flatpak.sh is a demo that shows how to install and run Flatpak packages inside of an Alpine Linux guest userland inside Lxroot.

flatpak-demo.sh

#! /bin/dash


#  version  20210616


#  flatpak.sh is a demo that shows how to install and run Flatpak
#  packages inside of an Alpine Linux guest userland inside Lxroot.


set  -o errexit


demo=/tmp/flatpak-demo    #  demo workspace
nr="$demo"/newroot        #  demo newroot


trace  ()  {   echo  "+  $@"  ;  "$@"  ;  }    #  ---------------------  trace


main  ()  {    #  ------------------------------------------------------  main

  #  make $demo directory
  if  [ -d "$demo" ]
    then  echo  "found  $demo"
    else  trace  mkdir  -p  "$demo"  ;  fi
  trace  cd  "$demo"

  #  download lxroot source code
  if  [ -d lxroot ]
    then  echo  'found  lxroot'
    else  trace  git  clone  https://github.com/parke/lxroot.git  ;  fi
  trace  cd  lxroot

  #  build bin/lxroot
  if  [ -f bin/lxroot ]
    then  echo  'found  bin/lxroot'
    else  trace  make build  ;  fi

  #  download and extract Alpine Linux
  if  [ -d "$nr" ]
    then  echo  "found  $nr"
    else  trace  bash  demo.sh  demo1_extract  "$demo"  "$nr"  ;  fi

  #  install resolv.conf
  if  [ -f "$nr"/etc/resolv.conf ]
    then  echo  "found  $nr/etc/resolv.conf"
    else  trace  cp  -n  /etc/resolv.conf  "$nr"/etc/  ;  fi

  #  mkdir $HOME inside $nr
  if  [ -d "$nr/$HOME" ]
    then  echo  "found  $nr/$HOME"
    else  trace  mkdir  -p  "$nr/$HOME"  ;  fi

  #  mkdir /tmp/.X11-unit inside $nr
  if  [ -d "$nr/tmp/.X11-unix" ]
    then  echo  "found  $nr/tmp/.X11-unix"
    else  trace  mkdir  -p  "$nr/tmp/.X11-unix"  ;  fi

  #  lxroot options explained:
  #    -n  allow network access
  #    -r  simulate root user
  #    -w  grant non-root users write access to all of newroot
  #    -x  bind mount /tmp/.X11-unix and set $DISPLAY

  #  as (simulated) root, install Flatpak inside $nr
  if  [ -f "$nr"/usr/bin/flatpak ]
    then  echo  "found  $nr/usr/bin/flatpak"
    else  trace  bin/lxroot  -nr  "$nr"  apk  update
          trace  bin/lxroot  -nr  "$nr"  apk  add  flatpak  ||  true  ;  fi

  #  as non-root, flatpak remote-add
  echo  ;  echo  '--------'
  trace  bin/lxroot  -nw  "$nr"  \
    flatpak  --user  remote-add  --if-not-exists  flathub  \
      https://dl.flathub.org/repo/flathub.flatpakrepo

  #  as non-root, install GnuCash
  echo  ;  echo  '--------'
  trace  bin/lxroot  -nw  "$nr"  \
    flatpak  --user  install  flathub  org.gnucash.GnuCash

  #  as non-root, run GnuCash
  echo  ;  echo  '--------'
  trace  bin/lxroot  -wx  "$nr"  \
    flatpak  --user  run  org.gnucash.GnuCash

  exit  ;  }


main