Script readability (under 80 chars)

install-and-chroot.sh

@@ -2,6 +2,9 @@
 
 SCRIPT=${SCRIPTNAME:-'alpine-chroot-install'}
 DIR=${DIRPATH:-'/alpine'}
+script_url="https://raw.githubusercontent.com/alpinelinux/alpine-chroot-install"
+script_version="v0.9.0"
+script_name="alpine-chroot-install"
 
 # Tests
 if ! [[ $DIR == /* ]]; then
@@ -10,7 +13,7 @@ fi
 
 # DL alpine install script
 if ! test -f "$SCRIPT"; then
-  wget https://raw.githubusercontent.com/alpinelinux/alpine-chroot-install/v0.9.0/alpine-chroot-install -O "$SCRIPT" \
+  wget "${script_url}/${script_version}/${script_name}" -O "$SCRIPT" \
     && echo "e5dfbbdc0c4b3363b99334510976c86bfa6cb251  ${SCRIPT}" | sha1sum -c \
       || exit 1
   chmod +x "$SCRIPT"
@@ -18,7 +21,16 @@ fi
 
 # Install Alpine
 if ! test -d "$DIR"; then
-  sudo sh ./$SCRIPT -d $DIR -p build-base -p git -p zsh -p lua-filesystem -p luarocks5.1 -p lua-toml -p moonscript -p abuild -p lua-argparse || exit 1
+  sudo sh ./$SCRIPT -d $DIR \
+    -p abuild \
+    -p build-base \
+    -p git \
+    -p lua-argparse \
+    -p lua-filesystem \
+    -p lua-toml \
+    -p luarocks5.1 \
+    -p moonscript \
+    -p zsh || exit 1
 fi
 
 # Set rc_sys="prefix" to not disturb systemd on current system