{3} Feature requests by priority (610 matches)

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Ticket Summary Component Version Priority Severity Milestone Owner Status Created
#11425 The GHC API doesn't provide a good hscTarget option for tooling GHC API 7.10.3 high 8.2.1 new Jan 14, 2016
#11285 Split objects makes static linking really slow Compiler (Linking) 7.11 high new Dec 24, 2015
#3517 GHC has lots of extra hidden IOErrorType values Core Libraries low normal new Sep 15, 2009
#8161 Associated type parameters that are more specific than the instance header Compiler (Type checker) 7.7 low new Aug 23, 2013
#8441 Allow family instances in an hs-boot file Compiler 7.7 low ezyang new Oct 13, 2013
#8516 Add (->) representation and the Invariant class to GHC.Generics Compiler (Type checker) 7.7 low new Nov 9, 2013
#8619 Support anonymous string literals in C-- (OR) give better ASSERT failure messages in C-- Compiler 7.7 low new Dec 20, 2013
#8707 Kind inference fails in data instance definition Compiler (Type checker) 7.7 low new Jan 27, 2014
#8997 Warn about unused parameters in recursive definitions Compiler 7.8.2 low new Apr 15, 2014
#9118 Can't eta-reduce representational coercions Compiler (Type checker) 7.8.2 low new May 15, 2014
#9182 Empty case analysis for function clauses Compiler 7.8.2 low new Jun 7, 2014
#9392 "\n" is displayed weirdly in error messages Compiler 7.8.3 low new Aug 1, 2014
#9518 Improve error message for unacceptable role annotations Compiler (Type checker) 7.8.3 low infoneeded Aug 28, 2014
#9685 GHC fails to build with mingw32-make on Windows Build System 7.9 low new Oct 12, 2014
#9748 Disambiguate IO actions in GHCi with :set +t GHCi 7.8.2 low new Oct 31, 2014
#9864 Need realloc/resize feature for mallocForeignPtrBytes allocated memory Core Libraries 7.8.3 low new Dec 4, 2014
#9946 Expose the source location of template-haskell Names Compiler 7.11 low new Dec 31, 2014
#10055 Offer PolyKinded instances for Data.Fixed.HasResolution libraries/base 7.8.4 low new Feb 1, 2015
#10150 Suppress orphan instance warning per instance Compiler (Type checker) 7.11 low new Mar 9, 2015
#10324 our rts/ghc-prim/base shared library tricks don't work on Android Compiler 7.10.1 low new Apr 18, 2015
#10331 Accept HsSyn in splices and generate it in quotes (ghc-api) Template Haskell 7.11 low new Apr 20, 2015
#10391 Ability to get export list of TH reified module Template Haskell low new May 7, 2015
#10547 feature request: expanding type synonyms in error messages Compiler (Type checker) low 8.0.2 merge Jun 19, 2015
#307 Implicit Parameters and monomorphism None None low minor new Feb 16, 2005
#989 Build GHC on Windows using Microsoft toolchain Compiler low normal new Nov 6, 2006
#1192 GHC-only IOErrorType constructors, and is*Error(Type) functions Compiler 6.6 low minor new Mar 4, 2007
#1231 deprecation warnings are reported too often Compiler 6.6 low normal simonpj new Mar 16, 2007
#1311 newtypes of unboxed types disallowed - documentation bug and/or feature request Compiler 7.7 low normal osa1 new Apr 29, 2007
#1628 warning(s) for using stolen syntax that's not currently enabled Compiler 6.6.1 low normal new Aug 22, 2007
#1768 More flexible type signatures for data constructors Compiler 6.6.1 low normal new Oct 10, 2007
#2465 Fusion of recursive functions Compiler 6.8.2 low normal new Jul 24, 2008
#2708 Error message should suggest UnboxedTuples language extension Compiler (Parser) 6.9 low minor new Oct 18, 2008
