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Glasgow Haskell Compiler
GHC
Issues
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Implement minimumOn, maximumOn to mirror sortOn
#15566
· opened
Aug 25, 2018
by
Gabriel Garcia
Research needed
5
P
normal
Trac import
core libraries
feature request
6
updated
Jul 07, 2019
When a type application cannot be applied to an identifier due to the absence of an explicit type signature, let the error just say so!
#15596
· opened
Sep 03, 2018
by
kindaro
9.0.1
5
P
normal
Trac import
TypeApplications
error messages
feature request
typechecker
3
updated
Jan 23, 2020
GHCi command, tracing steps of instance resolution for Constraint or expression
#15613
· opened
Sep 06, 2018
by
Icelandjack
0
GHCi
P
low
Trac import
feature request
1
12
updated
Oct 01, 2019
Add "difficulty" field to tickets
#15640
· opened
Sep 13, 2018
by
Philippe
5
P
normal
Trac import
feature request
infrastructure
3
updated
Jul 07, 2019
Improve the worst case performance of weak pointers
#15642
· opened
Sep 14, 2018
by
David Feuer
9.0.1
5
P
normal
RTS
Trac import
feature request
runtime perf
12
updated
Jan 23, 2020
Add (or document if already exist) ability to derive custom typeclasses via source plugins
#15650
· opened
Sep 17, 2018
by
Dmitrii Kovanikov
8.6.1
5
P
normal
Trac import
deriving
feature request
plugins
1
10
updated
Jul 19, 2019
Support promotion of pattern synonyms to kinds
#15657
· opened
Sep 19, 2018
by
infinity0
8.6.1
5
P
normal
Trac import
feature request
1
updated
Jul 07, 2019
Break up the stable pointer table
#15665
· opened
Sep 22, 2018
by
David Feuer
8.6.1
5
P
normal
Trac import
feature request
12
updated
Jul 07, 2019
GADT's displayed type is misleading
#15674
· opened
Sep 25, 2018
by
AntC
8.6.1
5
P
normal
Trac import
error messages
feature request
8
updated
Jul 07, 2019
Type synonym unused binds no warning?
#15687
· opened
Sep 29, 2018
by
AntC
8.6.1
5
P
normal
Trac import
feature request
parser
4
updated
Jul 07, 2019
Add Eq1/Ord1/Read1/Show1 instances to newtypes in Data.Semigroup
#15690
· opened
Sep 29, 2018
by
Bodigrim
9.0.1
5
P
normal
Trac import
core libraries
feature request
1
updated
Jan 23, 2020
More liberally kinded coercions for newtypes
#15707
· opened
Oct 05, 2018
by
mniip
8.6.1
5
P
normal
Trac import
feature request
roles
typechecker
5
updated
Jul 07, 2019
Primitive atomic logical operations
#15719
· opened
Oct 08, 2018
by
David Feuer
5
P
normal
Trac import
feature request
2
updated
Jan 23, 2020
Don't include Haskeline (and others) in the global package DB
#15726
· opened
Oct 09, 2018
by
judah
5
P
normal
Trac import
feature request
5
updated
Jul 07, 2019
Add sortOn/coerce rule
#15731
· opened
Oct 09, 2018
by
David Feuer
5
P
normal
Trac import
core libraries
feature request
runtime perf
3
updated
Jan 23, 2020
Implement sconcat Semigroup Instances for Tuples
#15737
· opened
Oct 10, 2018
by
Andrew Martin
5
P
normal
Trac import
feature request
1
updated
Jul 07, 2019
Accept GHCRTS=-N1 when not compiled with -threaded
#15741
· opened
Oct 11, 2018
by
lspitzner
5
P
normal
RTS
Trac import
feature request
1
updated
Jul 07, 2019
Panicking typechecker plugins
#15745
· opened
Oct 13, 2018
by
Phil de Joux
5
P
normal
Trac import
compiler crash
feature request
plugins
typechecker plugins
1
2
updated
Jul 07, 2019
ghci command: report function's inferred visible type applications
