Add a function for declaring software dependencies

scripts/Arch/Drivers/SurfaceBook2/main.fish

@@ -21,6 +21,9 @@ begin
         sudo systemctl enable --global surface-dtx-userd.service
     end
 
-    runInstaller --force $argv
+    function installSWDependencies
         fish "$dir/../Surface/main.fish" $argv
     end
+
+    runInstaller --force $argv
+end

scripts/lib/software.fish

@@ -9,7 +9,8 @@ begin
     set -l actions \
         install installSW \
         configure configureSW \
-        userConfig userConfig
+        userConfig userConfig \
+        dependencies installSWDependencies
 
     set -a actions $backupActions
 
@@ -109,6 +110,8 @@ begin
         set -l name $_flag_name
         set -l action $_flag_action
         set -l args $_flag_force --name "$name"
+        set -l dependencyFunction "installSWDependencies"
+        set -l installDependencies
         source "$dir/settings.fish"
 
         if [ -n "$_flag_force" ]
@@ -117,6 +120,12 @@ begin
             set force false
         end
 
+        if functions -q "$dependencyFunction"
+            set installDependencies __runSosftwareDependencyInstaller
+            functions -c "$dependencyFunction" "$installDependencies"
+            functions -e "$dependencyFunction"
+        end
+
         if isProgramEnabled $args || $force
             set install true
         else
@@ -204,5 +213,11 @@ begin
                 end
             end
         end
+
+        if [ -n "$installDependencies" ]
+            "$installDependencies" --action "$action" $args $argv
+            functions -c "$installDependencies" "$dependencyFunction"
+            functions -e "$installDependencies"
+        end
     end
 end