lispPackages: fix build

pkgs/development/lisp-modules/clwrapper/default.nix

@@ -15,6 +15,7 @@ stdenv.mkDerivation {
     chmod a+x "$out"/bin/*
 
     substituteAll "${./setup-hook.sh}" "setup-hook-parsed"
+    addEnvHooks(){ true; };
     source setup-hook-parsed
     setLisp "${lisp}"
     echo "$NIX_LISP"

pkgs/development/lisp-modules/clwrapper/setup-hook.sh

@@ -9,7 +9,7 @@ addASDFPaths () {
 }
 
 setLisp () {
-    if [ -z "$NIX_LISP_COMMAND" ]; then 
+    if [ -z "${NIX_LISP_COMMAND:-}" ]; then 
       for j in "$1"/bin/*; do
           case "$(basename "$j")" in
               sbcl) NIX_LISP_COMMAND="$j" ;;
@@ -20,7 +20,7 @@ setLisp () {
           esac
       done
     fi
-    if [ -z "$NIX_LISP" ]; then 
+    if [ -n "${NIX_LISP_COMMAND:-}" ] && [ -z "${NIX_LISP:-}" ]; then 
         NIX_LISP="${NIX_LISP_COMMAND##*/}"
     fi
 }
@@ -35,5 +35,5 @@ export NIX_LISP_COMMAND NIX_LISP CL_SOURCE_REGISTRY NIX_LISP_ASDF
 
 addEnvHooks "$targetOffset" addASDFPaths setLisp collectNixLispLDLP
 
-mkdir -p "$HOME"/.cache/common-lisp || HOME="$TMP/.temp-$USER-home"
+mkdir -p "$HOME"/.cache/common-lisp || HOME="$TMP/.temp-${USER:-nixbld}-home"
 mkdir -p "$HOME"/.cache/common-lisp