#15762
· opened
Oct 17, 2018
by
Icelandjack
5
GHCi
P
normal
Trac import
feature request
3
updated
Jul 07, 2019
Visible type/kind applications in declaration of data/type constructors
#15782
· opened
Oct 19, 2018
by
Icelandjack
5
P
normal
Trac import
TypeApplications
feature request
5
updated
Dec 07, 2020
Improve/complete the GHCi :doc command
#15785
· opened
Oct 20, 2018
by
Simon Jakobi
5
GHCi
P
normal
Trac import
feature request
6
updated
Sep 26, 2019
Hi Haddock: Enable haddock to generate docs from .hi-files
#15786
· opened
Oct 20, 2018
by
Simon Jakobi
5
P
normal
Trac import
documentation
feature request
haddock
2
updated
Jan 23, 2020
Orphan Instance Overlap Error Message
#15814
· opened
Oct 27, 2018
by
parsonsmatt
5
P
normal
Trac import
feature request
newcomer
5
updated
Jul 07, 2019
Exponentiation needs PrelRules
#15842
· opened
Nov 01, 2018
by
David Feuer
5
P
normal
Trac import
feature request
newcomer
runtime perf
8
updated
Jan 23, 2020
coercion errors don't always mention that data constructors are not in scope
#15850
· opened
Nov 02, 2018
by
gelisam
5
P
normal
Trac import
error messages
feature request
0
updated
Jul 07, 2019
Error message: "accepting non-standard pattern guards" when there are no actual patterns
#15851
· opened
Nov 02, 2018
by
cdsmith@twu.net
5
P
normal
Trac import
feature request
0
updated
Jul 07, 2019
Warn about incomplete NamedFieldPuns patterns
#15855
· opened
Nov 03, 2018
by
Artyom.Kazak
5
P
normal
Trac import
feature request
3
updated
Jul 07, 2019
Standard deriving should be less conservative when `UndecidableInstances` is enabled
#15868
· opened
Nov 07, 2018
by
edsko@edsko.net
5
P
normal
Trac import
deriving
feature request
6
updated
Jul 22, 2019
Function versioning instead of compilation flags...
#15876
· opened
Nov 08, 2018
by
MichalGajda
8.6.3
5
P
normal
SIMD
Trac import
feature request
linking
2
updated
Jul 07, 2019
:load in ghci should expose the entire namespace of a module
#15882
· opened
Nov 09, 2018
by
EyalLotem
8.6.3
5
GHCi
P
normal
Trac import
feature request
3
updated
Jul 07, 2019
Provide a way for hadrian users to always pass some options to hadrian itself
#15890
· opened
Nov 13, 2018
by
Alp Mestanogullari
5
P
normal
Trac import
feature request
hadrian
11
updated
Jan 23, 2020
If a type signature is too long to read left-to-right then let it read top-to-bottom.
#15959
· opened
Nov 27, 2018
by
Phil de Joux
8.6.3
5
P
normal
Trac import
feature request
4
updated
Jun 20, 2020
readv and pread support
#15965
· opened
Nov 28, 2018
by
Ben Gamari
5
P
normal
Trac import
core libraries
feature request
1
updated
Jan 23, 2020
Built-in support for half-floats
#15983
· opened
Dec 01, 2018
by
Levent Erkök
8.6.3
5
P
normal
Trac import
feature request
4
updated
Jul 07, 2019
Bitwise-oriented semigroup and monoid newtype wrappers for Data.Bits.Bits instances
#15993
· opened
Dec 04, 2018
by
koz_
9.2.1
5
P
normal
Trac import
core libraries
feature request
1
35
updated
Jan 16, 2021
Add Unlifted List type to base
#15996
· opened
Dec 05, 2018
by
chessai
8.6.3
5
P
normal
Trac import
core libraries
feature request
3
updated
Jul 07, 2019
EventManager could benefit from Data.Primitive.UnliftedArray
#15997
· opened
Dec 05, 2018
by
chessai
8.6.3
5
P
normal
Trac import
core libraries
feature request
1
updated
Jul 07, 2019
GHC.Event.Thread.eventManager has a lot of indirections
#15998
· opened
