just check MACHINE_ID is noaacloud or not shuold be enough on CSPs

ush/module-setup.sh

@@ -85,17 +85,11 @@ elif [[ $MACHINE_ID = discover* ]]; then
     export PATH=$PATH:$SPACK_ROOT/bin
     . $SPACK_ROOT/share/spack/setup-env.sh
 
+elif [[ ${MACHINE_ID} = noaacloud ]] ; then
+    # We are on NOAA Cloud
+    module purge
+
 else
-    if [[ ! -v PW_CSP ]]; then
-        echo WARNING: UNKNOWN PLATFORM 1>&2
-    elif [[ -z "${PW_CSP}" ]]; then
-        echo WARNING: UNKNOWN PLATFORM 1>&2
-    else
-        if [[ "${PW_CSP}" == "aws" || "${PW_CSP}" == "azure" || "${PW_CSP}" == "google" ]]; then
-            module purge
-        else
-            echo WARNING: UNKNOWN PLATFORM 1>&2
-        fi
-    fi
+    echo WARNING: UNKNOWN PLATFORM 1>&2
 
 fi