Arch Linux

This isn't the right approach. Files in /usr are never meant for site-local modification -- I won't add backup entries for them. If you need to maintain your own, do that, and invoke mkarchroot with the -C option and an appropriate path.

Out of curiosity, what sort of modifications are you making?

I mostly use the the extra and multilib scripts to build in a chroot instead of using makepkg directly. The modification I make is to add a 3:rd party repo (archlinux-production). I know that there are other ways to include dependencies not in the main repo, but using it this way turned out to be fairly painless. Maybe I go about it the wrong way, and I should override the config files somewhere else? I guess an alternative would be to add /etc/devtools and let config files there override the config files in /usr/share/devtools? It's just a bit annoying to have to update the config files when there is an update to devtools, but I suppose I could script something to do that fairly easily too.

In any case, an easy solution would be greatly appreciated :)

I tend to think using the flags already provided by mkarchroot is pretty easy. Wouldn't you agree?

Beh, sorry about the form reload :S

I found changing the config files easier, but I guess I can write my own scripts to replace the devtools ones, or even easier a script that updates the config files when they've been updated. It's not like it happens all the time, and I suppose I'm probably the only one doing this.

I suppose I'm in a vast minority in using devtools like this, so if you feel there is no merit in implementing the request, just go ahead and close it. Now that I figured out why my changes to the config files gets wiped, I can easily implement a solution locally.