Brltty and Arch: My Problem is solved but Arch's is not!

[Kyle]

Have you filed a bug report against the Arch package? It sounds like 
your problem is related to the upstream change to glibc that deprecates 
/lib.
  If you have gotten over this hump with the rest of your packages, then 
this is a bug in the Arch Brltty package itself and should be filed in 
the Arch bug tracker, although it seems to work correctly on the install 
media, so further action may need to be taken for Brltty and other 
packages on your system as well if you are trying to run an upgrade. 
There is a news item[1] regarding this that links to a wiki page[2] for 
how to fix your /lib problems. Hope this helps.

[1] http://www.archlinux.org/news/the-lib-directory-becomes-a-symlink/
[2] https://wiki.archlinux.org/index.php/DeveloperWiki:usrlib
~Kyle