Changelog for typelevel-rewrite-rules-1.0.0.1
1.0.0.1
- Now supports ghc-9.0 (and remains compatible with ghc-8.10)
1.0
- Now supports ghc-8.10! Unfortunately, ghc-8.6 and ghc-8.8 are no longer
supported.
- Now using ghc's builtin iteration limit instead of a hardcoded internal
limit. Since ghc's limit is much smaller than our internal limit was, you may
need to add something like
{-# OPTIONS_GHC -fconstraint-solver-iterations=100 #-}
if ghc recommends you to do so.
- Now making use of givens. That is, you can now call a function expecting
(xs ~ rewritten-expr) given (xs ~ expr). Previously, you could only call a
function expecting (xs ~ expr) given (xs ~ rewritten-expr).
- Now supports instance constraints. That is, you can now call a function which
requires an
Eq (Vec rewritten-expr)
given an Eq (Vec expr)
. Previously,
we only supported equality constraints (expr ~ rewritten-expr
).
- Now works with type variables of kind Nat and Symbol.
- The generated code now passes ghc's core-lint check.
- Error messages involving rewritten constraints now include the relevant
rewrite rules.
- Bugfix: a spurious "the substitution forms a cycle" message was sometimes
emitted even when the substitution rules did not form a cycle (see #15).
- Bugfix: rewrite rules were sometimes not firing (see #21).
- Bugfix: error messages were sometimes missing the error location (see #17).
0.1