Adding custom libraries inside the kernel usr/lib

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you can create an openssl-libs platform snap and use the content interface to share it with your application snaps …

The content interface

The content interface allows sharing code and data from a slot on a producer snap to one or more plugs on consumer snaps. It’s often used to share common themes and icons from a producer snap, for example, to many snapped applications. Sharing happens at the filesystem level, which means anything that can be expressed as a file can be shared. This includes executables, libraries and data files, but also sockets. Example The Yaru MATE Icons snap is a good producer snap example, letting other ap…