On Thu, 23 May 2013, Jasmin Christian Blanchette wrote:

Am 23.05.2013 um 14:30 schrieb Jasmin Christian Blanchette 
<[email protected]>:

With the latest repository version (510709f8881d), I can't manage to build 
anything; e.g.
[…]
I can't remember having done anything strange with my system except pulling 
some changes from the main repository.

OK, ./bin/isabelle jedit -bf did the trick. I somehow didn't suspect this was the issue since nothing has changed in the last couple of days with the components, but it seems like there's nothing like a fresh Isabelle/Scala build.

This is indeed the way to force a fresh build, via that indirection to build Isabelle/jEdit. See also the recent addition here http://isabelle.in.tum.de/repos/isabelle/file/510709f8881d/README_REPOSITORY#l37

I've managed to reduce the chances of bad Isabelle/Scala self-compilation a little bit recently, but it is not 100% bullet-proof. In particular it is not thread-safe. (This is not relevant for official releases, only for building repository snapshots.)


        Makarius
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