This is a mirror NTC's Debian package archives, or at least the ones that I'm aware of. I currently have mirrors for (you can browse them):
FYI: The PocketCHIP uses both the CHIP and PocketCHIP repositories listed above. The PocketCHIP specific software is in its own repository.
To use these repositories all you need to do is update the applicable lines in your "/etc/apt/sources.list" files with my domain name. Example:
deb http://opensource.nextthing.co/chip/debian/repo jessie main deb http://opensource.nextthing.co/chip/debian/pocketchip jessie main
deb http://chip.jfpossibilities.com/chip/debian/repo jessie main deb http://chip.jfpossibilities.com/chip/debian/pocketchip jessie main
I made sure to use the same paths for file locations to make it easier on lesser experienced users. Remember the "pocketchip" line above will only be on PocketCHIP installs.
You will also want to update the applicable lines in your "/etc/apt/preferences" files with my domain name. Example:
Package: * Pin: origin opensource.nextthing.co Pin-Priority: 1050
Package: * Pin: origin chip.jfpossibilities.com Pin-Priority: 1050
There were two copies in my file. You just need one corrected copy. I left one copy of the original NTC section and altered the first with my repo domain name. If an "apt-get upgrade" breaks Pico-8 this change will fix it, after another "upgrade".
Unfortunately NTC did not allow browsing of their repository servers so it was up to me to guess what was available for mirroring. I used Debian's "apt-mirror" to mirror the repositories listed on my devices. This clones a repository by reading the package and release files pointed to by apt source definitions. This means that I can be missing stuff that might otherwise have been available on their server (old packages, repos not used by my devices, ...). It also means that the signing remained intact. So you can be cryptographically ensured that neither I nor anyone else has tampered with this mirror. It also means you won't need to install a new key on your CHIP. :-)
NOTE: I refreshed my archive shortly before the NTC repository fell off the iNet. Since it had been a few months since NTC had been operating I'm reasonbly sure these are the "Latest and Greatest".
If you find this resource of value please drop me a line. My contact info is available here.