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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Dear maintainers of<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">bytestring<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">cabal<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> vector<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">time<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:36.0pt"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">dph<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">As discussed in Trac #6032 I am deprecating
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> PolymorphicComponents<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">in favour of the single flag<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""> RankNTypes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Could you update your packages to match? Until then we’ll need to accept the deprecation warnings that GHC will produce when building them.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><br>
The change is backward compatible; older GHCs understand RankNTypes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">In addition to changing any LANGAUGE pragmas, there may be some changes to Cabal’s flaggery.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">Simon<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/PackageDescription/Check.hs:1114: , RankNTypes, PolymorphicComponents, ExistentialQuantification<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/GHC.hs:459: ,(PolymorphicComponents , fglasgowExts)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/Hugs.hs:194: ,(PolymorphicComponents , ext98)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/UHC.hs:103: (PolymorphicComponents, alwaysOn),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Language/Haskell/Extension.hs:186: | PolymorphicComponents<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./bytestring/Data/ByteString/Builder/Internal.hs:1:{-# LANGUAGE ScopedTypeVariables, CPP, BangPatterns, Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/PackageDescription/Check.hs:1113: , FunctionalDependencies, Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/GHC.hs:457: ,(Rank2Types , fglasgowExts)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/Hugs.hs:193: ,(Rank2Types , ext98)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Distribution/Simple/UHC.hs:108: (Rank2Types, alwaysOn),<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./Cabal/Cabal/Language/Haskell/Extension.hs:177: | Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./containers/Data/Graph.hs:3:{-# LANGUAGE Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./dph/dph-lifted-copy/Data/Array/Parallel/Lifted/TH/Repr.hs:1:{-# LANGUAGE TemplateHaskell, Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Calendar/Days.hs:13:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Calendar/Days.hs:20:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/Scale.hs:19:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/Scale.hs:27:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/Scale.hs:45:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/TAI.hs:24:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/TAI.hs:31:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/UTC.hs:23:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/UTC.hs:37:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Clock/UTC.hs:66:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:8:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:21:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:30:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:34:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:64:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/Format/Parse.hs:344:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/LocalTime.hs:22:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/LocalTime.hs:35:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/LocalTime.hs:79:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/TimeOfDay.hs:19:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/TimeOfDay.hs:34:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/TimeZone.hs:24:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./time/Data/Time/LocalTime/TimeZone.hs:38:#if LANGUAGE_Rank2Types<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Fusion/Stream/Monadic.hs:1:{-# LANGUAGE ExistentialQuantification, Rank2Types, BangPatterns #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Fusion/Stream.hs:1:{-# LANGUAGE FlexibleInstances, Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Generic/Base.hs:1:{-# LANGUAGE Rank2Types, MultiParamTypeClasses, FlexibleContexts,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Generic/New.hs:1:{-# LANGUAGE Rank2Types, FlexibleContexts #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Generic.hs:1:{-# LANGUAGE Rank2Types, MultiParamTypeClasses, FlexibleContexts,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Primitive.hs:1:{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TypeFamilies, ScopedTypeVariables, Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Storable.hs:1:{-# LANGUAGE MultiParamTypeClasses, FlexibleInstances, TypeFamilies, Rank2Types, ScopedTypeVariables #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector/Unboxed.hs:1:{-# LANGUAGE Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif"">./vector/Data/Vector.hs:1:{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TypeFamilies, Rank2Types #-}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
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