Dec 05, 2018
by
chessai
8.6.3
5
P
normal
Trac import
core libraries
feature request
2
updated
Jul 07, 2019
Implement `-Os`
#16007
· opened
Dec 07, 2018
by
Sebastian Graf
⊥
5
P
normal
Trac import
feature request
task
6
updated
Jul 07, 2019
Deprecate `optional` from Text.ParserCombinators.ReadP
#16009
· opened
Dec 07, 2018
by
dbaynard
5
P
normal
Trac import
core libraries
feature request
4
updated
Jan 23, 2020
Cannot use DefaultSignatures for TypeFamiles
#16027
· opened
Dec 10, 2018
by
John Ericson
8.6.3
5
P
normal
Trac import
feature request
3
updated
Jul 07, 2019
expDouble## 0.0## doesn't get complied into 1.0##
#16036
· opened
Dec 12, 2018
by
Mateusz Kowalczyk
5
P
normal
Trac import
feature request
4
updated
Jul 07, 2019
Add a warning flag that warns when a datatype could be a newtype
#16049
· opened
Dec 14, 2018
by
chessai
5
P
normal
Trac import
feature request
2
updated
Jan 23, 2020
Instance resolution error message unclear, because of missing kind information
#16050
· opened
Dec 14, 2018
by
chessai
5
P
normal
Trac import
feature request
7
updated
Jul 07, 2019
expose st_blksize field from fstat syscall
#16099
· opened
Dec 27, 2018
by
Philippe
3
P
low
Trac import
external-unix
feature request
0
updated
Jul 07, 2019
GHC --version doesn't show arch
#16108
· opened
Dec 30, 2018
by
Philippe
3
P
low
Trac import
feature request
1
updated
Jul 07, 2019
Hide the gnarly levity polymorphism stuff in the signatures of `undefined`, `throw`, etc
#16119
· opened
Jan 02, 2019
by
jberryman
5
P
normal
Trac import
core libraries
feature request
2
updated
Jul 07, 2019
Pattern match checker should shortcut on simple cases
#16128
· opened
Jan 04, 2019
by
gershomb
5
P
normal
Trac import
feature request
1
updated
Jul 07, 2019
GHC for NetBSD
#16149
· opened
Jan 08, 2019
by
gh1
5
P
normal
Trac import
feature request
1
updated
Jul 07, 2019
Pattern Synonym for Ratio
#16155
· opened
Jan 09, 2019
by
Zemyla
5
P
normal
PatternSynonyms
Trac import
core libraries
feature request
1
updated
Jul 07, 2019
Don’t throw an error (by default) for use of DEPRECATED symbols under -Werror
#16163
· opened
Jan 09, 2019
by
Matt Renaud
5
P
normal
Trac import
feature request
6
updated
Jul 07, 2019
Move `Data.Profunctor` from `profunctors` package to `base`
#16173
· opened
Jan 13, 2019
by
Dmitrii Kovanikov
5
P
normal
QuantifiedConstraints
Trac import
core libraries
feature request
5
17
updated
Jul 09, 2020
Let-insertion for template haskell
#16176
· opened
Jan 14, 2019
by
Matthew Pickering
5
P
normal
TemplateHaskell
Trac import
feature request
typed TemplateHaskell
5
updated
Jul 07, 2019
Brackets and splices should be overloaded like the static keyword
#16178
· opened
Jan 14, 2019
by
Matthew Pickering
5
P
normal
TemplateHaskell
Trac import
feature request
typed TemplateHaskell
3
updated
Jul 07, 2019
ParsedSource (especially module name source span) not available from Source Plugin
#16189
· opened
Jan 16, 2019
by
literon
3
GHC API
P
low
Trac import
feature request
1
updated
Jan 23, 2020
readHexRational missing from Numeric
#16216
· opened
Jan 22, 2019
by
Merijn Verstraaten
5
P
normal
Trac import
core libraries
feature request
1
7
updated
Jul 10, 2020
-Wmissing-signatures should warn when top-level signature is partial
#16220
· opened
Jan 23, 2019
by
Arnaud Spiwack
5
P
normal
Trac import
feature request
5
updated
Nov 21, 2019
Add setField to HasField
