diff --git a/rpm/nsd-app-wrap.spec b/rpm/nsd-app-wrap.spec
index 7b731fa0e911d416a255b2a789a3bfe072147423..40219da3b349fc4e6c3aa2a45fbaeca5a48907b9 100644
--- a/rpm/nsd-app-wrap.spec
+++ b/rpm/nsd-app-wrap.spec
@@ -1,5 +1,5 @@
 Name:           nsd-app-wrap
-Version:        2.6
+Version:        2.7
 Release:        1%{?dist}
 Summary:        Wrapper scripts to launch python applications installed via anaconda
 Vendor:         Peter F. Peterson
diff --git a/src/addie b/src/addie
index 496a9c25c0a5962da8a988df3f70b8683164fae5..ba8b45967c3f9b506f1137141a24faa9fd20346b 100644
--- a/src/addie
+++ b/src/addie
@@ -5,18 +5,18 @@
 unset SESSION_MANAGER
 
 # select the environment to use
-CONDA_ENVIRON=addie
+PIXI_ENVIRON=addie
 # If `dev` or `qa` version requested, default to `--mode=mantid`.
 mode_arg=""
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=addie-dev
+    PIXI_ENVIRON=addie_dev
     shift # drop this argument
     if [ -z "$1" ]; then
       mode_arg="--mode=mantid"
     fi
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=addie-qa
+    PIXI_ENVIRON=addie_qa
     shift # drop this argument
     if [ -z "$1" ]; then
       mode_arg="--mode=mantid"
@@ -31,9 +31,9 @@ fi
 
 # put together arguments - conda_env, application, argv
 if [ -n "${mode_arg}" ]; then
-  args=("${CONDA_ENVIRON}" "addie" "${mode_arg}" "${@}")
+  args=("${PIXI_ENVIRON}" "start_gui" "${mode_arg}" "${@}")
 else
-  args=("${CONDA_ENVIRON}" "addie" "${@}")
+  args=("${PIXI_ENVIRON}" "start_gui" "${@}")
 fi
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/drtsans b/src/drtsans
index 63000e475e9d76dbdda1ebc4ff55c7c82072b026..d3a0acf9d5ae7d3d61505d5a28d4d35c4d4e34d0 100644
--- a/src/drtsans
+++ b/src/drtsans
@@ -1,13 +1,13 @@
 #!/bin/bash
 
 # select the environment to use
-CONDA_ENVIRON=sans
+PIXI_ENVIRON=sans
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=sans-dev
+    PIXI_ENVIRON=sans_dev
     shift  # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=sans-qa
+    PIXI_ENVIRON=sans_qa
     shift  # drop this argument
   fi
 fi
@@ -20,9 +20,10 @@ if [ -n "$1" ] && [ "$1" == "--classic" ]; then
 fi
 
 # import library to do the real work
-. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh"
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
 
 # put together arguments - conda_env, application, argv
-args=("${CONDA_ENVIRON}" "${STARTUP}" "$@")
+args=("${PIXI_ENVIRON}" "${STARTUP}" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/gsas2 b/src/gsas2
index 5c7690834d3ff1bd7689ceb1eae1182c1a1bc650..729d7e598c3df3b46efddf05fb9210defe8d3ac4 100644
--- a/src/gsas2
+++ b/src/gsas2
@@ -1,13 +1,14 @@
 #!/bin/sh
 
 # select the environment to use
-CONDA_ENVIRON=gsas2
+PIXI_ENVIRON=gsas2
 
 # import library to do the real work
-. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh"
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
 
-# activate the environment - will be deactivated on exit
-activate_conda_environment "${CONDA_ENVIRON}"
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
 
