discord: add a script to disable breaking updates (#197248)

#!@pythonInterpreter@

# slightly tweaked from the script created by @lionirdeadman

# https://github.com/flathub/com.discordapp.Discord/blob/master/disable-breaking-updates.py

"""

Disable breaking updates which will prompt users to download a deb or tar file

and lock them out of Discord making the program unusable.

This will dramatically improve the experience :

 1) The maintainer doesn't need to be worried at all times of an update which will break Discord.

 2) People will not be locked out of the program while the maintainer runs to update it.

"""

import json

import os

from pathlib import Path

XDG_CONFIG_HOME = os.environ.get("XDG_CONFIG_HOME") or os.path.join(

    os.path.expanduser("~"), ".config"

)

settings_path = Path(f"{XDG_CONFIG_HOME}/@configDirName@/settings.json")

settings_path_temp = Path(f"{XDG_CONFIG_HOME}/@configDirName@/settings.json.tmp")

try:

    with settings_path.open(encoding="utf-8") as settings_file:

        settings = json.load(settings_file)

        if settings.get("SKIP_HOST_UPDATE"):

            print("[Nix] Disabling updates already done")

        else:

            skip_host_update = {"SKIP_HOST_UPDATE": True}

            settings.update(skip_host_update)

            with settings_path_temp.open("w", encoding="utf-8") as settings_file_temp:

                json.dump(settings, settings_file_temp, indent=2)

            settings_path_temp.rename(settings_path)

            print("[Nix] Disabled updates")

except IOError:

    print("[Nix] settings.json doesn't yet exist, can't disable it yet")

, glib, gtk3, libcxx, libdrm, libnotify, libpulseaudio, libuuid, libX11

, libXScrnSaver, libXcomposite, libXcursor, libXdamage, libXext, libXfixes

, libXi, libXrandr, libXrender, libXtst, libxcb, libxshmfence, mesa, nspr, nss

, pango, systemd, libappindicator-gtk3, libdbusmenu, writeScript

, pango, systemd, libappindicator-gtk3, libdbusmenu, writeScript, python3, runCommand

, common-updater-scripts, withOpenASAR ? false }:

let

  disableBreakingUpdates = runCommand "disable-breaking-updates.py"

    {

      pythonInterpreter = "${python3.interpreter}";

      configDirName = lib.toLower binaryName;

    } ''

    mkdir -p $out/bin

    cp ${./disable-breaking-updates.py} $out/bin/disable-breaking-updates.py

    substituteAllInPlace $out/bin/disable-breaking-updates.py

    chmod +x $out/bin/disable-breaking-updates.py

  '';

in

stdenv.mkDerivation rec {

  inherit pname version src meta;

        "''${gappsWrapperArgs[@]}" \

        --add-flags "\''${NIXOS_OZONE_WL:+\''${WAYLAND_DISPLAY:+--ozone-platform-hint=auto --enable-features=WaylandWindowDecorations}}" \

        --prefix XDG_DATA_DIRS : "${gtk3}/share/gsettings-schemas/${gtk3.name}/" \

        --prefix LD_LIBRARY_PATH : ${libPath}:$out/opt/${binaryName}

        --prefix LD_LIBRARY_PATH : ${libPath}:$out/opt/${binaryName} \

        --run "${lib.getExe disableBreakingUpdates}"

    ln -s $out/opt/${binaryName}/${binaryName} $out/bin/

    # Without || true the install would fail on case-insensitive filesystems

    mimeTypes = [ "x-scheme-handler/discord" ];

  };

  passthru.updateScript = writeScript "discord-update-script" ''

  passthru = {

    # make it possible to run disableBreakingUpdates standalone

    inherit disableBreakingUpdates;

    updateScript = writeScript "discord-update-script" ''

      #!/usr/bin/env nix-shell

      #!nix-shell -i bash -p curl gnugrep common-updater-scripts

      set -eou pipefail;

      version=''${version%%/*.tar.gz}

      update-source-version ${pname} "$version" --file=./pkgs/applications/networking/instant-messengers/discord/default.nix

    '';

  };

}