#16232
· opened
Jan 24, 2019
by
Adam Gundry
5
OverloadedRecordFields
P
normal
Trac import
feature request
ghc proposal
records
typechecker
5
updated
Nov 06, 2020
Run check-api-annotations and check-ppr on all parseable test code
#16237
· opened
Jan 25, 2019
by
Alan Zimmerman
5
P
normal
Trac import
feature request
testsuite
0
updated
Jul 07, 2019
Core visible conditional compilation/static definition/code selection based upon static key values
#16240
· opened
Jan 25, 2019
by
Carter Schonwald
5
P
normal
Trac import
feature request
9
updated
Jul 07, 2019
Allow definition of functions with absurd contexts
#16266
· opened
Feb 01, 2019
by
So8res
3
P
low
Trac import
feature request
3
updated
Nov 06, 2019
Feature request: Polymorphic kinds in Data.Functor.Classes
#16276
· opened
Feb 01, 2019
by
Langston Barrett
5
P
normal
PolyKinds
Trac import
feature request
0
updated
Jul 07, 2019
Additions to Control.Exception: withException, displaySomeExceptionType
#16301
· opened
Feb 10, 2019
by
dsf
5
P
normal
Trac import
core libraries
feature request
3
updated
Oct 21, 2020
Improve confusing error message with MINIMAL pragma
#16314
· opened
Feb 13, 2019
by
Levent Erkök
5
P
normal
Trac import
feature request
9
updated
Jul 07, 2019
`-package-env=` in OPTIONS_GHC not supported
#16316
· opened
Feb 14, 2019
by
Herbert Valerio Riedel
7
P
high
Trac import
feature request
0
updated
Jul 07, 2019
Feature request: Data.Foldable.asumMap
#16332
· opened
Feb 17, 2019
by
Joseph C. Sible
5
P
normal
Trac import
core libraries
feature request
2
updated
Dec 25, 2019
Extend constant folding operations to bit manipulations
#16351
· opened
Feb 22, 2019
by
Mateusz Kowalczyk
5
P
normal
Trac import
feature request
3
updated
Jul 07, 2019
Modular constant folding
#16363
· opened
Feb 25, 2019
by
Sylvain Henry
5
P
normal
Trac import
feature request
2
updated
Jul 07, 2019
Strict version of `foldlM`.
#16366
· opened
Feb 26, 2019
by
autotaker
5
P
normal
Trac import
core libraries
feature request
1
updated
Jun 26, 2020
HPC's CLI is awkward
#16380
· opened
Mar 02, 2019
by
MaxGabriel
5
HPC
P
normal
Trac import
feature request
1
updated
Jul 07, 2019
Add isBinDigit to Data.Char
#16403
· opened
Mar 07, 2019
by
hesiod
5
P
normal
Trac import
core libraries
feature request
1
updated
Jun 26, 2020
hpc should render information about the run in its html markup
#2075
· opened
Feb 04, 2008
by
dons
5
HPC
P
normal
Trac import
feature request
0
updated
Jul 07, 2019
Pseudo terminal and process-1.2.0.0
#8844
· opened
Mar 04, 2014
by
ksamborski
5
P
normal
Trac import
external-process
feature request
0
updated
Jul 07, 2019
Implement dependency tracking output proposal
#16446
· opened
Mar 15, 2019
by
Ben Gamari
GHC API
feature request
well-typed priorities
3
updated
Apr 27, 2019
Way to get all "unbound ids" in a Core expression
#16462
· opened
Mar 19, 2019
by
Michael Peyton Jones
GHC API
feature request
2
updated
Mar 21, 2019
Take the idea of build roots a bit more seriously
#16481
· opened
Mar 23, 2019
by
Matthew Pickering
feature request
hadrian
infrastructure
10
updated
Jan 05, 2020
feature request: warn if OverloadedStrings provides valid semantics
#16496
· opened
Mar 25, 2019
by
Ayman Nadeem
OverloadedStrings
error messages
feature request
4
3
updated
Sep 03, 2019
Enable plugins to access comments
#16506
· opened
Mar 28, 2019
by
lazac
feature request
plugins
4
updated
