Package EXT does not exist

1
votes

I am currently working through the Land of Lisp examples and have run into a compile exception: package EXT does not exist from this line I suspect: (ext:shell (concatenate 'string "dot -Tpng -O" fname))

I am running my repl inside emacs with slime and am unsure as to how to remedy this after some googling of the error.

Any help would be much appreciated.

1
lispcommon-lispclisp
What is your platform? Where did you get CLISP? How are you invoking it? Please see how to report bugs - sds
I run arch Linux and have been using yaourt/ pac-man for all my packages. I believe that I also have sbcl installed and am unsure if emacs and the swank framework is using clisp or sbcl. I'm going to do a little more investigation into it, was just a little frustrated. Is the ext package a default library for clisp? - Forbidden303
Yes, CLISP comes with EXT by default. You cannot build CLISP without it. See also clisp.org/impnotes/imppack.html - sds
I just ran CLISP from my shell and loaded my file in and all works correct. I suspect that emacs and the swank framework is to blame, either in it doesn't use CLISP or some other unseen error(the investigation continues). Thanks for your time. - Forbidden303
Btw.: SBCL has similar ways to call an external program. See: sbcl.org/manual/index.html#Running-external-programs - Rainer Joswig

1 Answers

1
votes

It was in fact that SBCL was set as the default lisp program in emacs.

By replacing:

(setq inferior-lisp-program "/usr/bin/sbcl")

To:

(setq inferior-lisp-program "/usr/bin/clisp")

in my emacs configuration file fixed the issue. (On a Unix system at least)