diff --git a/scripts/environment.sh b/scripts/environment.sh
index ae5b139..263271b 100644
--- a/scripts/environment.sh
+++ b/scripts/environment.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+export LMOD_SH_DBG_ON=1
 # Set up the runtime environment by sourcing the environmentXXX.sh scripts in
 # the same directory as this script.
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
diff --git a/scripts/environment_redhat.sh b/scripts/environment_redhat.sh
index 7d1be70..d05af80 100644
--- a/scripts/environment_redhat.sh
+++ b/scripts/environment_redhat.sh
@@ -4,6 +4,7 @@
 # ---
 # This is working around GitHub Actions running commands in non-login shells
 # that would otherwise not have the `module` command available.
+export LMOD_SH_DBG_ON=1
 source /etc/profile.d/modules.sh
 # ---
 # --- End GitHub-Actions-specific code ---
diff --git a/scripts/environment_redhat_fedora_latest.sh b/scripts/environment_redhat_fedora_latest.sh
index 193fac9..f03edb8 100644
--- a/scripts/environment_redhat_fedora_latest.sh
+++ b/scripts/environment_redhat_fedora_latest.sh
@@ -1,3 +1,4 @@
 # Inspired by https://github.com/open-mpi/ompi/issues/11295 to try and
 # avoid hangs when running MPI tests.
 export FI_PROVIDER="tcp"
+export LMOD_SH_DBG_ON=1
diff --git a/wrappers/runUnprivileged.sh b/wrappers/runUnprivileged.sh
index 254106c..741249d 100755
--- a/wrappers/runUnprivileged.sh
+++ b/wrappers/runUnprivileged.sh
@@ -1,5 +1,6 @@
 #!/bin/bash
 set -x
+export LMOD_SH_DBG_ON=1
 if [ -n "${OS_CONTAINER}" ]
 then
   # We are running under Docker