Erik is correct -- if you download <a href="http://ycombinator.com/arc/arc3.1.tar">http://ycombinator.com/arc/arc3.1.tar</a> instead of arc3.tar, you can use Racket. The reason that Arc used to work only on MzScheme 372 is because of immutable conses. Eli Barzilay helped get Arc working with them: <a href="http://arclanguage.com/item?id=10254">http://arclanguage.com/item?id=10254</a> <div class="gmail_quote">On Mon, May 21, 2012 at 5:56 AM, Erik Silkensen <<a href="mailto:eriksilkensen@gmail.com" target="_blank">eriksilkensen@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> The arc page is out of date -- it will run with the MzScheme included in the current Racket download (<a href="https://sites.google.com/site/arclanguagewiki/getting-started/install-arc" target="_blank">https://sites.google.com/site/arclanguagewiki/getting-started/install-arc</a>) <div><div class="h5"> On May 21, 2012, at 12:37 AM, Marijn wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 14-05-12 08:03, Zachary Kanfer wrote: >> I'd like to write a program (in Arc, which is a language on top of >> Racket) > > Reading this I thought I'd see whether there is any truth to it, but > <a href="http://arclanguage.org/install" target="_blank">http://arclanguage.org/install</a> still claims that you need MzScheme > 372, so no Racket there. > > Marijn > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.19 (GNU/Linux) > Comment: Using GnuPG with Mozilla - <a href="http://enigmail.mozdev.org/" target="_blank">http://enigmail.mozdev.org/</a> > > iEYEARECAAYFAk+54o4ACgkQp/VmCx0OL2wmuQCfWyrfKBydrmtL7ntKxiivWyIf > D4cAoJIj4pNTy4mqa31q80hFqSBhxH/s > =TDvO > -----END PGP SIGNATURE----- </div></div>> ____________________ > Racket Users list: > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> </blockquote></div>