build.sh: pacman: never use -S without -yu syncing

https://wiki.archlinux.org/index.php/Pacman#Usage

diff --git a/build.sh b/build.sh
index b48cec41d0f55a1641aade57fa99e62b197e1644..4b47ca940f232abdfb8c644e4b4e972dee7af0cb 100755 (executable)
--- a/build.sh
+++ b/build.sh
@@ -681,7 +681,7 @@ install_deps_apt() {
 }
 
 install_deps_pacman() {
-    sudo pacman --noconfirm -S gcc clang make rlwrap git wget pango glibc gtk2 gtk3 gtkglext gtk-engines gdk-pixbuf2 libx11 screen tmux
+    sudo pacman --noconfirm -Syu gcc clang make rlwrap git wget pango glibc gtk2 gtk3 gtkglext gtk-engines gdk-pixbuf2 libx11 screen tmux
     check_ret sudo
 }