The current amd64 minimal install iso has a broken /usr/bin/nano. This is because it is using the broken app-editors/nano-2.3.1-r1 which is missing the hardcoded dep on sys-apps/file. This is documented in bug #407599.
I would guess that nano initially gets built against & linked to sys-apps/file's libmagic, but file is later depcleaned since there is no dep on it.
Bumping the install cd's nano version to 2.3.1-r2 should fix things. It will either pull in sys-apps/file as a dep or disable the linking to libmagic, depending on whether USE=magic is set. Either way it would leave us with a working nano.
I second this bug. I am currently unable to run nano on a clean install of the AMD64 minimal.
Problem persists with install-amd64-minimal-20121107.iso
*** Bug 440282 has been marked as a duplicate of this bug. ***
Bumping nano's version to 2.3.1-r2 is not (alone) going to fix this. This nano version has IUSE=".. +magic .." so magic support will be on by default, BUT the installcd-stage2-minimal.spec file has sys-apps/file in its "livecd/unmerge" list so it gets purged unconditionally.
So (as I understand it) we need to either add -magic to the stage1 spec's USE, or remove sys-apps/file from stage2's unmerge list. This is my first day with catalyst livecd builds, be gentle if I'm off-base here =)
I was searching Google for more info about this before coming here, and found that this seems to not be limited to nano not working. The links /var/lock (to /run/lock), /var/mail (to /var/spool/mail) and /var/run (to /run) all seem to be broken, as the target dirs don't exist. The lack of /var/run means dhcpcd can't run.
(In reply to comment #5)
> I was searching Google for more info about this before coming here, and
> found that this seems to not be limited to nano not working. The links
> /var/lock (to /run/lock), /var/mail (to /var/spool/mail) and /var/run (to
> /run) all seem to be broken, as the target dirs don't exist. The lack of
> /var/run means dhcpcd can't run.
This problem is covered in two other bugs: bug #441978 for amd64-minimal-20121013.iso (needs to be confirmed, I had this one as well), and bug #443442 for amd64-minimal-20121107.iso (confirmed).
We have a new CD working and this version is being dropped from the mirrors.
 - http://distfiles.gentoo.org/releases/amd64/autobuilds/20121210/