gentoo doesn't enable bitmap support despite identifying kitty

[dankamongmen]

This is an odd one. I've got a gentoo Docker in which I'm updating our ebuild. We properly identify kitty, and yet....we don't seem to enable any bitmap support.

no idea how this is happening, very strange! a good issue #2000.

[dankamongmen]

it's getting reset somewhere between the end of interrogate_terminal() and when we check it in notcurses-info...

[dankamongmen]

update_term_dimensions() is to blame!

[dankamongmen]

ahhhh, the ioctl() is not providing the pixel values?

[dankamongmen]

yep ioctl(3, TIOCGWINSZ, {ws_row=70, ws_col=108, ws_xpixel=0, ws_ypixel=0}) = 0 why?

[dankamongmen]

the solution in #1891 meanwhile works just fine. so let's implement that, and this will be resolved.

[dankamongmen]

with the resolution of #1891, this works in the gentoo docker. hurrah!

[dankamongmen]