Stephan Thanks for the comment. I understand the point about development and things not always being in step. But if you look at it from my point of view, I am an elderly retired statistician who does programming for fun, I am not an expert in development and I am pretty new to Pharo. It all looks a maze of new terminology to me - I don't understand the difference between Monticello and Metacello, for instance. I am sure to an expert your explanation of how to check the correct version of Magritte3 is quite straightforward, but I would never have found my way to that conclusion myself. As I pointed out to Esteban, I used the configuration browser on 5 May to get the stable version of Magritte3. If that was already out of date, I am pretty well lost.
Still, I am making progress with my original aim of learning about Magritte, and there are many helpful people on this group, so you can just regard this as me blowing off steam after things had not gone completely easily. Peter Kenny -----Original Message----- From: Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] On Behalf Of Stephan Eggermont Sent: 14 May 2014 12:58 To: pharo-users@lists.pharo.org Subject: Re: [Pharo-users] Problem learning about Magritte Peter wrote: >Thanks. I have Magritte-Morph in my image, but I wonder if anyone has >debugged it. I send asMagritteMorph to a Magritte description and I get a >MAContainerMorph, which is OK. Try sending openInWorld to this, and it falls >over in MADescriptionMorph>>buildMorph, which calls >MADescriptionMorph>>rectangleMorph, which tries to create an instance of the >non-existent class RectangleMorph. Hmm, that looks like you have an old version of Magritte-Morph loaded. If you open the Monticello browser, you can select the Magritte-Morph package and then open its repository to see if there is a newer version. If you select a newer version and click Changes, you can see if this newer version is likely to solve your problem (it is). If you take a look at the ConfigurationOfMagritte3, you can see what goes wrong. version32 is the first one referring to a Magritte-Morph newer than version 70. stable: installs version311 however. So ConfigurationOfMagritte3 needs a new stable version. (Done) >I have tried to trace this back, and it is true that my original Pharo 3.0 >image, downloaded on 30 Apr 2014, does not have the class RectangleMorph. I >have looked at older images, and the class exists. Maybe my mistake was to >try to use the Pharo 3.0 image the day it was announced. Perhaps I would be >better off using one of the pre-packed images you mention. Pharo 3 has lots of improvements and clean-ups. RectangleMorph behavior was folded back into BorderedMorph. The projects running on top of Pharo have different ideas of what should be stable and what development versions. The people developing them mostly use development releases or specific versions. If there are not a lot of non-developing users the stable version tends to lag behind. And if the specific problem is not in the tests, CI will not break. Just before the release, there are lots of fixes and the image changes fast. Not all projects will be able to synchronize fast, and have sufficient trust to declare a new version stable. So just after a release, you might have to use a lot of development versions, check repositories and ask questions on the mailing lists. Please do, that is the only way we can improve. >My only worry is that there is a list of dozens of contributions on >https://ci.inria.fr/pharo-contribution/, and unless you have far more >knowledge than I have it is impossible to know which might be helpful. For >now I will follow your hint and use the Forum image. That's a helpful comment. Thank you. We should improve the project descriptions (at least I should for mine). Stephan
