This repository is a mirror of Haskell's "pesca: Proof Editor for Sequent Calculus".
The code has been fixed to work with recent versions of GHC.
(Companion to the book Structural Proof Theory by Sara Negri and Jan von Plato, to appear at Cambridge University Press)
(c) Aarne Ranta 24/3/2000.
To run under Unix, type
./pesca
To the PESCA prompt |-, type
?
to see the available commands, or
m
to see the manual (the latter assumes latex and xdvi are on your path).
The pesca shell script assumes the Haskell interpreter hugs is on your path. You can also compile the Haskell source code by hbc or ghc; the Main module is in the file Editor.hs.