In which I (successfully) try to compile and install Arch's hardened kernel from Manjaro

compile-kernel-interactive.sh

KEYSERVER='hkp://pool.sks-keyservers.net'

yay asp-https
yay ccache
# yay base-devel

cp /etc/makepkg.conf ~/.makepkg.conf
vim ~/.makepkg.conf

cd archlinux
mkdir asp
cd asp

asp checkout -v linux-hardened
cd linux-hardened

asp checkout xmlto
cd xmlto

makepkg  # fails because of missing gpg public keys

gpg -v --auto-key-locate cert,pka,dane,wkd,keyserver --locate-keys torvalds@kernel.org gregkh@kernel.org

pacman-key --finger FC1B547C8D8172C8

# sudo pacman-key --updatedb
# sudo pacman-key --init
# sudo pacman-key --populate archlinux manjaro
# sudo pacman-key --refresh-keys

gpg --keyserver $KEYSERVER --search-keys FC1B547C8D8172C8

makepkg