-# start the application
-python "${CONDA_PREFIX}/GSASII/GSASII.py"
diff --git a/src/hyspecppt b/src/hyspecppt
index ed2574e98fd56688f6d4cf69d7c684610e1c0307..25d718150a3c7f4aa67649dd5caf13a73677f438 100644
--- a/src/hyspecppt
+++ b/src/hyspecppt
@@ -2,13 +2,13 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=hyspecppt
+PIXI_ENVIRON=hyspecppt
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=hyspecppt-dev
+    PIXI_ENVIRON=hyspecppt_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=hyspecppt-qa
+    PIXI_ENVIRON=hyspecppt_qa
     shift # drop this argument
   fi
 fi
@@ -17,7 +17,8 @@ fi
 # shellcheck disable=SC1091
 . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
   || . /bin/nsd-app-wrap.sh
+
 # put together arguments - conda_env, application, argv
-args=("${CONDA_ENVIRON}" "hyspecppt" "$@")
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/ibeatles b/src/ibeatles
index bbceb52d5d04b2f0ca32990d99196beb519d79ad..3f07b20a1d70b8884cd735c591ac8066bb47d03a 100644
--- a/src/ibeatles
+++ b/src/ibeatles
@@ -1,2 +1,16 @@
 #!/bin/bash
-/opt/anaconda/envs/ibeatles/bin/python -m ibeatles "$@"
+
+# select the environment to use
+# current default is system version
+PIXI_ENVIRON=ibeatles
+
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
+
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
+
diff --git a/src/inspired b/src/inspired
index 5f74374d469932cb8487442a77205e030ac73f88..6fc766016d8fd3711f6800c94b51a270857aaa60 100644
--- a/src/inspired
+++ b/src/inspired
@@ -2,26 +2,23 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=inspired
+PIXI_ENVIRON=inspired
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=inspired-dev
+    PIXI_ENVIRON=inspired_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=inspired-qa
+    PIXI_ENVIRON=inspired_qa
     shift # drop this argument
   fi
 fi
 
-if [ -v CONDA_ENVIRON ]; then
-  # import library to do the real work
-  # shellcheck disable=SC1091
-  . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-    . /bin/nsd-app-wrap.sh
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+  . /bin/nsd-app-wrap.sh
 
-  # activate the environment - will be deactivated on exit
-  activate_conda_environment "${CONDA_ENVIRON}"
-fi
-
-# start the application
-OMP_NUM_THREADS=1 inspired
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/licorne b/src/licorne
index 67a465f54806480ad017f9a483e0eb2d595dfbe7..1a1e9a36a31e4605f075be9e2adcbeeca0c1980e 100644
--- a/src/licorne
+++ b/src/licorne
@@ -2,18 +2,14 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=licorne
+PIXI_ENVIRON=licorne
 
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    # shellcheck disable=SC1091
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-        . /bin/nsd-app-wrap.sh
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+    . /bin/nsd-app-wrap.sh
 
-    # put together arguments - conda_env, application, argv
-    #args=("${CONDA_ENVIRON}" "pyrsplot" "$@")
-    args=("${CONDA_ENVIRON}" "licorne" "$@")
-
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/mantidpythonnightly b/src/mantidpythonnightly
index ab7ebe2c7052f48b69bc45c1cdf8e059831fe151..d00210e5b02890aade809a25177ce6362951cbc6 100644
--- a/src/mantidpythonnightly
+++ b/src/mantidpythonnightly
@@ -1,2 +1,2 @@
 #!/bin/bash
-"$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" mantid-dev "$@"
+"$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" mantid_dev "$@"
diff --git a/src/mantidpythonqa b/src/mantidpythonqa
index 153c18fcbb0a7a4287a14dfc07d9af35306d873c..89056312fc020747df3cbbd8625ea23220e39141 100644
--- a/src/mantidpythonqa
+++ b/src/mantidpythonqa
@@ -1,2 +1,2 @@
 #!/bin/bash
-"$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" mantid-qa "$@"
+"$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" mantid_qa "$@"
diff --git a/src/mantidtotalscattering b/src/mantidtotalscattering
index 295536d11853c1f07d7c1276a4b4bdc3ae622da9..450994668d03225abc03bf9daf7e1c4e45d6578d 100644
--- a/src/mantidtotalscattering
+++ b/src/mantidtotalscattering
@@ -1,13 +1,13 @@
 #!/bin/bash
 
 # select the environment to use
-CONDA_ENVIRON=mantidtotalscattering
+PIXI_ENVIRON=mantidtotalscattering
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=mantidtotalscattering-dev
+    PIXI_ENVIRON=mantidtotalscattering_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=mantidtotalscattering-qa
+    PIXI_ENVIRON=mantidtotalscattering_qa
     shift
   fi
 fi
@@ -17,9 +17,7 @@ fi
 . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
   . /bin/nsd-app-wrap.sh
 
-# activate the environment - will be deactivated on exit
-activate_conda_environment "${CONDA_ENVIRON}"
-
-# start the application
-echo "$@"
-mantidtotalscattering "$@"
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/mantidworkbench b/src/mantidworkbench
index 217a0345b3d378e2d0b9fac33c7d6b923040747a..aa719f6302b061e2a5f38ca95b0ccc7fab472c7e 100644
--- a/src/mantidworkbench
+++ b/src/mantidworkbench
@@ -8,21 +8,24 @@
 for var in "$@"; do
 	case "$var" in
 	--env=*)
-		CONDA_ENV=$(echo "${var}" | awk -F"=" '{print $2}')
+		PIXI_ENV=$(echo "${var}" | awk -F"=" '{print $2}')
+		PIXI_TASK="start_mantid"
 		shift 1 # remove this argument
 		;;
 	--env)
-		CONDA_ENV="$2" # look ahead by one
-		shift 2        # remove the flag and value
+		PIXI_ENV="$2" # look ahead by one
+		PIXI_TASK="start_mantid"
+                shift 2        # remove the flag and value
 		;;
 	esac
 done
 # default conda environment if it was not specified
-if [ -z "${CONDA_ENV}" ]; then
-	CONDA_ENV="mantid"
+if [ -z "${PIXI_ENV}" ]; then
+	PIXI_ENV="mantid"
+	PIXI_TASK="start_gui"
 fi
 
