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License: MIT License
Setting up Synquid environment is painful and time consuming.
So, I made a docker image for those who have troubling compile Synquid from source code. Feel free to use it.
https://hub.docker.com/repository/docker/yinengy/synquid
Usage:
docker run --name synquid -it yinengy/synquid
synquid <your_program_filename>
Changing a line in the "list replicate" example on the ComCom website from:
replicate :: n: Nat -> x: a -> {List a | len _v == n}
to:
replicate :: x: a -> {List a | len _v == 4}
we see the following error:
/var/www/comcom/tmp/Synquid/0719913783814785/Synquid.sq:29: Error:
Cannot match shape 'Bool'
with shape '_'
when checking neq :: X1:_ -> X0:_ -> _
in
\x .
match neq ?? ?? with
If you instead use:
replicate :: x: a -> {List a | len _v == 3}
the following result is produced:
replicate = \x . Cons x (Cons x (Cons x Nil))
From my trivial investigation it appears that the simplifyContraint'
function does not contain a case for one of the types being an LetT _ _ AnyT
which I presume would constitute an empty constraint. This is me just guessing because it looks like simplifyContraint'
already handles the AnyT
case and that is the only RType whose pretty-printed shape could match "_" while also not being AnyT
.
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