Multiple instance of user-installed Flatpak.

entrypoint

#!/bin/bash

set -euo pipefail

if [ ! -v FLATPAK_ID ]; then echo "Not in Flatpak."; exit; fi;

DEFAULT_COMMAND=$(cat /app/manifest.json | python3 -c "import sys, json; print(json.load(sys.stdin)['command'])");

NEW_HOME="${HOME}/.altvar"
NEW_APP_DIR="${NEW_HOME}/app/${FLATPAK_ID}"

if [ ! -d "$NEW_HOME" ]; then echo "Not initialized."; exit; fi;

export XDG_CACHE_HOME="${NEW_APP_DIR}/cache"
export XDG_DATA_HOME="${NEW_APP_DIR}/data"
export XDG_CONFIG_HOME="${NEW_APP_DIR}/config"

mkdir -p "$XDG_CACHE_HOME"
mkdir -p "$XDG_DATA_HOME"
mkdir -p "$XDG_CONFIG_HOME"

echo -e "\e[1;32m[${FLATPAK_ID}] APP_DIR: ${NEW_APP_DIR}\e[0m"

eval ${DEFAULT_COMMAND}

flatpak-alt

#!/bin/bash

shift

echo $@ >> ~/.altvar/log

flatpak run --filesystem="$HOME/.altvar" --cwd="$HOME" --command=".altvar/entrypoint" $@