 # put together arguments - conda_env, application, argv
-args=("${CONDA_ENV}" "/opt/anaconda/envs/${CONDA_ENV}/bin/mantidworkbench" "$@")
+args=("${PIXI_ENV}" "${PIXI_TASK}" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/mantidworkbenchnightly b/src/mantidworkbenchnightly
index 3e261d2cb4b9bcb1024f6c4b978eee1dd1d492f4..6eb4827cd73531c8e67ad7f7f0279c857ececb38 100644
--- a/src/mantidworkbenchnightly
+++ b/src/mantidworkbenchnightly
@@ -5,7 +5,7 @@
     . /bin/nsd-app-wrap.sh
 
 # put together arguments - conda_env, application, argv
-CONDA_ENV="mantid-dev"
-args=("${CONDA_ENV}" "/opt/anaconda/envs/${CONDA_ENV}/bin/mantidworkbench" "$@")
+PIXI_ENV="mantid_dev"
+args=("${PIXI_ENV}" "start_gui" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/mantidworkbenchqa b/src/mantidworkbenchqa
index e6d2a998654ebff4f7b45d8dc961424c42512a4d..c51b591f3c9cb407ac25edbe42a110aaf26f869a 100644
--- a/src/mantidworkbenchqa
+++ b/src/mantidworkbenchqa
@@ -5,7 +5,7 @@
     . /bin/nsd-app-wrap.sh
 
 # put together arguments - conda_env, application, argv
-CONDA_ENV="mantid-qa"
-args=("${CONDA_ENV}" "/opt/anaconda/envs/${CONDA_ENV}/bin/mantidworkbench" "$@")
+PIXI_ENV="mantid_qa"
+args=("${PIXI_ENV}" "start_gui" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/mpdf b/src/mpdf
index 7e5f7386ba6a68e862a7583b51083eefd25db02d..3b57701d5694c485f67703e198b543b4bfc4a18a 100755
--- a/src/mpdf
+++ b/src/mpdf
@@ -2,7 +2,7 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=mpdf
-if [ -v CONDA_ENVIRON ]; then
-    "$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" "$CONDA_ENVIRON" "$@"
+PIXI_ENVIRON=mpdf
+if [ -v PIXI_ENVIRON ]; then
+    "$(dirname "$(realpath "$0")")/nsd-conda-wrap.sh" "$PIXI_ENVIRON" "$@"
 fi
diff --git a/src/nr_launcher b/src/nr_launcher
index a21a2e43e5b1aed38d0014b40257efbebda0b057..a5fabf3bc4815827a4a469c0f1cc3cff47ebd2bb 100644
--- a/src/nr_launcher
+++ b/src/nr_launcher
@@ -1,22 +1,2 @@
 #!/bin/bash
-
-# select the environment to use
-CONDA_ENVIRON=refl1d
-
-# check if the conda environment exists
-if ! conda env list | \grep -q "^${CONDA_ENVIRON}[[:space:]]"; then
-    CONDA_ENVIRON=refl1d-qa
-fi
-
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    # shellcheck disable=SC1091
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-        . /bin/nsd-app-wrap.sh
-
-    # put together arguments - conda_env, application, location, arguments passed to this script
-    args=("${CONDA_ENVIRON}" "source" "/SNS/REF_L/shared/launcher/nsd_app_wrap_nr_launcher.sh" "$@")
-
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+cd /SNS/REF_L/shared/launcher; python launcher.py
diff --git a/src/nseplot b/src/nseplot
index 7bd83afbcdc565d1a41662cee1296feba99ecfce..e29dbb142b259bfb6c9db9091c355ef95824d04d 100755
--- a/src/nseplot
+++ b/src/nseplot
@@ -2,16 +2,14 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=pysen
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    # shellcheck disable=SC1091
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-        . /bin/nsd-app-wrap.sh
+PIXI_ENVIRON=pysen
 
