If PowerShell is not available, a proper message is now displayed when installing on Windows without admin priviledges

1 files changed, 4 insertions, 0 deletions

diff --git a/install.bat b/install.bat
index 22f72e13..11558f7f 100644
--- a/install.bat
+++ b/install.bat
@@ -491,6 +491,10 @@ check_flags()
 if not permission() then

         if not NOADMIN then

                 -- must elevate the process with admin priviledges

+        if not exec("PowerShell /? >NUL 2>&1") then

+          -- powershell is not available, so error out

+          die("No administrative priviledges detected and cannot auto-elevate. Please run with admin priviledges or use the /NOADMIN switch")

+        end

                 print("Need admin priviledges, now elevating a new process to continue installing...")

                 local runner = os.getenv("TEMP").."\\".."LuaRocks_Installer.bat"

                 local f = io.open(runner, "w")