Or more strongly : language extensions explicitly articulating which fancy features are enabled in a given module makes code more reason-able! <div>And has made evolving code styles much easier to learn </div><div><br></div><div>I still remember when having a toplevel -fglasgow-extensions was a thing, and I personally only started to understand various fancy techniques after the tools / features used In a given module had to be explicitly enumerated. <span></span></div><div><br></div><div> Phrased differently: i agree with Richard </div><div><br></div><div><br></div><div>-Carter <br><br>On Friday, August 19, 2016, Richard Eisenberg &lt;<a href="mailto:rae@cs.brynmawr.edu">rae@cs.brynmawr.edu</a>&gt; wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I personally think this should be in scope. And indeed the Haskell 2010 Report does codify several extensions in Section 12.3.<br>
<br>
Richard<br>
<br>
&gt; On Aug 19, 2016, at 9:57 PM, M Farkas-Dyck &lt;<a href="javascript:;" onclick="_e(event, &#39;cvml&#39;, &#39;m.farkasdyck@gmail.com&#39;)">m.farkasdyck@gmail.com</a>&gt; wrote:<br>
&gt;<br>
&gt; Is this in scope? I.e. a conformant Haskell implementation must allow<br>
&gt; the extension, but using it remains optional.<br>
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