[slime-devel] [PATCH] Supplying environment variables to Lisp

[Richard M Kreuter]

Hi,

I'd like to propose the following feature, implemented in the attached
patch: to allow slime-lisp-implementations to specify a list of strings
to augment the process environment of the Lisp process.  I've a couple
of uses for this feature:

(1) to run SLIME out of an SBCL build directory, with an implementation
    specification like this:

    (sbcl-cvs
     ("/home/me/sbcl-cvs/src/runtime/sbcl"
      "--core" "/home/me/sbcl-cvs/output/sbcl.core")
     :program-environment ("SBCL_HOME=/home/me/sbcl-cvs/contrib/"))

(2) to work with Lisp applications that need environment variables
    during initialization, which variables I don't want to set
    Emacs-wide (because they might leak into unrelated things I do in
    other buffers, etc):

     (myworld-v1 ("/path/to/myworld-v1/bin/myworld")
      :program-environment
      ("LD_LIBRARY_PATH="/path/to/myworld-v1/lib/")
     (myworld-v2 ("/path/to/myworld-v2/bin/myworld")
      :program-environment
      ("LD_LIBRARY_PATH="/path/to/myworld-v2/lib/"))

I know these things can already be done with wrapper scripts (and they
still can), but I find wrapper scripts less pleasant to maintain than my
.emacs file.

The patch has been tested under GNU Emacs CVS and Xemacs 21.4.  If the
feature is okay but the implementation needs work in order to be merged,
please let me know.

Thanks,
RmK

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