diff --git a/scripts/build.sh b/scripts/build.sh
index c7751ee..df12bc0 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -65,9 +65,12 @@ function inner() {
         for dir in bin etc lib include; do
 	    if [[ -d "${dir}" ]]; then
                 pushd $dir
-                for i in $( find /apps/$pkg/$dir -maxdepth 1 -type f ); do
-                    fn=$( basename $i )
-                    [[ -e $fn ]] && rm $fn && ln -s $i
+                apps_subdir=/apps/"${pkg}"/"${dir}"
+                for i in $( find "${apps_subdir}" -type f ); do
+                    fn="${i//$apps_subdir\//}"
+                    [[ -e $fn ]] && rm $fn
+                    [[ "${fn}" != "${fn%/*}" ]] && mkdir -p "${fn%/*}"
+                    ln -s "${i}" "${fn}"
                 done
                 popd
 	    fi
diff --git a/scripts/dev_prep.sh b/scripts/dev_prep.sh
new file mode 100644
index 0000000..f7ee039
--- /dev/null
+++ b/scripts/dev_prep.sh
@@ -0,0 +1,190 @@
+#!/usr/bin/env bash
+###
+### Prepare an interactive version of the current unstable containerised conda env
+### for development purposes n.b. source me
+
+source install_config.sh
+source functions.sh
+
+_inner() {
+
+    rm -rf "${CONDA_SCRIPT_PATH}"/"${FULLENV}".d/{bin,overrides}
+    
+    pushd "${ENV_INSTALLATION_PATH}"
+    ### Get rid of stuff from packages we don't want
+    for dir in bin lib etc libexec include; do
+	    if [[ -d "${dir}" ]]; then
+            pushd $dir
+            for i in $( rpm -qli "${rpms_to_remove[@]}" ); do
+                fn=$( basename $i )
+                [[ -f $fn ]] && rm $fn
+                [[ -d $fn ]] && rm -rf $fn
+            done
+            popd
+	    fi
+    done
+
+    ### Replace things from apps
+    for pkg in "${replace_from_apps[@]}"; do
+        for dir in bin etc lib include; do
+	        if [[ -d "${dir}" ]]; then
+                pushd $dir
+                apps_subdir=/apps/"${pkg}"/"${dir}"
+                for i in $( find "${apps_subdir}" -type f ); do
+                    fn="${i//$apps_subdir\//}"
+                    [[ -e $fn ]] && rm $fn
+                    [[ "${fn}" != "${fn%/*}" ]] && mkdir -p "${fn%/*}"
+                    ln -s "${i}" "${fn}"
+                done
+                popd
+	        fi
+        done
+    done
+    popd
+
+    ### Update any supporting infrastructure
+    copy_if_changed "${SCRIPT_DIR}"/launcher.sh "${CONDA_SCRIPT_PATH}"/launcher.sh
+    for override in "${SCRIPT_DIR}"/overrides/*; do
+        copy_if_changed "${override}" "${CONDA_SCRIPT_PATH}"/overrides/"${override##*/}"
+    done
+    copy_and_replace_if_changed "${SCRIPT_DIR}"/../modules/common_v3 "${CONDA_MODULE_PATH}"/.common_v3       CONDA_BASE APPS_SUBDIR CONDA_INSTALL_BASENAME SCRIPT_SUBDIR
+    copy_and_replace_if_changed "${SCRIPT_DIR}"/launcher_conf.sh     "${CONDA_SCRIPT_PATH}"/launcher_conf.sh CONDA_BASE APPS_SUBDIR CONDA_INSTALL_BASENAME
+
