[xmonad] can one create layouts with fixed height or width for windows

[Don Stewart]

bitshifter:
> New to XMonad, and loving it.  Apologies if this has already come up
> and been answered, but I haven't been able to find anything through
> the usual suspects.
> 
> Editing code in terminals would be the main reason I want this, but
> there are a couple of other apps that look better with their windows a
> fixed size.
> 
> Is it possible, either through layouts or some other means to enforce
> that the maximum width a certain window can have?  I don't mind if
> there is a little wasted space on the screen, I really don't like
> violating the 80th column, however.
> 
> Pointers and/or suggestions would be welcome.
> 

This is perhaps the most frequently asked-for extension, along with a
popup/scratchpad terminal.

Having a layout that would respect the 80 character limit seems
like something people want. Anyone interested in working out how
to do this?