diff --git a/CuisVM.app/Contents/Linux-x86_64/squeak b/CuisVM.app/Contents/Linux-x86_64/squeak
index 99b057b29..a44d798fc 100755
--- a/CuisVM.app/Contents/Linux-x86_64/squeak
+++ b/CuisVM.app/Contents/Linux-x86_64/squeak
@@ -1,16 +1,14 @@
 #!/bin/sh
 # Run the VM, setting SQUEAK_PLUGINS if unset to the VM's containing directory
 # if unset, and ensuring LD_LIBRARY_PATH includes the VM's containing directory.
-BIN=`/usr/bin/dirname "$0"`/lib/squeak/5.0-202312181441-64bit
-GDB=
+BIN=`dirname "$0"`/lib/squeak/5.0-202312181441-64bit
 if [ "${SQUEAK_PLUGINS-unset}" = unset ]; then
 	export SQUEAK_PLUGINS="$BIN"
 fi
 if [ "$1" = '-gdb' ]; then
-	GDB=gdb
+	GDB="gdb --args"
 	shift
-	echo;echo run $@; echo
-	set --
+	echo;echo run "$@"; echo
 fi
 # At least on linux LD_LIBRARY_PATH's components must be absolute path names
 case "$BIN" in
@@ -26,16 +24,16 @@ fi
 # libc (e.g. through the FFI) then it must use the same version that the VM uses
 # and so it should take precedence over /lib libc.  This is done by setting
 # LD_LIBRARY_PATH appropriately, based on ldd's idea of the libc use by the VM.
-LIBC_SO="`/usr/bin/ldd "$BIN/squeak" | /bin/fgrep /libc. | sed 's/^.*=> \([^ ]*\).*/\1/'`"
+LIBC_SO="`ldd "$BIN/squeak" | grep -F /libc. | sed 's/^.*=> \([^ ]*\).*/\1/'`"
 PLATFORMLIBDIR=`expr "$LIBC_SO" : '\(.*\)/libc.*'`
 
 if [ "$PLATFORMLIBDIR" = "" ]; then
 {
-	echo "Error. Could not determine platform's libc path for VM. " 
+	echo "Error. Could not determine platform's libc path for VM. "
 	echo "Try forcing \$PLATFORMLIBDIR in $0, based on LIBC_SO."
-	echo "Please report what works to squeak [vm-dev] mail list." 
+	echo "Please report what works to squeak [vm-dev] mail list."
 	echo "  LIBC_SO="$LIBC_SO
-	cat /etc/*-release*  |  grep -v // | sed 's/^/  /' 
+	cat /etc/*-release*  |  grep -v // | sed 's/^/  /'
 	echo -n "  UNAME=" ; uname -a
 	MACHINE=`uname -m`
 	case "$MACHINE" in
@@ -43,7 +41,7 @@ if [ "$PLATFORMLIBDIR" = "" ]; then
 			echo "  System seems to be 64 bit. You may need to (re)install the 32-bit libraries."
 			;;
 	esac
-	exit 1 
+	exit 1
 } 1>&2
 fi
 # prepending is less flexible but safer because it ensures we find the plugins
@@ -53,4 +51,4 @@ case $PLATFORMLIBDIR in
 /lib|/usr/lib)	SVMLLP=/lib:/usr/lib;;
 *)				SVMLLP="$PLATFORMLIBDIR:/lib:/usr$PLATFORMLIBDIR:/usr/lib"
 esac
-LD_LIBRARY_PATH="$PLUGINS:$SVMLLP:${LD_LIBRARY_PATH}" exec $GDB "$BIN/squeak" "$@"
+LD_LIBRARY_PATH="$PLUGINS:$SVMLLP:${LD_LIBRARY_PATH}" exec $GDB $LOADER "$BIN/squeak" "$@"
diff --git a/RunCuisOnGuix.sh b/RunCuisOnGuix.sh
new file mode 100755
index 000000000..0388e0685
--- /dev/null
+++ b/RunCuisOnGuix.sh
@@ -0,0 +1,2 @@
+#!/usr/bin/env -S guix shell bash coreutils grep sed glibc util-linux:lib pulseaudio libsm libxrender mesa libxext libx11 libsm libice gdb -- bash
+LOADER=$GUIX_ENVIRONMENT/lib/ld-linux-x86-64.so.2 LD_LIBRARY_PATH=$GUIX_ENVIRONMENT/lib "`dirname $0`/RunCuisOnLinux.sh" "$@"
diff --git a/RunCuisOnLinux.sh b/RunCuisOnLinux.sh
index dd519e77a..0382be5a8 100755
--- a/RunCuisOnLinux.sh
+++ b/RunCuisOnLinux.sh
@@ -45,7 +45,6 @@ else # all-in-one bundle
 fi
 
 VM="${BINDIR}${APP}"
-VMOPTIONS="-encoding UTF-8"
 STARGS=()
 
 # separate vm and script arguments
@@ -53,11 +52,13 @@ while [[ -n "$1" ]] ; do
     case "$1" in
          *.image) break;;
          *.st|*.cs) STARGS+=("$1");;
+	 -gdb) DBGOPTIONS=-gdb;;
 	 --) break;;
-         *) VMARGS="${VMARGS} $1";;
+         *) VMARGS+=" $1";;
     esac
     shift
 done
+VMOPTIONS+=" -encoding UTF-8"
 while [[ -n "$1" ]]; do
     case "$1" in
          *.image) IMAGE="$1";;
@@ -151,9 +152,9 @@ ensure_image() {
 detect_sound() {
     if pulseaudio --check 2>/dev/null ; then
         if "${VM}" --help 2>/dev/null | grep -q vm-sound-pulse ; then
-	    VMOPTIONS="${VMOPTIONS} -vm-sound-pulse"
+	    VMOPTIONS+=" -vm-sound-pulse"
         else
-            VMOPTIONS="${VMOPTIONS} -vm-sound-oss"
+            VMOPTIONS+=" -vm-sound-oss"
             if padsp true 2>/dev/null; then
                 SOUNDSERVER=padsp
             fi
@@ -168,7 +169,7 @@ detect_sound
 
 # Enable per-monitor scaling to work around memory leak:
 # https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/642
-export SQUEAK_DISPLAY_PER_MONITOR_SCALE=1 
+export SQUEAK_DISPLAY_PER_MONITOR_SCALE=1
 
 echo "Using ${VM} ..."
-exec ${SOUNDSERVER} "${VM}" ${VMOPTIONS} ${VMARGS} "${IMAGE}" -u "${STARGS[@]}"
+exec ${SOUNDSERVER} "${VM}" ${DBGOPTIONS} ${VMOPTIONS} ${VMARGS} "${IMAGE}" -u "${STARGS[@]}"