<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">The truth is that (Type :: Type) is true no matter what (though you'd need KindSignatures for GHC to accept that). The features that were previously -XTypeInType have been moved into -XPolyKinds (and a few in -XDataKinds), because there seemed to be very little reason to keep the two extensions separate. PolyKinds essentially allows two things: it allows users to write variables and other constructs (like `forall`) in kinds, and it allows GHC to do kind-generalization. But nothing about -XPolyKinds really changes the relationship between types and kinds.<div class=""><br class=""></div><div class="">Richard<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Dec 3, 2020, at 2:53 PM, Iavor Diatchki <<a href="mailto:iavor.diatchki@gmail.com" class="">iavor.diatchki@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Oh? Perhaps I am confused, if we can have PolyKinds without TypeInType, I'd be happy to change my vote. My understanding was that basically `TypeInType` got renamed to `PolyKinds` but I might be confused.<div class=""><br class=""></div><div class="">-Iavor</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 3, 2020 at 11:50 AM Alejandro Serrano Mena <<a href="mailto:trupill@gmail.com" class="">trupill@gmail.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div dir="ltr" class="">But PolyKinds does not require TypeInType, according to the docs [<a href="https://downloads.haskell.org/ghc/latest/docs/html/users_guide/glasgow_exts.html#extension-PolyKinds" target="_blank" class="">https://downloads.haskell.org/ghc/latest/docs/html/users_guide/glasgow_exts.html#extension-PolyKinds</a>] it is in fact the other way around: TypeInType implies PolyKinds. Of course, the fact that kinds and types are unified may leak somehow, but I have a hard time figuring out an example of such.</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El jue, 3 dic 2020 a las 18:51, Iavor Diatchki (<<a href="mailto:iavor.diatchki@gmail.com" target="_blank" class="">iavor.diatchki@gmail.com</a>>) escribió:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class="">I would totally support that if PolyKinds was implemented without requiring TypeInType, but with the current design for me this is a solid `no`.<div class=""><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Dec 3, 2020 at 9:48 AM Joachim Breitner <<a href="mailto:mail@joachim-breitner.de" target="_blank" class="">mail@joachim-breitner.de</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br class="">
<br class="">
Am Donnerstag, den 03.12.2020, 16:40 +0000 schrieb Richard Eisenberg:<br class="">
> Vote for PolyKinds!<br class="">
<br class="">
convinced.<br class="">
<br class="">
Cheers,<br class="">
Joachim<br class="">
-- <br class="">
Joachim Breitner<br class="">
<a href="mailto:mail@joachim-breitner.de" target="_blank" class="">mail@joachim-breitner.de</a><br class="">
<a href="http://www.joachim-breitner.de/" rel="noreferrer" target="_blank" class="">http://www.joachim-breitner.de/</a><br class="">
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