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Glasgow Haskell Compiler
GHC
Issues
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52
Closed
142
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194
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Title
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Blocking
`coerce`ing a function should be possible without type applications when we can newtype derive the method
#20821
· created
Dec 14, 2021
by
Sebastian Graf
Coercible
T
feature request
deriving
3
updated
Dec 14, 2021
Make coerce-derived dictionaries coercible
#20815
· created
Dec 13, 2021
by
Icelandjack
Coercions
P
low
T
feature request
deriving
4
updated
Dec 14, 2021
feature request: deriving for Data.Bifoldable Data.Bifunctor Data.Bitraversable
#20314
· created
Aug 31, 2021
by
Carter Schonwald
Research needed
P
normal
T
feature request
core libraries
deriving
2
updated
Sep 07, 2021
Inflexible DerivingVia
#20099
· created
Jul 11, 2021
by
Jaro Reinders
DerivingVia
P
low
T
feature request
deriving
proposal pending
3
updated
Sep 28, 2021
Odd GND failure/success
#19936
· created
Jun 03, 2021
by
David Feuer
DerivingVia
T
question
deriving
info needed
roles
6
updated
Jun 08, 2021
Should Generically (/ Generically1) derive newtype Generic (/ Generic1)?
#19906
· created
May 27, 2021
by
Icelandjack
DerivingVia
P
low
T
feature request
core libraries
deriving
info needed
3
updated
May 30, 2021
DeriveFunctor: Use `contramap' in contravariant position
#19713
· created
Apr 16, 2021
by
Icelandjack
T
feature request
deriving
3
updated
Apr 19, 2021
[Discussion] Integrating DataTypeable, Functor, Foldable, Traversable, Generic and Lift in the `stock` deriving strategy
#19707
· created
Apr 15, 2021
by
Hécate Moonlight
P
low
T
feature request
deriving
3
7
updated
Apr 16, 2021
Don't suggest turning on `DeriveAnyClass` when an instance cannot be derived
#19692
· created
Apr 13, 2021
by
syd@cs-syd.eu
P
normal
T
feature request
deriving
2
1
updated
Apr 15, 2021
(Derived) Ord instances generate terrible code
#19445
· created
Feb 26, 2021
by
Sebastian Graf
9.6.1
T
bug
compiler perf
deriving
pointer tagging
5
updated
Apr 06, 2022
Support overriding "No instance" errors using the default deriving strategy
#19418
· created
Feb 22, 2021
by
infinity0
T
feature request
deriving
0
updated
Mar 02, 2021
Deriving multiple classes in standalone (or document this limitation)
#18874
· created
Oct 22, 2020
by
Julien Debon
T
feature request
deriving
1
1
updated
Nov 08, 2020
Relax inferred context simplification to allow "exotic" contexts for GeneralizedNewtypeDeriving and DerivingVia instances.
#18219
· created
May 22, 2020
by
Andrew Pritchard
DerivingVia
T
feature request
deriving
0
updated
May 24, 2020
GND generates code that instantiates coerce too much
#18213
· created
May 21, 2020
by
Ryan Scott
QuantifiedConstraints
deriving
1
5
updated
Oct 31, 2020
ConstrainedClassMethods can trigger un-actionable redundant constraint warnings together with GND
#18148
· created
May 06, 2020
by
Koz Ross
P
normal
T
bug
deriving
error messages
roles
18
updated
May 22, 2020
DeriveGeneric gets a wrong infix constructor associativity when type is declared in a different module
#18101
· created
Apr 26, 2020
by
Xia Li-yao
P
normal
T
bug
deriving
generics
incorrect runtime result
0
updated
May 10, 2020
Can't derive TYPE rep instances
#17518
· created
Nov 26, 2019
by
Icelandjack
T
bug
deriving
documentation
3
updated
Jun 16, 2021
GeneralizedNewtypeDeriving should not require that constructor be in scope
#17328
· created
Oct 09, 2019
by
Richard Eisenberg
deriving
typechecker
9
updated
Jul 03, 2020
Replace useages of con2tag_* in the deriving code with data2tag#
#17241
· created
Sep 24, 2019
by
Andreas Klebinger
8.10.2
T
feature request
deriving
4
updated
Feb 09, 2021
-XDerivingVia (and deriving strategies) is under specified in the manual
#17183
· created
Sep 12, 2019
by
Richard Eisenberg
DerivingVia
T
bug
deriving
documentation
1
updated
Jul 05, 2021
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