Example of a custom package for your configuration.nix

jetbrains-toolbox.nix

{ pkgs, stdenv, fetchurl, ... }:
let
  name = "jetbrains-toolbox";
  version = "1.16.6319";
    #version = "1.18.7455";
  sha256 = "4e6f333839af8330a09d9d6fdcd6a635c9ca1f0ae239d8f268249dbd095ca880";

  jetbrains-toolbox-src = stdenv.mkDerivation {
    name = "${name}-src";

    src = fetchurl {
        url = "https://download.jetbrains.com/toolbox/${name}-${version}.tar.gz";
        inherit sha256;
    };

    installPhase = ''
        #mkdir -p $out/bin
        cp jetbrains-toolbox $out
    '';
  };

  jetbrains-toolbox-f = extraPkgs: pkgs.appimageTools.wrapType2 {
    inherit name;

    src = jetbrains-toolbox-src;

    extraPkgs = pkgs: with pkgs; [
      libcef
    ] ++ extraPkgs;

    meta = with stdenv.lib; {
      description = "A toolbox to manage JetBrains products";
      longDescription = ''
      The JetBrains Toolbox lets you install and manage JetBrains Products in muiltiple versions.
      '';
      homepage = "https://www.jetbrains.com/toolbox/";
      platforms = platforms.all;
    };
  };
  makeWithExtraPackages = f: origArgs:
    let origRes = f origArgs;
    in origRes // { withExtraPkgs = newArgs: (f  newArgs); };

in makeWithExtraPackages jetbrains-toolbox-f []

newest-version.sh

#!/usr/bin/env bash
# Reference: https://github.com/nagygergo/jetbrains-toolbox-install/blob/master/jetbrains-toolbox.sh

TOOLBOX_URL=$(curl --silent 'https://data.services.jetbrains.com//products/releases?code=TBA&latest=true&type=release' \
    -H 'Origin: https://www.jetbrains.com' \
    -H 'Accept-Encoding: gzip, deflate, br' \
    -H 'Accept-Language: en-US,en;q=0.8' \
    -H 'Accept: application/json, text/javascript, */*; q=0.01' \
    -H 'Referer: https://www.jetbrains.com/toolbox/download/' \
    -H 'Connection: keep-alive' \
    -H 'DNT: 1' \
    --compressed \
  | grep -Po '"linux":.*?[^\\]",' \
  | awk -F ':' '{print $3,":"$4}'| sed 's/[", ]//g')

echo ${TOOLBOX_URL}
curl -sL ${TOOLBOX_URL}.sha256

packages-module.nix

# This is a module.
# Import it from your configuration.nix
{ pkgs, config, ... }:
{
  environment.systemPackages = with pkgs; [
    # make toolbox depend on fontPackages to use all installed fonts
    (jetbrains-toolbox.withExtraPkgs config.fonts.fontconfig.confPackages)
  ];

  nixpkgs.config.packageOverrides = pkgs: {
    jetbrains-toolbox = pkgs.callPackage ./jetbrains-toolbox {};
  };
}

Unfortunately this has some massive problems... first and foremost it is an old toolbox version from like 9 month ago, I think. After that they changed something and the above doesn't work... I wanted to look into this again, but I didn't yet...

I was about to comment that ! Indeed, I can install the package but I'm unable to run it.

There is stuff that is missing in the env, I was also not able to fix... for example you cannot use git command in an installed intellij terminal/started program, because certain ssl certificates are missing from the env's /etc/certs/.

This is so sad.

I guess such things are massively slowing down the adoption of Nixos.

I guess such things are massively slowing down the adoption of Nixos.

Yeah, nixos is a great idea, I really mean that. But the problem is that all the software is developed for a system that works different... and NixOS has to work with that... Still I will continue using it...

I've spent some time with this problem and got some additional piece of the puzzle

$ APPIMAGE_DEBUG_EXEC=bash ./result/bin/jetbrains-toolbox -d

this helped me to jump into the AppImage and manually running ./jetbrains-toolbox returned

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

this looks like some missing java libraries
but it might be an outcome of me not knowing what I'm doing

How about running it in a steam env ? I think it would work.