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  • Glasgow Haskell Compiler
  • GHCGHC
  • Issues

  • Open 7
  • Closed 14
  • All 21
New issue
  • Priority Created date Last updated Milestone due date Due date Popularity Label priority Manual Weight Blocking
  • 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