+    ### Create symlink tree
+    mkdir -p "${CONDA_SCRIPT_PATH}"/"${FULLENV}".d/{bin,overrides}
+    cp "${CONDA_SCRIPT_PATH}"/{launcher.sh,launcher_conf.sh} "${CONDA_SCRIPT_PATH}"/"${FULLENV}".d/bin
+    pushd "${CONDA_SCRIPT_PATH}"/"${FULLENV}".d/bin
+    for i in $( ls "${ENV_INSTALLATION_PATH}"/bin ); do
+        ln -s launcher.sh $i
+    done
+
+    ### Add in the outside commands
+    for i in "${outside_commands_to_include[@]}"; do
+        ln -s launcher.sh $i
+    done
+    popd
+
+    ### Add in the override and config scripts
+    pushd "${CONDA_SCRIPT_PATH}"/"${FULLENV}".d/overrides
+    for i in ../../overrides/*; do
+        ln -s ${i}
+    done
+    popd
+
+}
+
+if [[ "$#" -gt 0 ]]; then
+    if [[ "${1}" == '--inner' ]]; then
+        _inner
+        exit 0
+    fi
+fi
+
+### Stolen from Intel oneAPI
+_vars_get_proc_name() {
+    if [ -n "${ZSH_VERSION:-}" ] ; then
+        script="$(ps -p "$$" -o comm=)"
+    else
+        script="$1"
+        while [ -L "$script" ] ; do
+            script="$(readlink "$script")"
+        done
+    fi
+    basename -- "$script"
+}
+
+if [[ $BASH_SOURCE  == "$(_vars_get_proc_name "$0")" ]]; then
+    echo "This script must be sourced"
+    return 2>/dev/null || exit 1
+fi
+
+script_path=$( realpath $BASH_SOURCE )
+if [[ "${script_path::3}" == "/g/" ]]; then
+    echo "This script cannot be run from /g/data" && return
+fi
+
+if [[ ! "${PBS_JOBFS}" ]]; then
+    echo "Must be run inside a PBS job" && return
+fi
+
+_parse_jobfs() {
+    ### PBS_NCI_JOBFS var takes the form of nnnnnnXb
+    multiplier=1
+    tmp="${PBS_NCI_JOBFS:: -1}"
+    case "${tmp: -1}" in
+        ### ;& means fallthrough
+        "p")
+            #multiplier=1125899906842624
+            multiplier=$(( $multiplier * 1024 ))
+            ;&
+        "t")
+            multiplier=$(( $multiplier * 1024 ))
+            ;&
+        "g")
+            multiplier=$(( $multiplier * 1024 ))
+            ;&
+        "m")
+            multiplier=$(( $multiplier * 1024 ))
+            ;&
+        "k")
+            multiplier=$(( $multiplier * 1024 ))
+            tmp="${tmp:: -1}"
+            ;;
+    esac
+    echo $(( $multiplier * $tmp ))
+}
+
+if [[ $(( $( _parse_jobfs ) / $PBS_NNODES )) < 107374182400 ]]; then
+    echo "Minimum of 100GB/node of jobfs" && return
+fi
+
+_initialise() {
+    ### Derived temp file locations
+    export OVERLAY_BASE="${CONDA_TEMP_PATH}"/overlay
+    export CONDA_OUTER_BASE="${OVERLAY_BASE}"/"${CONDA_BASE#/*/}"
+    export ENV_INSTALLATION_PATH="${CONDA_TEMP_PATH}"/squashfs-root/opt/conda/"${FULLENV}"
+
+    ### Derived installation paths
+    export CONDA_INSTALLATION_PATH=${CONDA_INSTALLATION_PATH:-${CONDA_BASE}/./${APPS_SUBDIR}/${CONDA_INSTALL_BASENAME}}
+
+    echo "Copying base conda env"
+    mkdir -p "${CONDA_OUTER_BASE}"
