Bill Clementson's Blog

Bits and pieces (mostly Lisp-related) that I collect from the ether.

December 2004
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OS X - My new Lisp platform

Tuesday, December 7, 2004

I recently bought a 20-inch iMac G5 and am still getting used to using this lovely machine. I ostensibly bought it for my daughter; however, she lets me use it sometimes too! :-)

Since IBM is selling off it's PC division, there has been some wild speculation that this might be a prelude to some sort of IBM/Apple relationship. I don't think an acquisition will happen; however, it's fun to fantasize about what might happen in any of a number of different scenarios. But I won't do that here - I'll leave that for others.

Meanwhile, back to my new G5. I've installed Allegro CL, CLISP, CMUCL, OpenMCL, LispWorks, and SBCL on it. With the exception of LispWorks, I've configured the other implementations to run under Emacs 21.3 with SLIME. With LispWorks (at least for the time being), I'm using the LispWorks IDE since I'm using the LispWorks Personal version (which does not support the creation of console versions of LispWorks which are needed for inferior-lisp usage in Emacs). When I learn a bit more about AppleScript, I'll create a startup script similar to my Win32 script so that I can use LispWorks Personal in OS X with Emacs/SLIME in the same manner as I'm doing on Win32.

Here's a screen shot (you might need to click on the image and zoom in on it in order to see it properly) of Emacs loaded with a separate SLIME REPL for ACL, CLISP, CMUCL, OpenMCL, and SBCL and with LispWorks running in it's own IDE.



ACL, CLISP and LispWorks are very similar to the Win32 versions (at least after just some very cursory playing). CMUCL, SBCL and OpenMCL are new CL implementation options that I didn't have available on Win32, so I'm looking forward to playing around with them on OS X. With the availability of so many quality CL implementations on OS X, this has got to be one of the best supported OSes for CL hackers today!

Since I'm a relative newbie to OS X and Unix-like OS'es, I'd appreciate any suggestions/advice from people. For example, I installed all of the CL implementations in ~/bin/ which doesn't seem to be what most people do. Most people seem to install in /usr/local/ but you need admin authority to install there and it's in the default path. Since I often install different versions of the same CL implementation (or "tweak" the installs) and don't always want them in the default path, I usually like to explicitly point to the CL implementation in my .emacs file rather than default it in from the system path. I'd be interested in hearing why other people prefer to install in /usr/local/ - is it just for convenience or are there good reasons to have the installs under the /usr/local/ directory?

Update: My apologies for the (original) huge jpg size :-(. I've replaced the in-line image with a smaller one but you can click on it to get the more detailed picture. Thanks Zach for letting me know and for sending me the smaller image! :-)

emacs Copyright © 2005 by Bill Clementson