1. One or more non-transitory computer-readable media comprising instructions executable by one or more processors to perform acts comprising: accessing, by an application package installer provided by an operating system, a library area of an application package, wherein the library area includes a wrapper library and a custom loader; installing, by the application package installer, the wrapper library and the custom loader that are stored in the library area, the wrapper library to receive a call from an application and translate the call to access a native code library; initiating execution of an application that is stored in the application package; locating, by the custom loader, the native code library stored in a hidden area of the application package; and loading, by the custom loader, the native code library in the one or more non-transitory computer-readable media based at least in part on determining that the application has initiated execution, wherein the hidden area of the application package is inaccessible to the application package installer but is accessible to the custom loader.