It is proposed to allow users to specify a set of Windows Registry entries as an input to jpackage command. Such entries needs to be created on install and removed on uninstall.

Example:

jpackage ^
    --name ... ^
    --input ... ^
    ... ^
    --win-registry-file path/to/file

Windows Registry values can be of different data types, most (but not all) of them are supported by WiX (and underlying Windows Installer) tools. It is proposed to allow creating an arbitrary number of entries containing any of data types supported by WiX.

There are multiple open questions regarding the usability (for example, input file format) and implementation details. Initial draft implementation is provided in linked PR as a starting point for the discussion.