Make install.sh work on base 3.2 (for macOS)

install.sh

@@ -5,28 +5,11 @@ if [ ! -d $HOME/.local/share/tmux/layouts ]; then
   echo changed created layouts directory
 fi
 
-declare -A symlinks=(
+symlink() {
-  [$HOME/.config/tmux/tmux.conf]=$HOME/.tmux.conf
+  local source=$1
-)
+  local dest=$2
-
-layouts=(
-  session-config
-  session-infra
-  session-main
-  session-visor
-  window-auto
-  window-tall
-  window-wide-left
-  window-wide-right
-)
-for layout in ${layouts[@]}; do
-  symlinks[$HOME/.config/tmux/layouts/$layout]=$HOME/.local/share/tmux/layouts/$layout
-done
-
-for source in ${!symlinks[@]}; do
-  dest=${symlinks[${source}]}
   if [ -L $dest ]; then
-    target=`readlink $dest`
+    local target=`readlink $dest`
     if [ "$target" != "$source" ]; then
       rm $dest
       ln -s $source $dest
@@ -38,4 +21,23 @@ for source in ${!symlinks[@]}; do
     ln -s $source $dest
     echo changed created symlink $dest
   fi
-done
+}
+
+symlink $HOME/.config/tmux/tmux.conf \
+        $HOME/.tmux.conf
+symlink $HOME/.config/tmux/layouts/session-config \
+        $HOME/.local/share/tmux/layouts/session-config
+symlink $HOME/.config/tmux/layouts/session-infra \
+        $HOME/.local/share/tmux/layouts/session-infra
+symlink $HOME/.config/tmux/layouts/session-main \
+        $HOME/.local/share/tmux/layouts/session-main
+symlink $HOME/.config/tmux/layouts/session-visor \
+        $HOME/.local/share/tmux/layouts/session-visor
+symlink $HOME/.config/tmux/layouts/window-auto \
+        $HOME/.local/share/tmux/layouts/window-auto
+symlink $HOME/.config/tmux/layouts/window-tall \
+        $HOME/.local/share/tmux/layouts/window-tall
+symlink $HOME/.config/tmux/layouts/window-wide-left \
+        $HOME/.local/share/tmux/layouts/window-wide-left
+symlink $HOME/.config/tmux/layouts/window-wide-right \
+        $HOME/.local/share/tmux/layouts/window-wide-right