Adding a Common Lisp wrapper.

Features:
  + configurable via environment variables
  + can skip the actual launching of the lisp implementation (source it
  with NIX_LISP_SKIP_CODE=1 to get all the settings)
  + currently supports SBCL, CLisp, ECL
  + determines lisp implementation from NIX_LISP_COMMAND variable or
  from buildInputs
  + sets ASDF search path for packages using buildInputs

pkgs/development/lisp-modules/clwrapper/cl-wrapper.sh

@@ -0,0 +1,44 @@
+#! /bin/sh
+# Part of NixPkgs package collection
+# This script can be used at your option under the same license as NixPkgs or 
+# under MIT/X11 license
+
+eval "$NIX_LISP_PREHOOK"
+
+NIX_LISP_COMMAND="$1"
+shift
+
+[ -z "$NIX_LISP" ] && NIX_LISP="${NIX_LISP_COMMAND##*/}"
+
+export NIX_LISP NIX_LISP_LOAD_FILE NIX_LISP_EXEC_CODE NIX_LISP_COMMAND NIX_LISP_FINAL_PARAMETERS
+
+case "$NIX_LISP" in
+	sbcl)
+		NIX_LISP_LOAD_FILE="--load"
+		NIX_LISP_EXEC_CODE="--eval"
+		NIX_LISP_FINAL_PARAMETERS=
+		;;
+	ecl)
+		NIX_LISP_LOAD_FILE="-load"
+		NIX_LISP_EXEC_CODE="-eval"
+		NIX_LISP_FINAL_PARAMETERS=
+		;;
+	clisp)
+		NIX_LISP_LOAD_FILE="-c -l"
+		NIX_LISP_EXEC_CODE="-x"
+		NIX_LISP_FINAL_PARAMETERS="-repl"
+		;;
+esac
+
+NIX_LISP_ASDF_REGISTRY_CODE="
+  (progn
+    (setf asdf:*default-source-registries* '(asdf/source-registry:environment-source-registry))
+    (asdf:initialize-source-registry)
+    )
+"
+
+[ -z "$NIX_LISP_SKIP_CODE" ] && "$NIX_LISP_COMMAND" $NIX_LISP_EARLY_OPTIONS \
+	$NIX_LISP_EXEC_CODE "(load \"$NIX_LISP_ASDF/lib/common-lisp/asdf/build/asdf.lisp\")" \
+	$NIX_LISP_EXEC_CODE "$NIX_LISP_ASDF_REGISTRY_CODE" \
+	$NIX_LISP_FINAL_PARAMETERS \
+	"$@"