Fixed a few things

lib/lain/widget/fs.lua

@@ -9,6 +9,7 @@
 
 local helpers = require('lain.helpers')
 local Gio = require('lgi').Gio
+local GioUnix = require('lgi').GioUnix
 local focused = require('awful.screen').focused
 local wibox = require('wibox')
 local naughty = require('naughty')
@@ -83,11 +84,11 @@ local function factory(args)
 		fs_now = {}
 
 		local notifypaths = {}
-		for _, mount in ipairs(Gio.unix_mounts_get()) do
+		for _, mount in ipairs(GioUnix.mounts_get()) do
 			local info, path
-			local fs_ty = Gio.unix_mount_get_fs_type(mount)
+			local fs_ty = GioUnix.mount_get_fs_type(mount)
 			if fs_ty ~= 'autofs' and fs_ty ~= 'efivarfs' and fs_ty ~= 'tmpfs' then
-				path = Gio.unix_mount_get_mount_path(mount)
+				path = GioUnix.mount_get_mount_path(mount)
 				local root = Gio.File.new_for_path(path)
 				info = root:query_filesystem_info(query)
 			end

lib/sol.hpp

@@ -6752,7 +6752,7 @@ namespace sol {
 			static_assert(std::is_constructible<T, Args&&...>::value, "T must be constructible with Args");
 
 			*this = nullopt;
-			this->construct(std::forward<Args>(args)...);
+			new (static_cast<void*>(this)) optional(std::in_place, std::forward<Args>(args)...);
 		}
 
 		/// Swaps this optional with the other.