Hi Francois!
Here is logger for pharo. It works in pharo 1.2, 1.3, 1.4 and 2.0.
http://concretetypeinference.blogspot.fr/2012/06/metacello-paullepoulpe-project-version.html
� Gofer new
���������� url: 'http://ss3.gemstone.com/ss/PaulLePoulpe';
���������� package: 'ConfigurationOfPaulLePoulpe';
���������� load.
�� ( ConfigurationOfPaulLePoulpe project version:'1.0') load
There are some examples in the package, in any case, you can get some documentation in here:
http://concretetypeinference.blogspot.fr/2012/06/pharo-logger-aka-paul-octopus-or-le.html
But with the examples, it should be straight forward..
Santiago.