Yes, you are right, indeed there are three groups in the baseline so you can install only JupyterTalk package doing
Metacello new
baseline: 'JupyterTalk';
repository: 'github://jmari/JupyterTalk:master/repository';
load:'default'
This is the right way.
----------------------------
group: 'default' with: #('JupyterTalk');
group: 'roassalSupport' with: #('JupyterTalk-Roassal');
group: 'all' with: #('JupyterTalk-Roassal').
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Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html
