Is there a list of open source hosting facilities which accept (La)TeX packages published under the LPPL license? Which open source hosting facility did you chose for your (La)TeX project and why?
The LPPL is relatively unusual, and so for sites which limit to open source licenses you may have to ask. In the past, I've used BerliOS: they seemed quite flexible about the license provided you provide a reason.
On the other hand, there are sites which host in a license-neutral way. For example, both GitHub and BitBucket allow you to use any license. (These sites tend to make their money from closed-source material from paying customers.)
Thus the question tends not to be 'which host supports the license', but is more to do with other features.
We're using Launchpad for the TeX-SX "Answers to Packages" package (start with What are your favourite TikZ/PGF answers? and follow the links). I remember that I had to select something like "Other free licence" when I signed up and there was a notice saying that they would assess the licence and get back to me if it wasn't okay. They haven't gotten back to me so I assume that they're okay with the LPPL.
Consider simply dual-licensing your package. It’s pretty common to have Open Source projects use multiple licenses and just let the user pick what suits them best.
This way, you can license your package as LPPL, but at the same time have any other license that satisfies your code hoster. For instance, the README file of my
minted package contains the following passage:
This work may be distributed and/or modified under the conditions of the LaTeX Project Public License, either version 1.3 of this license or (at your option) any later version. Additionally, the project may be distributed under the terms of the new BSD license.
This is both legal and safe.