-    # put together arguments - conda_env, application, argv
-    args=("${CONDA_ENVIRON}" "nseplot" "$@")
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+    . /bin/nsd-app-wrap.sh
 
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "nseplot" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/paraview b/src/paraview
index eaacc4bdb1470aba0f533788a34e2209623fdb8e..40ae384a988b8aaf8d2ad2b23a211cccf0314513 100644
--- a/src/paraview
+++ b/src/paraview
@@ -2,15 +2,13 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=paraview
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
-      || . /bin/nsd-app-wrap.sh
+PIXI_ENVIRON=paraview
+# import library to do the real work
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+   || . /bin/nsd-app-wrap.sh
 
-    # put together arguments - conda_env, application, argv
-    args=("${CONDA_ENVIRON}" "paraview" "$@")
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "paraview" "$@")
 
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+# start the application
+pixi_launch "${args[@]}"
diff --git a/src/pdfgui2 b/src/pdfgui2
index 1788bfb0a5c2c70cf40a6104ffe18b26fcc26a63..a9c248dcc16ed9bfa3279009e962f6cc548c4e57 100644
--- a/src/pdfgui2
+++ b/src/pdfgui2
@@ -2,16 +2,14 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=pdfgui2
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    # shellcheck disable=SC1091
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-        . /bin/nsd-app-wrap.sh
+PIXI_ENVIRON=pdfgui
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+    . /bin/nsd-app-wrap.sh
 
-    # put together arguments - conda_env, application, argv
-    args=("${CONDA_ENVIRON}" "pdfgui" "$@")
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
 
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+# start the application
+pixi_launch "${args[@]}"
diff --git a/src/pyrs b/src/pyrs
index 9fa8e3263e355271ac2abebb718cc64e860883d9..56f116eed6f7a9ea3f16c7be7c01783ab2af336f 100644
--- a/src/pyrs
+++ b/src/pyrs
@@ -2,26 +2,24 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=pyrs
+PIXI_ENVIRON=pyrs
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=pyrs-dev
+    PIXI_ENVIRON=pyrsi_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=pyrs-qa
+    PIXI_ENVIRON=pyrs_qa
     shift # drop this argument
   fi
 fi
 
-if [ -v CONDA_ENVIRON ]; then
-  # import library to do the real work
-  # shellcheck disable=SC1091
-  . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-    . /bin/nsd-app-wrap.sh
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+  . /bin/nsd-app-wrap.sh
 
-  # put together arguments - conda_env, application, argv
-  args=("${CONDA_ENVIRON}" "pyrsplot" "$@")
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "pyrsplot" "$@")
 
-  # start the application
-  activate_and_launch "${args[@]}"
-fi
+# start the application
+pixi_launch "${args[@]}"
diff --git a/src/refl1d b/src/refl1d
index 0ab392e22a258e4e643bc6ce3051b0b091818387..463190011adaaca68380b35a869f33abd2a62a63 100644
--- a/src/refl1d
+++ b/src/refl1d
@@ -7,31 +7,23 @@ unset SESSION_MANAGER
 COMMAND="refl1d" # --port XXXX
 
 # select the environment to use
-CONDA_ENVIRON=refl1d-qa
+PIXI_ENVIRON=refl1d_qa
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=refl1d-dev
+    PIXI_ENVIRON=refl1d_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=refl1d-qa
+    PIXI_ENVIRON=refl1d_qa
     shift # drop this argument
   fi
 fi
 
-if [ -v CONDA_ENVIRON ]; then
-  # import library to do the real work
-  # shellcheck disable=SC1091
-  . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-    . /bin/nsd-app-wrap.sh # Resolves to /bin/nsd-app-wrap.sh ?
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+  . /bin/nsd-app-wrap.sh # Resolves to /bin/nsd-app-wrap.sh ?
 
-  # override the normal call to activate_and_launch() function
-  activate_conda_environment "${CONDA_ENVIRON}"
-
-  # remove and rebuild the font cache
-  _remove_font_cache
-  fc-cache -r
-
-  # start the application
-  echo "Execute: ${COMMAND} $*"
-  "${COMMAND}" "$@"
-fi
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/refred b/src/refred
index f8229027dd432c70177d4c10f302d84a7132ad31..f188dced09e06a9e9679611b6ed904c4351f25b4 100644
--- a/src/refred
+++ b/src/refred
@@ -1,13 +1,13 @@
 #!/bin/bash
 
 # select the environment to use
-CONDA_ENVIRON=refred
+PIXI_ENVIRON=refred
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=refred-dev
+    PIXI_ENVIRON=refred_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=refred-qa
+    PIXI_ENVIRON=refred_qa
     shift # drop this argument
   fi
 fi
@@ -18,7 +18,6 @@ fi
   . /bin/nsd-app-wrap.sh
 
