diff --git a/rpm/nsd-app-wrap.spec b/rpm/nsd-app-wrap.spec
index c330d0d30039b0877dc2c7a87641ea494ac271d2..0fdc29906f8a2c216ef33d84ab923ae93b22dfab 100644
--- a/rpm/nsd-app-wrap.spec
+++ b/rpm/nsd-app-wrap.spec
@@ -1,5 +1,5 @@
 Name:           nsd-app-wrap
-Version:        2.17
+Version:        2.18
 Release:        1%{?dist}
 Summary:        Wrapper scripts to launch python applications installed via anaconda
 Vendor:         Peter F. Peterson
@@ -42,6 +42,7 @@ install -m 755 mantidpython                           %{buildroot}%{_bindir}/
 install -m 755 mantidworkbench                        %{buildroot}%{_bindir}/
 install -m 755 mantidtotalscattering                  %{buildroot}%{_bindir}/
 install -m 755 mcstas                                 %{buildroot}%{_bindir}/
+install -m 755 nexpy                                  %{buildroot}%{_bindir}/
 # not used right now - things that look like scriptlets cannot be in comments
 #install -m 755 neutron-imaging                        {buildroot}{_bindir}/
 install -m 755 nr_launcher                            %{buildroot}%{_bindir}/
diff --git a/src/nr_launcher b/src/nr_launcher
old mode 100644
new mode 100755
index a5fabf3bc4815827a4a469c0f1cc3cff47ebd2bb..15785c96ebb12bb5bf17edab043a555cffe9bb61
--- a/src/nr_launcher
+++ b/src/nr_launcher
@@ -1,2 +1,12 @@
 #!/bin/bash
-cd /SNS/REF_L/shared/launcher; python launcher.py
+
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
+
+
+# put together arguments - conda_env, application, argv
+args=("refl1d" "python /SNS/REF_L/shared/launcher/launcher.py" "$@")
+# launch the tool
+pixi_launch "${args[@]}"