How can I rebuild an edited Raku module that I've downloaded?

I've installed Time::Duration and it failed most of its tests. I want to be able to rebuild the module - with my edits - from the locally stored module.

I edited the file that contains the module (that corresponds to Duration.pm6):

~/.perl6/sources/D00C101A0157E3EAC494310C9961F299240423E7

And then try building via it's json file:

zef --debug build ~/.perl6/dist/83839D8D315EEDEDFEAF211EE42E8D936ACE29CB

This returns:

===> # SKIP: No need to build Time::Duration:ver<2.00>
!!!> Build failure: ~/.perl6/dist/83839D8D315EEDEDFEAF211EE42E8D936ACE29CB at ~/.perl6/dist

I was hoping that this would rebuild the module with the change I made to the source.

Have I done this wrong, or am I going about this entirely wrong?

Solution

As it has been noted already you should not modify installed files. However, the workflow for testing changes of some module is pretty straight forward.

First:

# Fetch and extract the distribution, then change into its directory.
# If the distribution is still in zef's local file cache then it will
# skip the fetch and extraction steps.

zef look Time::Duration

Then:

At this point you can edit any of the files you wish.

Finally:

# test your changes without reinstalling (assumes all dependencies are installed)
zef test .

# Reinstall the modified version of Time::Duration using one of the following:
zef install . --force-install
zef uninstall Time::Duration && zef install .