Issues · Glasgow Haskell Compiler / GHC · GitLab

Don't allow deriving-via when the via type is identical to the type intsances are being derived for

#19465 · opened Mar 01, 2021 by Ollie Charles DerivingVia Tfeature request
- 2
- 2
updated Mar 01, 2021
DerivingVia: incorrectly accepts deriving via types with differing runtime representations

#19079 · opened Dec 16, 2020 by Zachary Churchill DerivingVia Pnormal Tbug deriving documentation newcomer
- 4
updated Dec 20, 2020
DerivingVia: check via type with empty class list, allow omitting empty class list

#18258 · opened May 29, 2020 by Icelandjack DerivingVia
- 1
updated May 29, 2020
Relax inferred context simplification to allow "exotic" contexts for GeneralizedNewtypeDeriving and DerivingVia instances.

#18219 · opened May 22, 2020 by Andrew Pritchard DerivingVia Tfeature request deriving
- 0
updated May 24, 2020
ghc 8.8.3 uses 25-30% more time and memory to derive instances with -XDerivingVia

#18077 · opened Apr 20, 2020 by chris.parks DerivingVia Pnormal Tbug compiler perf
- 5
updated Apr 26, 2020
Parameterizing Stock instance deriving

#17210 · opened Sep 18, 2019 by Sylvain Henry DerivingVia Tfeature request
- 1
updated Sep 18, 2019
-XDerivingVia (and deriving strategies) is under specified in the manual

#17183 · opened Sep 12, 2019 by Richard Eisenberg DerivingVia Tbug deriving documentation
- 0
updated Sep 12, 2019