Recompiling libgnome-shell.so

[Bob Andrew <bobandrew planetmail net>]

In previous versions of gnome-shell it was possible to do a lot of
tweaking through the .js files. These files appear to have been wrapped
up since Gnome 3.12, as explained here:

https://blogs.gnome.org/mclasen/2014/03/24/keeping-gnome-shell-approach
able

A slightly more recent post recaps the updated procedure to extract the
.js files and test the modifications:

https://wiki.gnome.org/HowDoI/ExtractShell

However, these posts do not explain how to make the changes permanent.

I tried to recompile the libgnome-shell.so file using 'glib-compile-
resources resources.gresource.xml' but managed only to break gnome-
shell. What am i missing? Are there extra files besides the .js
resources listed in the xml file that need to be included in the
compiling process?