+    rsync --recursive --links --perms --times --specials --partial --one-file-system --hard-links --acls --relative --exclude=*.sqsh -- "${CONDA_INSTALLATION_PATH}" "${CONDA_SCRIPT_PATH}" "${CONDA_MODULE_PATH}" "${CONDA_OUTER_BASE}"/
+
+    echo "Copying external files"
+    for f in "${outside_files_to_copy[@]}"; do
+        mkdir -p "${OVERLAY_BASE}"/$( dirname "${f#/g/}" )
+        cp "${f}" "${OVERLAY_BASE}"/"${f#/g/}"
+    done
+
+    echo "Unsquashing unstable environment"
+    pushd "${CONDA_TEMP_PATH}"
+    rm -rf squashfs-root
+    unsquashfs -processors 1 "${CONDA_INSTALLATION_PATH}/envs/${FULLENV}.sqsh"
+    popd
+    rm "${CONDA_OUTER_BASE}"/"${APPS_SUBDIR}"/"${CONDA_INSTALL_BASENAME}"/envs/"${FULLENV}"
+    ln -sf "${ENV_INSTALLATION_PATH}" "${CONDA_OUTER_BASE}"/"${APPS_SUBDIR}"/"${CONDA_INSTALL_BASENAME}"/envs/
+
+}
+
+function launch() {
+    "${SINGULARITY_BINARY_PATH}" -s exec --bind /etc,/half-root,/local,/ram,/run,/system,/usr,/var/lib/sss,/var/run/munge,/var/lib/rpm,"${OVERLAY_BASE}":/g "${CONTAINER_PATH}" bash
+}
+
+function finalise() {
+    "${SINGULARITY_BINARY_PATH}" -s exec --bind /etc,/half-root,/local,/ram,/run,/system,/usr,/var/lib/sss,/var/run/munge,/var/lib/rpm,"${OVERLAY_BASE}":/g "${CONTAINER_PATH}" bash "${script_path}" --inner
+    
+    new_squashfs=$( mktemp -u "${PBS_JOBFS}"/"${FULLENV}".XXXXXX.sqsh )
+    mksquashfs squashfs-root $new_squashfs -b 1M -no-recovery -noI -noD -noF -noX -processors 8 2>/dev/null
+    echo "Updated squashfs created at "$new_squashfs
+    pushd "${CONDA_OUTER_BASE}"
+    tar --acls -cf "${PBS_JOBFS}"/conda_base.tar "${APPS_SUBDIR}"/"${CONDA_INSTALL_BASENAME}" "${MODULE_SUBDIR}" "${SCRIPT_SUBDIR}"
+    echo "Base conda installation saved to ${PBS_JOBFS}/conda_base.tar"
+    popd
+}
+
+_initialise
+
+echo
+echo "Ready. Run 'launch' to enter containerised environment"
+echo "When you're done, exit the container and run 'finalise'"
\ No newline at end of file
diff --git a/scripts/environment.yml b/scripts/environment.yml
index a713efa..4d3f19a 100644
--- a/scripts/environment.yml
+++ b/scripts/environment.yml
@@ -277,6 +277,6 @@ dependencies:
 - bargeparse
 - accessnri::amami
 - accessnri::access-nri-intake
-- ipynbname==2023.1.0.0
+- ipynbname>2023.1.0.0
 - pip:
   - railroad-diagrams ### Unlisted dependency of pip and pyparsing
diff --git a/scripts/install_config.sh b/scripts/install_config.sh
index ddf9406..11713e3 100644
--- a/scripts/install_config.sh
+++ b/scripts/install_config.sh
@@ -34,6 +34,6 @@ export CONTAINER_PATH=$( realpath "${SCRIPT_DIR}"/../container/base.sif )
 export SINGULARITY_BINARY_PATH="/opt/singularity/bin/singularity"
 
 declare -a rpms_to_remove=( "openssh-clients" "openssh-server" "openssh" )
-declare -a replace_from_apps=( "openmpi/4.1.4" )
+declare -a replace_from_apps=( "openmpi/4.1.5" )
 declare -a outside_commands_to_include=( "pbs_tmrsh" "ssh" )
 declare -a outside_files_to_copy=( "/g/data/hh5/public/apps/nci-intake-catalogue/catalogue_new.yaml" )
\ No newline at end of file