bootstrap:

- add options to overwrite installation root and config file

install_pmodules.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 declare    BOOTSTRAP_DIR=$(dirname "$0")
 
+unset PMODULES_ROOT
 unset PMODULES_HOME
 unset PMODULES_VERSION
 
@@ -9,30 +10,43 @@ source "${BOOTSTRAP_DIR}/Pmodules/libstd.bash"
 declare -r BOOTSTRAP_DIR=$(std::get_abspath "${BOOTSTRAP_DIR}")
 declare -r SRC_DIR="${BOOTSTRAP_DIR}/Pmodules"
 
-std::read_versions "${BOOTSTRAP_DIR}/config/versions.conf"
+declare config_file="${BOOTSTRAP_DIR}/config/environment.bash"
+
+declare opt_force='no'
 
 while (( $# > 0 )); do
 	case $1 in
-	--install-root )
-		PMODULES_ROOT="$2"
-		shift 1
-		;;
-	--install-root=* )
-		PMODULES_ROOT="${1#*=}"
-		;;
-	-* )
-		echo "Unknown option: $1" 1>&2
-		exit 1
-		;;
-	* )
-		echo "Invalid argument: $1" 1>&2
-		exit 1
-		;;
+		--config )
+			config_file="$2"
+			shift 1
+			;;
+		--config=* )
+			config_file="${1#*=}"
+			;;
+		--install-root )
+			PMODULES_ROOT="$2"
+			shift 1
+			;;
+		--install-root=* )
+			PMODULES_ROOT="${1#*=}"
+			;;
+		-f | --force )
+			opt_force='yes'
+			;;
+		-* )
+			echo "Unknown option: $1" 1>&2
+			exit 1
+			;;
+		* )
+			echo "Invalid argument: $1" 1>&2
+			exit 1
+			;;
 	esac
 	shift 1
 done
 
-source "${BOOTSTRAP_DIR}/config/environment.bash"
+std::read_versions "${BOOTSTRAP_DIR}/config/versions.conf"
+source "${config_file}"
 
 if [[ ! -d "${PMODULES_ROOT}" ]]; then
 	read -p "The requested root directory does not exist. Create it? [y|N] " -n 1 ans