dd option to use the package cache of the system being installed

bin/manjaro-architect.in

@@ -44,4 +44,9 @@ set_language
 mk_connection
 check_connection
 #greeting
+if [[ -e /run/miso/bootmnt ]]; then
+	hostcache=true
+else
+	hostcache=false
+fi
 main_menu

lib/util-advanced.sh

@@ -52,7 +52,11 @@ install_cust_pkgs() {
     clear
     # If at least one package, install.
     if [[ $(cat ${PACKAGES}) != "" ]]; then
-            basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            if $hostcache; then
+              basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            else
+              basestrap -c ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            fi
             check_for_error "$FUNCNAME $(cat ${PACKAGES})" "$?"
     fi
 }
@@ -205,7 +209,11 @@ install_de_wm() {
     if [[ $(cat ${PACKAGES}) != "" ]]; then
         clear
         sed -i 's/+\|\"//g' ${PACKAGES}
-        basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+        if $hostcache; then
+          basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+        else
+          basestrap -c ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+        fi
         check_for_error "${FUNCNAME}: ${PACKAGES}" "$?"
 
         # Clear the packages file for installation of "common" packages
@@ -233,7 +241,12 @@ install_de_wm() {
         # If at least one package, install.
         if [[ $(cat ${PACKAGES}) != "" ]]; then
             clear
-            basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            
+            if $hostcache; then
+              basestrap ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            else
+              basestrap -c ${MOUNTPOINT} $(cat ${PACKAGES}) 2>$ERR
+            fi
             check_for_error "basestrap ${MOUNTPOINT} $(cat ${PACKAGES})" "$?"
         fi
     fi

lib/util-desktop.sh

@@ -120,7 +120,11 @@ install_all_drivers() {
             echo "" >> /tmp/.all_drivers
     done
     sed -i '/KERNEL-/d' /tmp/.all_drivers
-    basestrap ${MOUNTPOINT} $(cat /tmp/.all_drivers)
+    if $hostcache; then
+        basestrap ${MOUNTPOINT} $(cat /tmp/.all_drivers)
+    else
+        basestrap -c ${MOUNTPOINT} $(cat /tmp/.all_drivers)
+    fi
 }
 install_ati() {
     sed -i 's/MODULES=""/MODULES="radeon"/' ${MOUNTPOINT}/etc/mkinitcpio.conf
@@ -188,7 +192,11 @@ install_manjaro_de_wm() {
         check_for_error "packages to install: $(grep -vf /mnt/.base /mnt/.desktop | sort | tr '\n' ' ')"
         clear
         set -o pipefail
-        basestrap ${MOUNTPOINT} $(cat /mnt/.desktop) 2>$ERR |& tee /tmp/basestrap.log
+        if $hostcache; then
+            basestrap ${MOUNTPOINT} $(cat /mnt/.desktop) 2>$ERR |& tee /tmp/basestrap.log
+        else 
+            basestrap -c ${MOUNTPOINT} $(cat /mnt/.desktop) 2>$ERR |& tee /tmp/basestrap.log
+        fi
         local err=$?
         set +o pipefail
         check_for_error "install desktop-pkgs" $err || return $err
@@ -301,7 +309,12 @@ install_desktop() {
     check_for_error "packages to install: $(cat /mnt/.base | sort | tr '\n' ' ')"
     clear
     set -o pipefail
-    basestrap ${MOUNTPOINT} $(cat /mnt/.base) 2>$ERR |& tee /tmp/basestrap.log
+    if $hostcache; then
+        basestrap ${MOUNTPOINT} $(cat /mnt/.base) 2>$ERR |& tee /tmp/basestrap.log
+    else
+        basestrap -c ${MOUNTPOINT} $(cat /mnt/.base) 2>$ERR |& tee /tmp/basestrap.log
+    fi
+    
     local err=$?
     set +o pipefail
     check_for_error "install basepkgs" $err || {

lib/util-menu.sh

@@ -233,7 +233,8 @@ prep_menu() {
           "6" "$_PrepMntPart" \
           "7" "$_PrepMirror|>" \
           "8" "$_PrepPacKey" \
-          "9" "$_Back" 2>${ANSWER}
+          "9" "$_HostCache" \
+          "10" "$_Back" 2>${ANSWER}
         HIGHLIGHT_SUB=$(cat ${ANSWER})
 
         case $(cat ${ANSWER}) in
@@ -264,6 +265,8 @@ prep_menu() {
                     check_for_error 'refresh pacman-keys'
                   )
                  ;;
+            "9") set_cache
+                 ;;
             *) loopmenu=0
                 return 0
                  ;;
@@ -271,6 +274,17 @@ prep_menu() {
     done
 }
 
+set_cache()
+{
+  _HostCache="Choose pacman cache"
+  _HostCacheBody="Do you want to use the pacman cache of the running system instead of the installation target? This can reduce the size of the required downloads in the installation."
+  DIALOG " $_HostCache " --yesno "\n$_HostCacheBody\n " 0 0
+  if [[ $? -eq 0 ]]; then
+    hostcache=true
+  else
+    hostcache=false
+  fi
+}
 # Base Installation
 install_base_menu() {
     local PARENT="$FUNCNAME"