diff --git a/run_tests.sh b/run_tests.sh
new file mode 100644
index 0000000000..ccbc751f22
--- /dev/null
+++ b/run_tests.sh
@@ -0,0 +1,4 @@
+#!/bin/bash
+base_dir=$(dirname $(realpath $0))
+source ${base_dir}/init/eessi_defaults
+./run_in_compat_layer_env.sh ./test_suite.sh "$@"
diff --git a/test_suite.sh b/test_suite.sh
new file mode 100644
index 0000000000..fcaaa339d2
--- /dev/null
+++ b/test_suite.sh
@@ -0,0 +1,184 @@
+#!/bin/bash
+#
+# Run sanity check for all requested modules (and built dependencies)?
+# get ec from diff
+# set up EasyBuild
+# run `eb --sanity-only ec`
+
+display_help() {
+  echo "usage: $0 [OPTIONS]"
+  echo "  -g | --generic         -  instructs script to test for generic architecture target"
+  echo "  -h | --help            -  display this usage information"
+  echo "  -x | --http-proxy URL  -  provides URL for the environment variable http_proxy"
+  echo "  -y | --https-proxy URL -  provides URL for the environment variable https_proxy"
+}
+
+POSITIONAL_ARGS=()
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -g|--generic)
+      EASYBUILD_OPTARCH="GENERIC"
+      shift
+      ;;
+    -h|--help)
+      display_help  # Call your function
+      # no shifting needed here, we're done.
+      exit 0
+      ;;
+    -x|--http-proxy)
+      export http_proxy="$2"
+      shift 2
+      ;;
+    -y|--https-proxy)
+      export https_proxy="$2"
+      shift 2
+      ;;
+    --build-logs-dir)
+      export build_logs_dir="${2}"
+      shift 2
+      ;;
+    --shared-fs-path)
+      export shared_fs_path="${2}"
+      shift 2
+      ;;
+    -*|--*)
+      echo "Error: Unknown option: $1" >&2
+      exit 1
+      ;;
+    *)  # No more options
+      POSITIONAL_ARGS+=("$1") # save positional arg
+      shift
+      ;;
+  esac
+done
+
+set -- "${POSITIONAL_ARGS[@]}"
+
+TOPDIR=$(dirname $(realpath $0))
+
+source $TOPDIR/scripts/utils.sh
+
+# honor $TMPDIR if it is already defined, use /tmp otherwise
+if [ -z $TMPDIR ]; then
+    export WORKDIR=/tmp/$USER
+else
+    export WORKDIR=$TMPDIR/$USER
+fi
+
+TMPDIR=$(mktemp -d)
+
+echo ">> Setting up environment..."
+
+source $TOPDIR/init/minimal_eessi_env
+
+if [ -d $EESSI_CVMFS_REPO ]; then
+    echo_green "$EESSI_CVMFS_REPO available, OK!"
+else
+    fatal_error "$EESSI_CVMFS_REPO is not available!"
+fi
+
+# make sure we're in Prefix environment by checking $SHELL
+if [[ ${SHELL} = ${EPREFIX}/bin/bash ]]; then
+    echo_green ">> It looks like we're in a Gentoo Prefix environment, good!"
+else
+    fatal_error "Not running in Gentoo Prefix environment, run '${EPREFIX}/startprefix' first!"
+fi
+
+# avoid that pyc files for EasyBuild are stored in EasyBuild installation directory
+export PYTHONPYCACHEPREFIX=$TMPDIR/pycache
+
+DETECTION_PARAMETERS=''
+GENERIC=0
+EB='eb'
+if [[ "$EASYBUILD_OPTARCH" == "GENERIC" ]]; then
+    echo_yellow ">> GENERIC build/test requested, taking appropriate measures!"
+    DETECTION_PARAMETERS="$DETECTION_PARAMETERS --generic"
+    GENERIC=1
+    EB='eb --optarch=GENERIC'
+fi
+
+echo ">> Determining software subdirectory to use for current build/test host..."