Aug 17, 2019
Make ghc-heap multi-platform
#16564
· opened
Apr 10, 2019
by
John Ericson
feature request
ghc-heap
3
3
updated
Oct 03, 2019
Flag for core-to-core pass that adds safe FFI bytearray pinnedness check
#16589
· opened
Apr 18, 2019
by
Andrew Martin
feature request
4
updated
Jul 01, 2019
TVar with unpacked machine integer
#16599
· opened
Apr 22, 2019
by
Andrew Martin
⊥
1
P
low
STM
feature request
ghc proposal
12
updated
May 06, 2020
Precision of `threadDelay` with -threaded could be increased on Linux
#16601
· opened
Apr 24, 2019
by
takano-akio
I/O manager
feature request
3
updated
Jun 26, 2020
Dumping GHC Core when mixin instantiates indefinite module
#16612
· opened
Apr 30, 2019
by
Andrew Martin
⊥
1
P
low
feature request
question
1
updated
Jul 07, 2019
Add unfoldings for local bindings outside the simplifier
#16615
· opened
Apr 30, 2019
by
Michael Peyton Jones
feature request
plugins
simplifier
48
updated
Aug 16, 2019
Relax requirements on hidden modules in GHCi
#16622
· opened
May 02, 2019
by
parsonsmatt
GHCi
feature request
0
updated
May 07, 2019
TypeRep fingerprints for arrow types are problematic
#16626
· opened
May 03, 2019
by
David Feuer
Typeable
feature request
3
updated
May 22, 2019
GHCI: Multiline mode
#16634
· opened
May 07, 2019
by
3noch
GHCi
feature request
8
updated
May 15, 2019
Eq1, Show1 etc. instances for Data.Semigroup.{First,Last}
#16636
· opened
May 07, 2019
by
Simon Jakobi
core libraries
feature request
6
updated
Jun 02, 2020
Make Hadrian CWD-aware
#16667
· opened
May 17, 2019
by
Alp Mestanogullari
Make removal
feature request
hadrian
testsuite
5
updated
Jan 05, 2020
Communicate to user why a module is being compiled to object code when being loaded into GHCi
#16671
· opened
May 18, 2019
by
Michael Sloan
GHCi
feature request
2
updated
May 18, 2019
Making hadrian/ghci.sh work executing :main
#16672
· opened
May 18, 2019
by
Matthew Pickering
feature request
infrastructure
4
updated
Jan 15, 2020
Can't use multiple names in a standalone kind signature
#16754
· opened
Jun 05, 2019
by
Ryan Scott
StandaloneKindSignatures
feature request
8
updated
Jan 07, 2020
RISC-V support
#16783
· opened
Jun 08, 2019
by
Ben Gamari
feature request
3
16
updated
Nov 07, 2020
Make heap profiling less guesswork by giving more control to Haskell program
#16788
· opened
Jun 09, 2019
by
Daniel Gröber (dxld)
feature request
profiling
1
3
updated
Jul 18, 2019
Consider turning on -xt by default when profiling
#16795
· opened
Jun 10, 2019
by
Matthew Pickering
feature request
profiling
1
6
updated
Dec 21, 2020
Always inline code which would result in static indirections.
#16831
· opened
Jun 16, 2019
by
Andreas Klebinger
code generation
feature request
pointer tagging
runtime perf
16
updated
Jan 20, 2020
Enforcing laziness or strictness annotations on data fields
#16836
· opened
Jun 16, 2019
by
Simon Jakobi
feature request
6
updated
Jun 21, 2019
LLVM tools should be bundled on Windows
#16851
· opened
Jun 21, 2019
by
Sophie Taylor
⊥
2
P
low
Windows
feature request
1
6
updated
Jul 07, 2019
mini-ghc
#16852
· opened
Jun 22, 2019
by
Michael L.
3
P
low
feature request
3
updated
Jul 30, 2019
Implement escape analysis for stack allocation.
#16891
· opened
Jul 01, 2019
by
Andreas Klebinger
⊥
1
P
low
code generation
feature request
runtime perf
1
10
updated
Oct 27, 2020
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