Attempt to improve set -x output

Author: j-woz

dev/conda/conda-install.sh

@@ -125,7 +125,14 @@ if (( USE_R )) {
 # Run conda install!
 CONDA_FLAGS=( --yes --quiet $SOLVER )
 # For set -x:
-PS4="%1N"
+PS4="%1N: "
+set -x
+if (( INSTALL_DEPS )) {
+     () {
+       set -x
+       conda install $CONDA_FLAGS -c conda-forge $LIST
+     }
+}
+
 set -x
-if (( INSTALL_DEPS )) conda install $CONDA_FLAGS -c conda-forge $LIST
 conda install $CONDA_FLAGS $PKG