PKGBUILD: sourcing order fix (#653)

* PKGBUILD: source prepare after the config files

The git mirror wasn't configured with the user choice otherwise
Fixes: #647

* install.sh: honor external config file

PKGBUILD

@@ -31,7 +31,6 @@ _distro="Arch"
 declare -p -x > current_env
 
 source "$_where"/customization.cfg # load default configuration from file
-source "$_where"/linux-tkg-config/prepare
 
 if [ -e "$_EXT_CONFIG_PATH" ]; then
   msg2 "External configuration file $_EXT_CONFIG_PATH will be used and will override customization.cfg values."
@@ -40,6 +39,8 @@ fi
 
 source current_env
 
+source "$_where"/linux-tkg-config/prepare
+
 # Make sure we're in a clean state
 if [ ! -e "$_where"/BIG_UGLY_FROGMINER ]; then
   _tkg_initscript

install.sh

@@ -44,6 +44,12 @@ plain() {
 
 declare -p -x > current_env
 source customization.cfg
+
+if [ -e "$_EXT_CONFIG_PATH" ]; then
+  msg2 "External configuration file $_EXT_CONFIG_PATH will be used and will override customization.cfg values."
+  source "$_EXT_CONFIG_PATH"
+fi
+
 . current_env
 
 source linux-tkg-config/prepare