+if [ -z $EESSI_SOFTWARE_SUBDIR_OVERRIDE ]; then
+  export EESSI_SOFTWARE_SUBDIR_OVERRIDE=$(python3 $TOPDIR/eessi_software_subdir.py $DETECTION_PARAMETERS)
+  echo ">> Determined \$EESSI_SOFTWARE_SUBDIR_OVERRIDE via 'eessi_software_subdir.py $DETECTION_PARAMETERS' script"
+else
+  echo ">> Picking up pre-defined \$EESSI_SOFTWARE_SUBDIR_OVERRIDE: ${EESSI_SOFTWARE_SUBDIR_OVERRIDE}"
+fi
+
+# Set all the EESSI environment variables (respecting $EESSI_SOFTWARE_SUBDIR_OVERRIDE)
+# $EESSI_SILENT - don't print any messages
+# $EESSI_BASIC_ENV - give a basic set of environment variables
+EESSI_SILENT=1 EESSI_BASIC_ENV=1 source $TOPDIR/init/eessi_environment_variables
+
+if [[ -z ${EESSI_SOFTWARE_SUBDIR} ]]; then
+    fatal_error "Failed to determine software subdirectory?!"
+elif [[ "${EESSI_SOFTWARE_SUBDIR}" != "${EESSI_SOFTWARE_SUBDIR_OVERRIDE}" ]]; then
+    fatal_error "Values for EESSI_SOFTWARE_SUBDIR_OVERRIDE (${EESSI_SOFTWARE_SUBDIR_OVERRIDE}) and EESSI_SOFTWARE_SUBDIR (${EESSI_SOFTWARE_SUBDIR}) differ!"
+else
+    echo_green ">> Using ${EESSI_SOFTWARE_SUBDIR} as software subdirectory!"
+fi
+
+echo ">> Initializing Lmod..."
+source $EPREFIX/usr/share/Lmod/init/bash
+ml_version_out=$TMPDIR/ml.out
+ml --version &> $ml_version_out
+if [[ $? -eq 0 ]]; then
+    echo_green ">> Found Lmod ${LMOD_VERSION}"
+else
+    fatal_error "Failed to initialize Lmod?! (see output in ${ml_version_out}"
+fi
+
+echo ">> Configuring EasyBuild..."
+source $TOPDIR/configure_easybuild
+
+echo ">> Setting up \$MODULEPATH..."
+# make sure no modules are loaded
+module --force purge
+# ignore current $MODULEPATH entirely
+module unuse $MODULEPATH
+module use $EASYBUILD_INSTALLPATH/modules/all
+if [[ -z ${MODULEPATH} ]]; then
+    fatal_error "Failed to set up \$MODULEPATH?!"
+else
+    echo_green ">> MODULEPATH set up: ${MODULEPATH}"
+fi
+
+# assume there's only one diff file that corresponds to the PR patch file
+pr_diff=$(ls [0-9]*.diff | head -1)
+
+# "split" the file by prefixing each line belonging to the same file with the
+# same number
+split_file=$(awk '/^\+\+\+/{n++}{print n, "  ", $0 }' ${pr_diff})
+
+# determine which easystack files may have changed
+changed_es_files=$(echo "${split_file}" | grep '^[0-9 ]*+++ ./eessi.*.yml$' | egrep -v 'known-issues|missing')
+
+# process all changed easystackfiles
+for es_file_num in $(echo "${changed_es_files}" | cut -f1 -d' ')
+do
+    # determine added lines that do not contain a yaml comment only
+    added_lines=$(echo "${split_file}" | grep "${es_file_num}    + " | sed -e "s/^"${es_file_num}"    + //" | grep -v "^[ ]*#")
+    # determine easyconfigs
+    easyconfigs=$(echo "${added_lines}" | cut -f3 -d' ')
+    # get easystack file name
+    easystack_file=$(echo "${changed_es_files}" | grep "^${es_file_num}" | sed -e "s/^"${es_file_num}"    ... .\///")
+    echo -e "Processing easystack file ${easystack_file}...\n\n"
+
+    # determine version of EasyBuild module to load based on EasyBuild version included in name of easystack file
+    eb_version=$(echo ${easystack_file} | sed 's/.*eb-\([0-9.]*\).*/\1/g')
+
+    # load EasyBuild module
+    module load EasyBuild/${eb_version}
+
+    echo_green "All set, let's run sanity checks for installed packages..."
+
+    for easyconfig in ${easyconfigs};
+    do
+        echo "Running sanity check for '${easyconfig}'..."
+        eb --sanity-check-only ${easyconfig}
+    done
+done
+
+echo ">> Cleaning up ${TMPDIR}..."
+rm -r ${TMPDIR}