#2896 Warning suggestion: argument not necessarily a binary operator Compiler 6.10.1 low normal new Dec 24, 2008
#7977 Optimization: Shift dropped list heads by coeffecient to prevent thunk generation Compiler 7.4.2 low new Jun 11, 2013
#2614 Enumeration of values for `Sys.Info.os`, `Sys.Info.arch` Core Libraries 6.8.3 low minor mjg new Sep 20, 2008
#3052 ghc FFI doesn't support thiscall Compiler (FFI) 6.10.1 low normal new Feb 27, 2009
#3372 Allow for multiple linker instances Runtime System (Linker) low normal new Jul 14, 2009
#3464 Find import declaration importing a certain function GHCi 6.10.4 low normal new Aug 26, 2009
#3483 Some mechanism for eliminating "absurd" patterns Compiler 6.10.4 low normal new Sep 3, 2009
#3547 Improve granularity of UndecidableInstances Compiler 6.10.4 low normal new Sep 28, 2009
#3619 allow to set ghc search path globally (a'la CPATH) Compiler 6.10.4 low normal new Oct 28, 2009
#3632 lift restrictions on records with existential fields, especially in the presence of class constraints Compiler 6.10.4 low normal new Nov 2, 2009
#3645 Layout and pragmas Compiler (Parser) 6.10.4 low normal new Nov 7, 2009
#3701 allow existential wrapper newtypes Compiler (Type checker) 6.10.4 low new Nov 28, 2009
#3744 Comparisons against minBound/maxBound not optimised for (Int|Word)(8|16|32) Compiler 6.13 low new Dec 11, 2009
#3753 Make ghci's -l option consistent with GNU ld's -l option GHCi 6.12.1 low new Dec 15, 2009
#3786 showing function arguments when stopped at its definition GHCi 6.12.1 low new Dec 25, 2009
#3869 RTS GC Statistics from -S should be logged via the eventlog system Runtime System 6.12.1 low new Feb 8, 2010
#3895 "Fix" pervasive-but-unnecessary signedness in GHC.Prim Compiler low new Feb 22, 2010
#3980 System.Posix.Signals should provide a way to set the SA_NOCLDWAIT flag Core Libraries 6.12.1 low new Apr 11, 2010
#4016 Strange display behaviour in GHCi Compiler 6.12.2 low new Apr 26, 2010
#4020 Please consider adding support for local type synonyms Compiler (Type checker) 6.12.2 low new Apr 27, 2010
#4052 Two sided sections Compiler (Parser) 6.12.2 low new May 7, 2010
#4096 New primops for indexing: index*OffAddrUsing# etc Compiler 6.12.2 low new May 25, 2010
#4180 do not consider associativity for unary minus for fixity resolution Compiler (Parser) 6.12.3 low new Jul 8, 2010
#4222 Template Haskell lets you reify supposedly-abstract data types Template Haskell 6.12.3 low new Jul 26, 2010
#4316 Interactive "do" notation in GHCi GHCi 7.0.3 low new Sep 15, 2010
#4329 GHC.Conc modifyTVar primitive Core Libraries 6.12.3 low new Sep 21, 2010
#4442 Add unaligned version of indexWordArray# Compiler 7.1 low new Oct 26, 2010
#4453 Allow specifying .hi files of imports on command line in batch mode Compiler 6.12.3 low new Oct 29, 2010
#4459 Polymorphic Data.Dynamic GHC API 7.1 low vivian new Oct 31, 2010
#4479 Implement TDNR Compiler (Type checker) 7.5 low new Nov 6, 2010
#4520 startup code on Windows should use SetDllDirectory("") Runtime System 7.0.1 low new Nov 22, 2010
#4815 Instance constraints should be used when deriving on associated data types Compiler 6.12.3 low new Dec 3, 2010
#4823 Loop strength reduction for array indexing Compiler 7.1 low new Dec 7, 2010
#4913 Make event tracing conditional on an RTS flag only Runtime System 7.0.1 low new Jan 21, 2011
#4955 increase error message detail for module lookups failure due to hi references Package system 6.12.1 low new Feb 11, 2011
