<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 10, 2021, at 8:50 AM, Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com" class="">simonpj@microsoft.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14.666666984558105px; 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="">build with hadrian, and then continue using make with the artifacts (partially) built by Hadrian</span></div></blockquote></div><br class=""><div class="">I almost suggested that this had to be the reason for the back-compat design, but I assumed I had to be wrong. I also agree this is a non-goal; I'm quite happy to be forced to pick one or the other and stick with that choice until blasting away all build products.</div><div class=""><br class=""></div><div class="">Richard</div></body></html>