AUR/makepkg automation script

aur.sh

#!/bin/bash
set -e

DSTDIR="/tmp"

if [[ -z $1 ]]; then
	echo No package specified >&2
	exit 1
fi

package=$1

tempdir=`mktemp -d`
cd $tempdir

chown $USER:nogroup $tempdir
chmod g+wx $tempdir

export DSTDIR
export package
su nobody -s /bin/bash <<'end_build'

git clone "https://aur.archlinux.org/${package}.git"
cd "$package"

makepkg -o

source "PKGBUILD"
version=$(pkgver)-${pkgrel}
filename="${package}-${version}-x86_64.pkg.tar.zst"
if [[ -f "$DSTDIR/$filename" ]]; then
	echo "File $filename already exists, aborting"
	exit
fi

makepkg
cp "$filename" ..
end_build

file="$package"-*.pkg.tar.zst
if test -f $file; then
	gpg -v --detach-sign --no-armor $file
	cp -v $file{,.sig} "$DSTDIR"
	cd "$DSTDIR"
	repo-add -s -n -R levitating.db.tar.gz $file
fi