwin 16” into google and was given the following:
>>> 
>>> The error is explaining very well what is happening and the recommendation is to visit the Migration website for further instructions.
>>> My recommendation (and tested of course) is to just download the latest macports, the Sierra version and install it.
>>> 
>>> 
>>> 
>>> I am happy to try this but I would prefer suggestions to come from  Macports folk. If anyone can help I’d be very grateful. I presume that I would use ‘sudo port selfupdate’.
>> 
>> Step 2 of the guide says
>> 
>>   Reinstall MacPorts base
>> 
>>   After updating the development tools, install the base MacPorts system for your new platform, either from the appropriate installer or from source.
>> 
>> 
>> This step is before the one where you are asked to run
>> 
>> port -qv installed > myports.txt
>> 
>> So yes, you should do this.
>> 
>> No, do not do 'selfupdate' but as the above says, either use the installer or build from source.
>> 
>> Chris
>> 
>> 
>>> 
>>> Barrie.
>>> 
> 
> Thanks for the speedy reply, Chris. It’s a pity I couldn’t use ‘selfupdate’ because it appeared to be just what I wanted. Still, I used the pkg installer for Sierra and it was reasonably painless. Now I’m on to reinstalling all my packages. Thanks again. No reply needed.

Glad i could help.

Selfuodate  is for updating macports when a new release is available. This is not the same thing as rebuilding the same release for a different OS version. So no, selfupdate is not what you want here.

Chris
> 
> Barrie.