Hi,
We essentially finished moving Moose to Pharo 3.0 (we still have 6 yellow
tests but they needed attention anyway). It took about 4 people looking
into issues for a total probably around 2 man-days of effort. The largest
impediment was actually SmalltalkHub being down for one day :).
What posed problems:
- RB visitor now has correct visit* methods instead of accept* methods. The
deprecation messages helped quite a bit. This meant (1) that we had to
rename in our visitors the methods, and (2) that we had to change the old
accept* messages.
- RB nodes do not answer to #isLiteral anymore. Instead, they answer
correctly to #isLiteralNode so that to avoid confusion with
Object>>#isLiteral. This is good, and this meant that we had to hunt all
#isLiteral usages in Moose.
- Categories are no longer mapped on RPackages through 1-to-1. This is also
good because it is an important step in Pharo. Although originally we said
we want to keep 1-to-1, this is probably a better solution now. For Moose,
this meant that some of our older tests setup had to be modified a bit to
rely on RPackage only.
- Some Morphs rely now on Announcements, and this had a little impact on
the assumptions we make when we suspend announcements (to avoid infinite
loops) that are being sent between Morphic and Glamour. We fixed this in
Glamour.
- In FileSystem #ensureDirectory was renamed to #ensureCreateDirectory
without a deprecation. For this one, we should add a deprecation for the
old method.
- flatCollect had a conflicting behavior in Pharo. We are now integrating
the Moose version so that it returns the same species.
- The new SpecDebugger expects the registered Inspector to be based on
Spec, and this causes problems with the GTInspector. This problem still has
to be fixed in Pharo.
All in all, we encountered no significant problems and the problems we
faced came from deep into Pharo. So, if your code is not relying directly
on RB, RPackage or the Debugger, you are likely to have a smooth transition.
Cheers,
Doru
--
www.tudorgirba.com
"Every thing has its own flow"