updated arch build requirements

setup/os-dependencies/arch.zsh

@@ -0,0 +1,15 @@
+YAY__SOURCE_TARGET='https://aur.archlinux.org/yay.git'
+YAY__LOCAL_PATH="$HOME/.packages/yay"
+
+YAY__INSTALL_FROM_SOURCE() {
+	[ -d $YAY__LOCAL_PATH ] && return 0
+
+	CHECK 'downloading yay'
+	git clone $ARCH__YAY_TARGET $YAY__LOCAL_PATH >>$LOG 2>&1\
+		&& OK || { WARN; return 1; }
+
+	cd $YAY__LOCAL_PATH
+	CHECK 'installing yay'
+	yes | makepkg -si >>$LOG 2>&1 \
+		&& OK || { WARN; return 1; }
+}