install cleaning

reverting a change from july 2017, that had the installer ignore a source if it came from the only rw candidate, when running the multi-selection util. I can see the irritation or confusion of the user when running the installer and it considers a secondary drive as a viable source candidate. Typically, a system would have additional hdds merely to store data. Typically the ro loot floppies are the desired source candidates. I believe the intention here was: "We have multiple source candidates, but only one is rw, thus it is probable that the rw candidate isn't actually intended for install" But I disagree, when testing custom floppies there will easily be one additional rw source.

Also, this change includes some additional command line clarification. If the system selects a source automatically, the first prompt the user sees is where to install. This can be jarring or confusing -- as the user doesn't know yet WHAT is being installed. In that case, we now display what is up for installation before asking where to install it.

src/main/resources/assets/opencomputers/loot/openos/lib/core/install_basics.lua

@@ -139,6 +139,19 @@ if #sources ~= 1 then
 end
 if not source then return end
 
+options =
+{
+  from     = source.path .. '/',
+  fromDir  = fs.canonical(options.fromDir or source.prop.fromDir or ""),
+  root     = fs.canonical(options.root or options.toDir or source.prop.root or ""),
+  update   = options.update or options.u,
+  label    = source.prop.label or label,
+  setlabel = not (options.nosetlabel or options.nolabelset) and source.prop.setlabel,
+  setboot  = not (options.nosetboot or options.noboot) and source.prop.setboot,
+  reboot   = not options.noreboot and source.prop.reboot,
+}
+local source_display = options.label or source.dev.getLabel() or source.path
+
 -- Remove the source from the target options
 for index,entry in ipairs(targets) do
   if entry.dev == source.dev then
@@ -149,23 +162,16 @@ end
 
 -- Ask the user to select a target
 if #targets ~= 1 then
-  utils = utils or loadfile(utils_path, "bt", _G)
+    if #sources == 1 then
+      io.write(source_display, " selected for install\n")
+    end
+
+    utils = utils or loadfile(utils_path, "bt", _G)
   target = utils("select", "targets", options, targets)
 end
 if not target then return end
 
-options =
-{
-  from     = source.path .. '/',
-  to       = target.path .. '/',
-  fromDir  = fs.canonical(options.fromDir or source.prop.fromDir or ""),
-  root     = fs.canonical(options.root or options.toDir or source.prop.root or ""),
-  update   = options.update or options.u,
-  label    = source.prop.label or label,
-  setlabel = not (options.nosetlabel or options.nolabelset) and source.prop.setlabel,
-  setboot  = not (options.nosetboot or options.noboot) and source.prop.setboot,
-  reboot   = not options.noreboot and source.prop.reboot,
-}
+options.to       = target.path .. '/'
 
 local cp_args =
 {
@@ -175,7 +181,6 @@ local cp_args =
   fs.concat(options.to  , options.root)
 }
 
-local source_display = options.label or source.dev.getLabel() or source.path
 local special_target = ""
 if #targets > 1 or target_filter or source_filter then
   special_target = " to " .. cp_args[4]

src/main/resources/assets/opencomputers/loot/openos/lib/core/install_utils.lua

@@ -53,20 +53,6 @@ if cmd == "select" then
       end
       os.exit(1)
     end
-    local index_of_rw_source
-    for index,entry in ipairs(devices) do
-      if not entry.dev.isReadOnly() then
-        if index_of_rw_source then
-          -- this means there was another rw source, no special action required
-          index_of_rw_source = nil
-          break
-        end
-        index_of_rw_source = index
-      end
-    end
-    if index_of_rw_source then
-      table.remove(devices, index_of_rw_source)
-    end
     return select_prompt(devices, "What do you want to install?")
   elseif arg == "targets" then
     if #devices == 0 then
@@ -77,7 +63,6 @@ if cmd == "select" then
       end
       os.exit(1)
     end
-
     return select_prompt(devices, "Where do you want to install to?")
   end
 end