I've looked into it before, but it looks like a fairly weighty process to go through.
It does look like someone is working on it though! https://github.com/x4121/ripgrep-ubuntu
ripgrep's releases do include binary debs, but there's no auto-update:
$ curl -LO https://github.com/BurntSushi/ripgrep/releases/download/0.10.0/ripgrep_0.10.0_amd64.deb
$ sudo dpkg -i ripgrep_0.10.0_amd64.deb
if command -V rg > /dev/null 2>&1; then
curvers="$(rg -V | cut -d' ' -f2)"
latestvers="$(curl -s "$latesturl" | jq -r .tag_name)"
if [ "$curvers" = "$latestvers" ]; then
echo "ripgrep is up to date"
(cd /tmp && curl -LO "$url" && sudo dpkg -i "$name")
echo "ripgrep updated from $curvers to $latestvers"