[elrepo] nvidia-detect feature enhancement

[Phil Perry]

Hi all,

We've recently received a suggestion and contribution from some of our
friends at Scientific Linux to add a terse (-t) command line argument to
provide a more terse output of only the package name (kmod-nvidia,
kmod-nvidia-340xx, kmod-nvidia-304xx etc). For example:

$ nvidia-detect -t
kmod-nvidia-340xx

Where I particularly like this suggestion is it's proposed use in the
form of:

# yum install $(nvidia-detect -t)

In fact I like this suggestion so much I'm thinking of making this
output the default behaviour and adding a verbose (-v) switch instead of
the terse (-t) switch originally proposed.

I'd really like some input from users here as you guys use nvidia-detect
in ways I'd not thought of.

If we went with the verbose option, default text output would just be
the package name, or null. Thus, I would expect usage:

# yum install $(nvidia-detect)

to behave as desired - either it will install the appropriate package or
yum will fail due to no package name.

The only thing I'm unsure how to handle is nvidia-detect's warning
messages. I don't really want to suppress these by default, but if we
don't then yum will treat them as a list of arguments and try to parse
them (not what we want).

Anyway, I'd really appreciate hearing the thoughts of users.