installer: route install through system and user phases

install/login/default-keyring.sh

@@ -4,7 +4,8 @@ DEFAULT_FILE="$KEYRING_DIR/default"
 
 mkdir -p "$KEYRING_DIR"
 
-cat << EOF > "$KEYRING_FILE"
+if [[ ! -f $KEYRING_FILE ]]; then
+  cat > "$KEYRING_FILE" <<EOF
 [keyring]
 display-name=Default keyring
 ctime=$(date +%s)
@@ -12,10 +13,13 @@ mtime=0
 lock-on-idle=false
 lock-after=false
 EOF
+fi
 
-cat << EOF > "$DEFAULT_FILE"
+if [[ ! -f $DEFAULT_FILE ]]; then
+  cat > "$DEFAULT_FILE" <<EOF
 Default_keyring
 EOF
+fi
 
 chmod 700 "$KEYRING_DIR"
 chmod 600 "$KEYRING_FILE"