Re: [isabelle-dev] Isabelle (proof assistant) - Wikipedia, the free encyclopedia

2013-02-22 Thread Joachim Breitner
Hi,

Am Freitag, den 22.02.2013, 08:49 +0100 schrieb Gergely Buday:
 Wiki is old-fashioned these days, how about using Stack Exchange for
 Isabelle user communication? 
 What do you think about this?

I guess this is getting off-topic for isabelle-dev and should rather be
discussed on the users list. Anyways: I find SE a good format for the
typical questions that are raised on the users list, but I am not sure
if the community is large enough to provide reasonable fast and good
answers there to make it useful. But it could be worth a try.

Greetings,
Joachim

-- 
Dipl.-Math. Dipl.-Inform. Joachim Breitner
Wissenschaftlicher Mitarbeiter
http://pp.ipd.kit.edu/~breitner


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[isabelle-dev] Build error: isabelle.XML$XML_Body

2013-02-22 Thread Tjark Weber
Hi,

After hg fetch to update to tip (22ba938ab10f), followed by isabelle
components -a, Isabelle build now fails with this error message:

  isabelle.XML$XML_Body

Any advice?

Tjark

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Re: [isabelle-dev] Build error: isabelle.XML$XML_Body

2013-02-22 Thread Makarius

On Fri, 22 Feb 2013, Tjark Weber wrote:


After hg fetch to update to tip (22ba938ab10f), followed by isabelle
components -a, Isabelle build now fails with this error message:

 isabelle.XML$XML_Body

Any advice?


I would say you just need the usual isabelle build -b -f to force a 
fresh build of everything.  Java stuff, and especially Scala stuff is not 
100% monotone wrt. upgrades.



Makarius
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Re: [isabelle-dev] Isabelle (proof assistant) - Wikipedia, the free encyclopedia

2013-02-22 Thread Makarius

On Fri, 22 Feb 2013, Joachim Breitner wrote:


Am Freitag, den 22.02.2013, 08:49 +0100 schrieb Gergely Buday:

Wiki is old-fashioned these days, how about using Stack Exchange for
Isabelle user communication?


I've asked myself this very question occasionally.  Just empirically by 
doing regular web search, I end up very often on Stack Exchange, e.g. for 
Java or JVM problems.  The reason why Java with all its problems still 
survives (and thrives) is that so many answers are available.




I guess this is getting off-topic for isabelle-dev and should rather be
discussed on the users list. Anyways: I find SE a good format for the
typical questions that are raised on the users list, but I am not sure
if the community is large enough to provide reasonable fast and good
answers there to make it useful. But it could be worth a try.


You are welcome to initiate a thread on isabelle-users.

I think the main question for most of us is how SE actually works, and 
what needs to be done to establish some foothold there.



Makarius
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Re: [isabelle-dev] Build error: isabelle.XML$XML_Body

2013-02-22 Thread Tjark Weber
On Fri, 2013-02-22 at 13:26 +0100, Makarius wrote:
 I would say you just need the usual isabelle build -b -f to force a 
 fresh build of everything.  Java stuff, and especially Scala stuff is not 
 100% monotone wrt. upgrades.

Thanks for the quick reply. jedit -b -f by itself didn't seem to fix
the issue, but after manually deleting files in ~/.isabelle/ I am no
longer stuck. (I did run into the problem that Christian Sternagel
noticed recently, where afp_build failed to update session index, but
managed to solve that myself.)

Tjark

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Re: [isabelle-dev] Build error: isabelle.XML$XML_Body

2013-02-22 Thread Makarius

On Fri, 22 Feb 2013, Tjark Weber wrote:


On Fri, 2013-02-22 at 13:26 +0100, Makarius wrote:

I would say you just need the usual isabelle build -b -f to force a
fresh build of everything.  Java stuff, and especially Scala stuff is not
100% monotone wrt. upgrades.


Thanks for the quick reply. jedit -b -f by itself didn't seem to fix
the issue, but after manually deleting files in ~/.isabelle/


Now I understand the situation.  You still had some old log files with 
formal content, whose format I've changed again in the meantime. There was 
already some protection against such bad log files, but I did not handle 
all possible exceptions (due to the general confusion about exceptions on 
the JVM).


This should be more robust in Isabelle/d8ca566b22b3.


Makarius

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