fix select package version again

1 files changed, 1 insertions, 0 deletions

diff --git a/xmake/modules/private/action/require/impl/package.lua b/xmake/modules/private/action/require/impl/package.lua
index 3d46965a9..629dd4af9 100644
--- a/xmake/modules/private/action/require/impl/package.lua
+++ b/xmake/modules/private/action/require/impl/package.lua
@@ -440,6 +440,7 @@ function _select_package_version(package, requireinfo, locked_requireinfo)
     end)
     assert(#package:schemes_orderlist() > 0, "package(%s): no available schemes", package:displayname())
 
+    local is_system = requireinfo.system
     if not version and not package:is_thirdparty() and is_system ~= true then
         local require_version = requireinfo.version
         raise("package(%s): version(%s) not found!", package:displayname(), require_version)