#4959 Warning about variables with leading underscore that are used anyway Compiler (Parser) 7.0.1 low new Feb 14, 2011
#4980 Warning about module abbreviation clashes Compiler 7.0.1 low new Feb 24, 2011
#5016 Make Template Haskell: -ddump-splices generate executable code Template Haskell 7.0.2 low new Mar 12, 2011
#5059 Pragma to SPECIALISE on value arguments Compiler 7.0.3 low new Mar 29, 2011
#5073 Add blockST for nested ST scopes Compiler 7.0.3 low new Apr 1, 2011
#5171 Misfeature of Cmm optimiser: no way to extract a branch of expression into a separate statement Compiler 7.0.3 low new May 6, 2011
#5197 Support static linker semantics for archives and weak symbols Runtime System (Linker) 7.0.3 low new May 13, 2011
#5219 need a version of hs_init that returns an error code for command-line errors Runtime System 7.0.3 low new May 25, 2011
#5266 Licensing requirements and copyright notices None low new Jun 19, 2011
#5288 Less noisy version of -fwarn-name-shadowing Compiler 7.0.3 low new Jun 28, 2011
#5918 hsc2hs forces wordsize (i.e. -m32 or -m64) to be the choice of GHC instead of allowing a different (or no/default choice) hsc2hs 7.4.1 low new Mar 7, 2012
#8199 Get rid of HEAP_ALLOCED on Windows (and other non-Linux platforms) Compiler 7.7 low ezyang new Aug 30, 2013
#10063 State a law for foldMap Core Libraries 7.10.1-rc1 low new Feb 3, 2015
#10804 Rules conditional on strictess properties Compiler 7.10.2 low new Aug 28, 2015
#10869 Option to dump preprocessed source Driver 7.10.2 low new Sep 11, 2015
#11012 Support for unicode primes on identifiers. Compiler (Parser) 7.10.2 low new Oct 24, 2015
#11080 Open data kinds Compiler low jstolarek new Nov 11, 2015
#11140 add command-line option to GHC to dump raw parse trees of Haskell programs Compiler 7.10.2 low new Nov 27, 2015
#11191 provide `make uninstall` Build System low new Dec 9, 2015
#11373 GHC should support static archive creation on all systems Driver 7.11 low new Jan 7, 2016
#11377 Template Haskell only imports Template Haskell 7.11 low new Jan 8, 2016
#11561 Have static ghci link against its own copy of its libraries Runtime System (Linker) 8.1 low new Feb 9, 2016
#11581 TypeError requires UndecidableInstances unnecessarily Compiler (Type checker) 8.0.1-rc2 low new Feb 15, 2016
#11769 Support and redistributables for ARM64 (64bit) Compiler 7.10.3 low new Mar 29, 2016
#11815 Data.List: Add a function to get consecutive elements (mapConsecutives) libraries/base low new Apr 8, 2016
#11971 Unify error messages that suggest enabling extensions Compiler 7.10.3 low new Apr 22, 2016
#12139 Add TUI (text-based user interface) for GHCi GHCi 8.0.1 low new Jun 1, 2016
#12203 Allow constructors on LHS of (implicit) bidirectional pattern synonym Compiler (Type checker) 8.0.1 low new Jun 18, 2016
#12361 Add -dppr-ribbon-cols Compiler 8.0.1 low new Jul 3, 2016
#12362 don't complain about type variable ambiguity when the expression is parametrically polymorphic Compiler (Type checker) 8.1 low new Jul 3, 2016
#8304 more lenient operator sections (RelaxedSections extension) Compiler (Parser) 7.6.3 lowest new Sep 15, 2013
#8504 Provide minor GC residency estimates Runtime System 7.7 lowest simonmar new Nov 5, 2013
#860 CPP fails when a macro is used on a line containing a single quote character Compiler 6.4.2 lowest minor new Aug 10, 2006
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