Architecture that facilitates the package partitioning of application resources based on conditions, and the package applicability based on the conditions. An index is created for a unified lookup of the available resources. At build time of an application, the resources are indexed and determined to be applicable based on the conditions. The condition under which the resource is applicable is then used to automatically partition the resource into an appropriate package. Each resource package then becomes applicable under the conditions in which the resources within it are applicable, and is deployed to the user if the user merits the conditions (e.g., an English user will receive an English package of English strings, but not a French package). Before the application is run, the references to the resources are merged and can be used to do appropriate lookup of what resources are available.