pkgs/by-name/pl/plex-desktop/update.sh

   1 #!/usr/bin/env nix-shell
   2 #! nix-shell -i bash -p curl jq git gnused gnugrep
   3
   4
   5 # executing this script without arguments will
   6 # - find the newest stable plex-desktop version avaiable on snapcraft (https://snapcraft.io/plex-desktop)
   7 # - read the current plex-desktop version from the current nix expression
   8 # - update the nix expression if the versions differ
   9 # - try to build the updated version, exit if that fails
  10 # - give instructions for upstreaming
  11
  12 # As an optional argument you can specify the snapcraft channel to update to.
  13 # Default is `stable` and only stable updates should be pushed to nixpkgs. For
  14 # testing you may specify `candidate` or `edge`.
  15
  16
  17 channel="${1:-stable}" # stable/candidate/edge
  18 nixpkgs="$(git rev-parse --show-toplevel)"
  19 plex_nix="$nixpkgs/pkgs/by-name/pl/plex-desktop/package.nix"
  20
  21
  22 #
  23 # find the newest stable plex-desktop version avaiable on snapcraft
  24 #
  25
  26 # create bash array from snap info
  27 snap_info=($(
  28   curl -s -H 'X-Ubuntu-Series: 16' \
  29     "https://api.snapcraft.io/api/v1/snaps/details/plex-desktop?channel=$channel" \
  30   | jq --raw-output \
  31     '.revision,.download_sha512,.version,.last_updated'
  32 ))
  33
  34 # "revision" is the actual version identifier on snapcraft, the "version" is
  35 # just for human consumption. Revision is just an integer that gets increased
  36 # by one every (stable or unstable) release.
  37 revision="${snap_info[0]}"
  38 # We need to escape the slashes
  39 hash="$(nix-hash --to-sri --type sha512 ${snap_info[1]} | sed 's|/|\\/|g')"
  40 upstream_version="${snap_info[2]}"
  41 last_updated="${snap_info[3]}"
  42 echo "Latest $channel release is $upstream_version from $last_updated."
  43 #
  44 # read the current plex-desktop version from the currently *committed* nix expression
  45 #
  46
  47 current_version=$(
  48   grep 'version\s*=' "$plex_nix" \
  49   | sed -Ene 's/.*"(.*)".*/\1/p'
  50 )
  51
  52 echo "Current version: $current_version"
  53
  54 #
  55 # update the nix expression if the versions differ
  56 #
  57
  58 if [[ "$current_version" == "$upstream_version" ]]; then
  59   echo "Plex is already up-to-date"
  60   exit 0
  61 fi
  62
  63 echo "Updating from ${current_version} to ${upstream_version}, released on ${last_updated}"
  64
  65 # search-and-replace revision, hash and version
  66 sed --regexp-extended \
  67   -e 's/rev\s*=\s*"[0-9]+"\s*;/rev = "'"${revision}"'";/' \
  68   -e 's/hash\s*=\s*"[^"]*"\s*;/hash = "'"${hash}"'";/' \
  69   -e 's/version\s*=\s*".*"\s*;/version = "'"${upstream_version}"'";/' \
  70   -i "$plex_nix"
  71
  72 #
  73 # try to build the updated version
  74 #
  75
  76 export NIXPKGS_ALLOW_UNFREE=1
  77 if ! nix-build -A plex-desktop "$nixpkgs"; then
  78   echo "The updated plex-desktop failed to build."
  79   exit 1
  80 fi
  81
  82 # Commit changes
  83 git add "$plex_nix"
  84 git commit -m "plex-desktop: ${current_version} -> ${upstream_version}"