How difficult would a mips-sgi-irix6.5 port be?

the ghc pages say:

mips-sgi-irix5:

    Port currently doesn't work, needs some minimal
porting effort. As usual, we don't have
    access to machines and there hasn't been an
overwhelming demand for this port, but feel
    free to get in touch.

How much skill / experience would be necessary for such
a port?
Ie. I'm wondering if I could do it.

ta for any advice

Duncan