 # put together arguments - conda_env, application, argv
-args=("${CONDA_ENVIRON}" "refred-gui" "$@")
-
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/sasview b/src/sasview
index ae12414ab72492ab9fedead9738284d4f0afac0a..9d85dca8c8975260d605b357f5e8ddc3e65bfe16 100644
--- a/src/sasview
+++ b/src/sasview
@@ -2,16 +2,14 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=sasview
-if [ -v CONDA_ENVIRON ]; then
-    # import library to do the real work
-    # shellcheck disable=SC1091
-    . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-        . /bin/nsd-app-wrap.sh
+PIXI_ENVIRON=sasview
 
-    # put together arguments - conda_env, application, argv
-    args=("${CONDA_ENVIRON}" "sasview" "$@")
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
+    . /bin/nsd-app-wrap.sh
 
-    # start the application
-    activate_and_launch "${args[@]}"
-fi
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/shiver b/src/shiver
index 1fef813480d21ef6d995209d42b78a2de4a8b4bc..31778001e77a71b346df9660239e5645ff30754b 100644
--- a/src/shiver
+++ b/src/shiver
@@ -1,13 +1,13 @@
 #!/bin/bash
 
 # select the environment to use
-CONDA_ENVIRON=shiver
+PIXI_ENVIRON=shiver
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=shiver-dev
+    PIXI_ENVIRON=shiver_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=shiver-qa
+    PIXI_ENVIRON=shiver_qa
     shift # drop this argument
   fi
 fi
@@ -18,6 +18,6 @@ fi
   . /bin/nsd-app-wrap.sh
 
 # put together arguments - conda_env, application, argv
-args=("${CONDA_ENVIRON}" "shiver" "$@")
+args=("${PIXI_ENVIRON}" "start_gui" "$@")
 # launch the tool
-activate_and_launch "${args[@]}"
+pixi_launch "${args[@]}"
diff --git a/src/snapwrap b/src/snapwrap
index 02eebccf6e3cad6b6be68c2eca67005e31765c28..1f1a55ee3e602cb7bac1ad391e90a5383b18fdc1 100644
--- a/src/snapwrap
+++ b/src/snapwrap
@@ -2,26 +2,23 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=snapwrap
+PIXI_ENVIRON=snapwrap
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=snapwrap-dev
+    PIXI_ENVIRON=snapwrap_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=snapwrap-qa
+    PIXI_ENVIRON=snapwrap_qa
     shift # drop this argument
   fi
 fi
 
-if [ -v CONDA_ENVIRON ]; then
-  # import library to do the real work
-  # shellcheck disable=SC1091
-  . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-    . /bin/nsd-app-wrap.sh
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
 
-  # activate the environment - will be deactivated on exit
-  activate_conda_environment "${CONDA_ENVIRON}"
-fi
-
-# start the application
-python -m workbench
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "python -m workbench" "$@")
+# launch the tool
+pixi_launch "${args[@]}"
diff --git a/src/usansred b/src/usansred
index 920f576503c161b25460121fedf40229a255c424..4ff74761b6f0a3add79d8d123b35e6992b4c72fb 100644
--- a/src/usansred
+++ b/src/usansred
@@ -2,24 +2,24 @@
 
 # select the environment to use
 # current default is system version
-CONDA_ENVIRON=usansred
+PIXI_ENVIRON=usansred
 if [ -n "$1" ]; then
   if [ "$1" == "--dev" ]; then
-    CONDA_ENVIRON=usansred-dev
+    PIXI_ENVIRON=usansred_dev
     shift # drop this argument
   elif [ "$1" == "--qa" ]; then
-    CONDA_ENVIRON=usansred-qa
+    PIXI_ENVIRON=usansred_qa
     shift # drop this argument
   fi
 fi
 
-if [ -v CONDA_ENVIRON ]; then
-  # import library to do the real work
-  # shellcheck disable=SC1091
-  . "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" ||
-    . /bin/nsd-app-wrap.sh
-  # activate the environment - will be deactivated on exit
-  activate_conda_environment "${CONDA_ENVIRON}"
-fi
+# import library to do the real work
+# shellcheck disable=SC1091
+. "$(dirname "$(realpath "$0")")/nsd-app-wrap.sh" \
+  || . /bin/nsd-app-wrap.sh
+
+# put together arguments - conda_env, application, argv
+args=("${PIXI_ENVIRON}" "python" "$@")
 
-# (there is no default appliation to launch)
+# launch the tool
+pixi_launch "${args[@]}"