Don't look for offsets from constants #49
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This introduces an infinite loop with the solver pipeline. i.e. when we have: [G] x :: KnownNat 10 [W] KnownNat 4 we would produce solved: x - y :: KnownNat 4 New wanted: y :: KnownNat 6 Then we would go to: [G] x :: KnownNat 10 [W] KnownNat 6 and solve as: solved: x - y :: KnownNat 6 new wanted: y :: KnownNat 4 And cycle.... Found when upgrading https://github.com/bittide/bittide-hardware/ to GHC 9.4. But it's hard to create a small reproducer, so there is no regression test.
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This introduces an infinite loop with the solver pipeline. i.e. when we have:
[G] x :: KnownNat 10
[W] KnownNat 4
we would produce
solved: x - y :: KnownNat 4
New wanted: y :: KnownNat 6
Then we would go to:
[G] x :: KnownNat 10
[W] KnownNat 6
and solve as:
solved: x - y :: KnownNat 6
new wanted: y :: KnownNat 4
And cycle....
Found when upgrading https://github.com/bittide/bittide-hardware/ to GHC 9.4. But it's hard to create a small reproducer, so there is no regression test.