The ACM custom repo is a local package repository for internal ACM packages. One example being the LXDM themes used by the ACM/LUG workstations. It currently only supports packages with arch type “any”.
The PKGBUILDs and files are stored in a git repo on the ACM system.
Add the mirror to the workstations pacman config
[uicacm] SigLevel = Optional TrustAll Server = http://mozart.acm.cs/acm-packages/archlinux/
then sync the repo DB
Currently the repo is hosted on mozart.acm.cs
The files are located under the standard archlinux http root /srv/http
Clone the repo and build the packages with makepkg. All the current version symlinks should be in place, but double check if you have updated a version.
For more information read the Arch Linux pages on custom repos and PKGBUILDs