Better dependency handling, update README

README.md

@@ -2,17 +2,27 @@
 
 #### Features
 
-- LUKS/LVM setup
-- Package & Session selection
-- Full device auto partition
+- Minimal dependencies.
+- LUKS and/or LVM support.
+- Btrfs and subvolume support.
+- Full device auto partitioning.
+- Mirror country selection and sorting.
+- Self updating with persistent settings.
+- Background base install process while you customize.
+- Choose kernel, file system, bootloader, packages, sessions, shell, login manager, etc.
+
 
 #### Requirements
 
-- `dialog` displays user interactive dialogs.
-- `rsync` copies the live base during install.
-- `parted` partition management and querying info.
-- `arch-install-scripts` simple chroot setup with arch-chroot
-- `awk`, `sed`, `curl`, `coreutils`, `findutils`, `util-linux` misc tasks throughout the install.
+- `awk`
+- `sed`
+- `curl`
+- `dialog`
+- `parted`
+- `coreutils`
+- `findutils`
+- `util-linux`
+- `arch-install-scripts`
 
 
 #### Manual Installation

installer

@@ -2059,8 +2059,9 @@ install_background()
 		install_mirror_country
 	fi
 
+	if hash rsync > /dev/null 2>&1; then
 		yesno "Background Install" "$_bginstall" "Pacstrap" "Copy ISO" || PACSTRAP=0
-
+	fi
 	(
 		install_mirrorlist > /tmp/bgout 2>&1
 
@@ -2445,6 +2446,25 @@ btrfs_name()
 	return 0
 }
 
+btrfs_subvols()
+{
+	local part="$1"
+	local mntp="${MNT}$2"
+	local mvol=''
+
+	btrfs_name "\nEnter a name for the initial subvolume on $part." || return 1
+	mvol="$SUBVOL"
+	[[ $mntp == "$MNT" ]] && BTRFS_MNT="rootflags=subvol=$mvol"
+	btrfs subvolume create "$mntp/$mvol" > /dev/null 2> "$ERR"
+	errshow 0 "btrfs subvolume create $mntp/$mvol" || return 1
+	umount_dir "$mntp" || return 1
+	select_mntopts 'btrfs' && [[ $MNT_OPTS ]] && MNT_OPTS+=','
+	mount -o ${MNT_OPTS}subvol=${mvol} "$part" "$mntp" 2> "$ERR"
+	errshow 0 "mount -o ${MNT_OPTS}subvol=${mvol} $part $mntp" || return 1
+	btrfs_extsubvols "$mntp" "$mvol" || return 1
+	msg "Btrfs Setup Complete" "\nCreated subvolumes:\n\n$(ls -R "$mntp/$mvol")"
+}
+
 btrfs_extsubvols()
 {
 	local mntp="$1"
@@ -2469,25 +2489,6 @@ btrfs_extsubvols()
 	return 0
 }
 
-btrfs_subvols()
-{
-	local part="$1"
-	local mntp="${MNT}$2"
-	local mvol=''
-
-	btrfs_name "\nEnter a name for the initial subvolume on $part." || return 1
-	mvol="$SUBVOL"
-	[[ $mntp == "$MNT" ]] && BTRFS_MNT="rootflags=subvol=$mvol"
-	btrfs subvolume create "$mntp/$mvol" > /dev/null 2> "$ERR"
-	errshow 0 "btrfs subvolume create $mntp/$mvol" || return 1
-	umount_dir "$mntp" || return 1
-	select_mntopts 'btrfs' && [[ $MNT_OPTS ]] && MNT_OPTS+=','
-	mount -o ${MNT_OPTS}subvol=${mvol} "$part" "$mntp" 2> "$ERR"
-	errshow 0 "mount -o ${MNT_OPTS}subvol=${mvol} $part $mntp" || return 1
-	btrfs_extsubvols "$mntp" "$mvol" || return 1
-	msg "Btrfs Setup Complete" "\nCreated subvolumes:\n\n$(ls -R "$mntp/$mvol")"
-}
-
 ###############################################################################
 # lvm functions
 
@@ -3259,9 +3260,14 @@ system_identify()
 # enable some nicer colours in the linux console
 termcol
 
+MISS=""
+for i in dialog find parted curl arch-chroot; do
+	hash $i >/dev/null 2>&1 || MISS+="$i "
+done
+
 # ensure the required packages are installed and that we're running as root on x86_64 architecture
-if ! hash dialog rsync find parted curl arch-chroot >/dev/null 2>&1; then
-	echo "One or more required packages are missing: dialog, curl, rsync, parted, findutils, arch-install-scripts"
+if [[ $MISS ]]; then
+	printf "This installer requires the following package(s) to be installed:\n\n\t%s" "$MISS"
 	die 1
 elif (( UID != 0 )); then
 	msg "Not Root" "\nThis installer must be run as root or using sudo.\n\nExiting..\n" 2