My personal ebuild overlay for Gentoo. It used to be much bigger; It may get a bit smaller.
This overlay is in the Gentoo repositories listing.
To add it to your system:
you@yourprompthere # eselect repository enable trolltoo
you@yourprompthere # emaint sync -r trolltoo
If you still use layman::
you@yourprompthere # layman -a trolltoo
You likely added this overlay to get a few specific packages, but you don't know what else may be in here, or may be added in the future. Best-practice (Based on Masking installed but unsafe ebuild repositories) is to only allow what you came here for:
In /etc/portage/package.mask/trolltoo, block all packages from this repository by default:
*/*::trolltoo
In /etc/portage/package.unmask/trolltoo, allow specific packages from this repository:
net-misc/gstm::trolltoo
They will likely also need to be added to /etc/portage/package.accept_keywords/, as well.