[isabelle-dev] NEWS: Remote provers from SystemOnTPTP via Isabelle/Scala

Makarius makarius at sketis.net
Sun Mar 14 22:44:03 CET 2021

On 14/03/2021 22:19, Makarius wrote:
> And here is the actual implementation in Isabelle/Scala (using HTTP POST
> requests):
> https://isabelle-dev.sketis.net/source/isabelle/browse/default/src/HOL/Tools/ATP/system_on_tptp.scala;e92f2e44e4d8

For completeness, this is the underlying HTTP module in Isabelle/Scala:


More than 10 years ago, I was promoting the use of perl as "universal system
glue". Now we can do it more concisely in Isabelle/Scala, without external
dependencies, and with fine points adjusted to Isabelle standards. The above
is < 10Kb for client and server, which is used for isabelle.preview in

It is still too early to ask the canonical question about "any remaining uses
of perl": there are still quite a lot in small scripts that are not
incorporated in Isabelle/Scala yet, e.g. "isabelle latex".


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