This script allows you to extract and register with your Desktop Environment a Vivaldi Linux deb build with a unique keyword, to assist with multiple side-by-side installs

register-named-vivaldi-build.sh

#!/bin/sh -eu
if [ "x${1:-}" = "x-n" ] && [ -n "${2:-}" ]; then
  name="${2#vivaldi-}"
  class="Vivaldi-$name"
  echo "Using the name: vivaldi-$name"
  shift 2
else
  echo -e "You must supply a name like so:\n\n   $0 -n keyword\n" >&2
  exit 1
fi
update_dbs () {
  touch -c "${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor" 2>/dev/null ||:
  if command -v gtk-update-icon-cache >/dev/null 2>&1; then
    gtk-update-icon-cache -tq "${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor" 2>/dev/null ||:
  fi
  if command -v update-desktop-database >/dev/null 2>&1; then
    update-desktop-database -q "${XDG_DATA_HOME:-$HOME/.local/share}/applications" 2>/dev/null ||:
  fi
}
if [ "x${1:-}" = "x-d" ]; then
  echo "De-registering..."
  rm -fv "${XDG_DATA_HOME:-$HOME/.local/share}/applications/vivaldi-$name.desktop"
  find "${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor"/*/apps -name vivaldi-$name.png -exec rm -v {} \;
  update_dbs
  if [ -h "$HOME/bin/vivaldi-$name" ]; then
    rm -v "$HOME/bin/vivaldi-$name"
  fi
  if [ -h "${XDG_DATA_HOME:-$HOME/.local/share}/../bin/vivaldi-$name" ]; then
    rm -v "$(cd "${XDG_DATA_HOME:-$HOME/.local/share}/../bin"; pwd)/vivaldi-$name"
  fi
  exit
fi
if [ -n "${1:-}" ]; then
  if echo "$1" | grep -qE "vivaldi-(stable|snapshot)_(([0-9]+\.){3}[0-9]+)-[0-9]+_[a-z0-9]+" && [ -e "$1" ]; then
    v="$(basename "$1")"
  else
    echo "$1 is not a Vivaldi package" >&2
    exit 1
  fi
else
 echo "Supply the name of the Vivaldi .deb package you wish to register" >&2
 exit 1
fi
cd "$(dirname "$1")"
d="${v%.deb}-$name"
if [ -d "$d" ]; then
  rm -r "$d"
fi
mkdir "$d"
echo "Extracting: $v" >&2
ar p "$v" data.tar.xz | tar JxC "$d" ./opt ./usr/share/applications --strip 3
echo "Registering: $d" >&2
w="$(find "$d" -maxdepth 1 -type f \( -name vivaldi -o -name vivaldi-snapshot \))"
sed -i "/^exec -a/s,\"\$@\", --user-data-dir=\"${XDG_CONFIG_HOME:-$HOME/.config}/vivaldi-$name\" --class=\"$class\" \"\$@\"," "$w"
sed -i "s,^Exec=\(.*vivaldi[a-z0-9-]\+\) ,Exec=$PWD/$w ,;s,^Icon=${w#*/},Icon=vivaldi-$name,;0,/^Name=/s,^Name=.*,Name=Vivaldi ($name),;/^StartupNotify/ i StartupWMClass=$class" "$d/applications"/*.desktop
for p in "$d"/product_logo_*.png; do
  s="$(echo "${p#*/}" | grep -o '[0-9]\+')"
  l="${XDG_DATA_HOME:-$HOME/.local/share}/icons/hicolor/${s}x$s/apps"
  mkdir -p "$l"
  ln -fs "$PWD/$p" "$l/vivaldi-$name.png"
done
install -Dm644 "$PWD/$d/applications"/*.desktop "${XDG_DATA_HOME:-$HOME/.local/share}/applications/vivaldi-$name.desktop"
if [ -d "$HOME/bin" ]; then
  ln -fs "$PWD/$w" "$HOME/bin/vivaldi-$name"
elif [ -d "${XDG_DATA_HOME:-$HOME/.local/share}/../bin" ]; then
  ln -fs "$PWD/$w" "${XDG_DATA_HOME:-$HOME/.local/share}/../bin/vivaldi-$name"
fi
update_dbs
cat <<HELP

                                  ***


        NOTE: You may need to re-login before vivaldi-$name shows up!


                                  ***

                          REMOVAL INSTRUCTIONS


Should you wish to "uninstall" in the future, you can de-register this build
like so:

    $0 -n $name -d

Then delete the extracted directory:

    rm -r "$(dirname "$1")/$d"


HELP

Hi, is this script replaces rvp.sh?