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Dear all,</div><div dir="ltr">Richard has now updated the proposal, but only Arnaud has commented on it. I think this requires a few more eyes, since it will permeate the language once people start using linear types, and we are already thinking about introducing modifiers in other parts.</div><div dir="ltr"><br></div><div dir="ltr">In fact, I’ve realised that there’s a (grammar) conflict between this proposal and <a href="https://github.com/ghc-proposals/ghc-proposals/pull/390">https://github.com/ghc-proposals/ghc-proposals/pull/390</a> (the fine-grained pragmas for type classes and instances). This proposal defines</div><div dir="ltr"><br></div><div dir="ltr"><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition"><span class="blob-code-inner blob-code-marker">topdecl ::= {modifier} 'type' simpletype '=' type</span></td></tr><tr></tr></tbody></table><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition"><span class="blob-code-inner blob-code-marker">| {modifier} 'data' [context '=>'] simpletype ['=' constrs] [deriving]</span></td></tr><tr></tr></tbody></table><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition"><span class="blob-code-inner blob-code-marker">| {modifier} 'newtype' [context '=>'] simpletype = newconstr [deriving]</span></td></tr><tr></tr></tbody></table><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition"><span class="blob-code-inner blob-code-marker">| {modifier} 'class' [scontext '=>'] tycls tyvar ['where' cdecls]</span></td></tr><tr></tr></tbody></table><span class="blob-code-inner blob-code-marker">| {modifier} 'instance' [scontext '=>'] qtycls inst ['where' idecls]</span></div><div dir="ltr"><br></div><div dir="ltr">But #390 defines (note the ; at the end of the modifiers block):</div><div dir="ltr"><br></div><div dir="ltr"><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition is-hovered"><span class="blob-code-inner blob-code-marker">modifiers : {- empty -} | ('%' qtycon)* ';'</span></td></tr></tbody></table><table class="diff-table js-diff-table tab-size "><tbody><tr><td class="blob-code blob-code-addition"><span class="blob-code-inner blob-code-marker">cl_decl</span> : modifiers 'class' tycl_hdr fds where_cls</td></tr></tbody></table><div dir="ltr"><br></div>I guess we should sort this out before accepting any of them.</div><div dir="ltr"><br></div><div dir="ltr">Alejandro<br><br>
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<div dir="ltr" class="gmail_attr">El 28 jun 2021 21:26:45, Alejandro Serrano Mena <<a href="mailto:trupill@gmail.com">trupill@gmail.com</a>> escribió:<br></div>
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<div><div><div dir=""><div dir="ltr">Richard, will you take care of making those small changes to the proposal? That way we could mark this as accepted.</div><div dir="ltr"><br></div><div dir="ltr">Regards,</div><div dir="ltr">Alejandro<br><br>
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<div dir="ltr" class="gmail_attr">El 28 jun 2021 9:01:28, Spiwack, Arnaud <<a href="mailto:arnaud.spiwack@tweag.io">arnaud.spiwack@tweag.io</a>> escribió:<br></div>
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<div dir="ltr">Yes, I believe that Richard and I are in agreement now. I don't think all the conclusions have been added to the proposal yet, though; but whatever's left, it's fairly minor.<br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jun 24, 2021 at 1:29 PM Alejandro Serrano Mena <<a href="mailto:trupill@gmail.com">trupill@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir=""><div dir="ltr">
Dear all,</div><div dir="ltr">This discussion has been dormant for some time, but it’s time to revive it!</div><div dir="ltr"><br></div><div dir="ltr">Richard, Arnaud, did you manage to reach conclusion about the modification to the proposal?</div><div dir="ltr"><br></div><div dir="ltr">Apart from that, is there any other concern about the proposal? As I said in my original message, this is a very small amendment to an already-existing proposal, so if we accepted the previous one I see no problem in this one. I’ll wait until Richard and Arnaud get back on the issue, and then assume that silence for a week is acceptance.</div><div dir="ltr"><br></div><div dir="ltr">Regards,</div><div dir="ltr">Alejandro</div><div dir="ltr"><br>
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<div dir="ltr" class="gmail_attr">El 11 jun 2021 14:55:41, Spiwack, Arnaud <<a href="mailto:arnaud.spiwack@tweag.io" target="_blank">arnaud.spiwack@tweag.io</a>> escribió:<br></div>
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<div dir="ltr"><div>I think that my discussion with Richard has come to a conclusion (it should incur a small modification to the proposal).</div><div><br></div><div>It is a very small (amendment to a) proposal, let's find a consensus on this one quickly.<br></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 12, 2021 at 11:26 AM Spiwack, Arnaud <<a href="mailto:arnaud.spiwack@tweag.io" target="_blank">arnaud.spiwack@tweag.io</a>> wrote:<br></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"><div>I've commented on the PR [ <a href="https://github.com/ghc-proposals/ghc-proposals/pull/392#pullrequestreview-657652189" target="_blank">https://github.com/ghc-proposals/ghc-proposals/pull/392#pullrequestreview-657652189</a> ] the changes on the syntax of lambda expressions are not motivated at all, I think at the very least there should be a discussion in the Alternatives section.</div><div><br></div><div>But mostly, I'm worried about the implications/interactions that these changes have with linear types.</div><div><br></div><div>(I'll be off for the rest of the week starting tonight, so I'll be back on this conversation on Monday, most likely)<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, May 11, 2021 at 10:10 AM Alejandro Serrano Mena <<a href="mailto:trupill@gmail.com" target="_blank">trupill@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div dir=""><div dir="ltr">
Dear Committee,</div><div dir="ltr">This proposal seems a natural extension of #370, covering some additional cases (modifiers to classes and other declarations) that we’ve found along the way. My recommendation is acceptance.</div><div dir="ltr"><br></div><div dir="ltr">Regards,</div><div dir="ltr">Alejandro<br><br>
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<div dir="ltr" class="gmail_attr">On 4 May 2021 at 09:41:56, Joachim Breitner <<a href="mailto:mail@joachim-breitner.de" target="_blank">mail@joachim-breitner.de</a>> wrote:<br></div>
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Dear Committe,<br><br>Clarify modifiers design principle<br>has been proposed by Richard<br><a href="https://github.com/ghc-proposals/ghc-proposals/pull/392" target="_blank">https://github.com/ghc-proposals/ghc-proposals/pull/392</a><br><br>This is an amendmend to #370, see the PR description for links to diffs<br>etc.<br><br>I propose Alejandro as the shepherd, as he shepherded #370 before.<br><br>Please guide us to a conclusion as outlined in <br><a href="https://github.com/ghc-proposals/ghc-proposals#committee-process" target="_blank">https://github.com/ghc-proposals/ghc-proposals#committee-process</a><br><br>Thanks,<br>Joachim<br>-- <br>-- <br>Joachim Breitner<br> <a href="mailto:mail@joachim-breitner.de" target="_blank">mail@joachim-breitner.de</a><br> <a href="http://www.joachim-breitner.de/" target="_blank">http://www.joachim-breitner.de/</a><br><br><br>_______________________________________________<br>ghc-steering-committee mailing list<br><a href="mailto:ghc-steering-committee@haskell.org" target="_blank">ghc-steering-committee@haskell.org</a><br><a href="https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-steering-committee" target="_blank">https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-steering-committee</a><br>
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