<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Feb 28, 2021, at 3:25 AM, Ben Franksen <<a href="mailto:ben.franksen@online.de" class="">ben.franksen@online.de</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 11px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">What are these other GHC features? Does the paper explain this?</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 11px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 11px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Otherwise where can I read more about it?</span></div></blockquote></div><br class=""><div class="">I think it was data families. But, perhaps more troublesome is the fact that the paper assumes a dependently-typed internal language. Maybe it's possible to do this without dependent types in the internal language, but I'm not sure how to begin to think about that problem.</div><div class=""><br class=""></div><div class="">I was about to write that it might be helpful to have a GHC proposal to implement this paper, which would depend on (and provide further motivation for) having dependent types... but I'm not actually sure that would be productive at this point.</div><div class=""><br class=""></div><div class="">I have spent some time thinking about how to clear my decks to make more time for implementation work, and I expect to prioritize this more going forward.</div><div class=""><br class=""></div><div class="">Richard</div></body></html>