<div dir="ltr">A useful trick is that you can access the source of a function or type directly by clicking the 'source' link to the right of the name in the documentation[1]. This will take you to the module where the identifier was defined rather than where it was imported from. (For example, Maybe is defined in Data.Maybe[2].)<br><br>[1]: <a href="https://hackage.haskell.org/package/base-4.5.0.0/docs/Prelude.html">https://hackage.haskell.org/package/base-4.5.0.0/docs/Prelude.html</a><br><br>[2]: <a href="https://hackage.haskell.org/package/base-4.5.0.0/docs/src/Data-Maybe.html#Maybe">https://hackage.haskell.org/package/base-4.5.0.0/docs/src/Data-Maybe.html#Maybe</a><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 12, 2015 at 10:03 AM, Brandon Allbery <span dir="ltr"><<a href="mailto:allbery.b@gmail.com" target="_blank">allbery.b@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><span class="">On Wed, Aug 12, 2015 at 12:54 PM, <span dir="ltr"><<a href="mailto:debdutk@gnulinuxed.tk" target="_blank">debdutk@gnulinuxed.tk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
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<p>I was reading the book "The Haskell Road to Logic, Math and Programming" and it refers to /usr/lib/hugs/libraries/Hugs/ as the probable location for Prelude.hs. I am currently using Elementary OS Luna (based of Ubuntu 12.04) and could not file the file at the specified location. Can anyone please tell me where to find it?</p></div></blockquote></span><div>Hugs is obsolete and unmaintained, so you are unlikely to find that anywhere.</div><div><br></div><div>ghc compiles, where Hugs is an interpreter, so it does not come with Prelude source.</div><div><br></div><div>The API documentation gives me a link to <a href="http://lambda.haskell.org/platform/doc/current/ghc-doc/libraries/haskell2010-1.1.1.0/src/Prelude.html" target="_blank">http://lambda.haskell.org/platform/doc/current/ghc-doc/libraries/haskell2010-1.1.1.0/src/Prelude.html</a> (syntax-highlighted source). Beyond that you'd need to get the source to ghc; note that there will be three different Prelude sources (haskell98 standard, haskell2010 standard, and ghc's default behavior) and that all three are largely built from parts imported from elsewhere.</div></div><span class="HOEnZb"><font color="#888888"><div><br></div>-- <br><div><div dir="ltr"><div>brandon s allbery kf8nh sine nomine associates</div><div><a href="mailto:allbery.b@gmail.com" target="_blank">allbery.b@gmail.com</a> <a href="mailto:ballbery@sinenomine.net" target="_blank">ballbery@sinenomine.net</a></div><div>unix, openafs, kerberos, infrastructure, xmonad <a href="http://sinenomine.net" target="_blank">http://sinenomine.net</a></div></div></div>
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