openpgp-keys-calculate-release : OpenPGP keys used for Calculate binary packages ( https://www.calculate-linux.org/ )
shim-signed : UEFI Shim bootloader for SecureBoot signed by Microsoft ( https://mjg59.dreamwidth.org/20303.html )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a calculate
For Paludis use this rsync : rsync://gentoo.zugaina.org/calculate-portage
If you have a problem : ycarus(-at-)zugaina.org