StitchLH is a reimplementation of Stitch using LiquidHaskell.
Stitch is a full implementation of the simply typed lambda-calculus. The main
stitch-lh executable is a REPL, allowing the user to write lambda-expressions and
evaluating them. Run :help at the prompt to see other commands.
Under the hood, StitchLH is implemented with a simple abstract syntax tree. LiquidHaskell is used to ensure that only well-typed Stitch terms can be built internally. This feat requires little use of modern GHC/Haskell features.
To build and test
nix-shell --pure --run "stack --nix test"
To run the interpreter
nix-shell --pure --run "stack --nix exec stitch-lh"