detect os for init.vim

home/.config/nvim/init.vim

@@ -1,5 +1,19 @@
-" check if firenvim is accessing this, load it's specific configs if so.
 lua << EOF
+local BinaryFormat = package.cpath:match("%p[\\|/]?%p(%a+)")
+if BinaryFormat == "dll" then
+    function os.name()
+        return "Windows"
+    end
+elseif BinaryFormat == "so" then
+    function os.name()
+        return "Linux"
+    end
+elseif BinaryFormat == "dylib" then
+    function os.name()
+        return "MacOS"
+    end
+end
+
 if vim.g.started_by_firenvim == true then
     vim.cmd('runtime firenvim.vim')
     vim.cmd('runtime common.vim')
@@ -8,4 +22,8 @@ else
     vim.cmd('runtime main.vim')
 end
 
+if os.name() == "Windows" then
+    vim.cmd('runtime windows.vim')
+end
+
 EOF