Can modules be hotpatched?

Question

I want to be able to hotpatch modules while the program is running for a project I'm working on. I tried this, but it doesn't work:

qx[rm -r .precomp/*];
try require PSBot;
try PSBot.test;

Is it possible to do? If so, how can I do it?

Did you check what the error is when the `require` fails? I bet that's an indication why that's going to be hard. — Elizabeth Mattijsen, Jan 11 '19 at 23:51

score 5 · Accepted Answer · answered Jan 12 '19 at 07:42

5

answered Jan 12 '19 at 07:42

jjmerelo

2

You can't unload, but could you potentially load again with a different version, and have a top level manager module that routed calls to the latest version? You would eventually run into memory problems I guess. – Curt Tilmes Jan 12 '19 at 14:08
3

Depending on if you want to keep any global state, I guess you could whip up a Perl 6 process that calls another process, which would drop out of that when needed. But that feels more like you'd need an `nginx` frontend with a soft restart on the backend (if you catch my drift) – Elizabeth Mattijsen Jan 12 '19 at 21:58

1 Answers1