not able to install on NixOS

[turbotimon]

I tried all the possibilities on the README

The easiest method to try is by installing directly:

$ nix-env -i -f https://github.com/vlaci/openconnect-sso/archive/master.tar.gz
installing 'python3.11-openconnect-sso-0.8.1'
trace: warning: `pythonForBuild` (from `python*`) has been renamed to `pythonOnBuildForHost`
trace: warning: `pythonForBuild` (from `python*`) has been renamed to `pythonOnBuildForHost`

RAM gets completely full (32GB), nothing happens..

An overlay is also available to use in nix expressions:
My shell.nix looks like:

# shell.nix
let
  openconnectOverlay = import (builtins.fetchTarball "https://github.com/vlaci/openconnect-sso/archive/master.tar.gz") + "/overlay.nix";
  pkgs = import <nixpkgs> { overlays = [ openconnectOverlay ]; };
in
pkgs.mkShell {
  # Now pkgs.openconnect-sso will be available in the shell environment.
  buildInputs = [ pkgs.openconnect-sso ];
}

Same error and behaviour like above

I also tried pipx but that does not work on nix because of PyQt6 can't be installed the normal way.

Anyone can help to fix this?

NixOS Version 24.05

[jkenda]

I'm getting in the same situation with the nix-env method but with the second method I actually get a build error:

error:
       … while calling the 'derivationStrict' builtin

         at /builtin/derivation.nix:9:12: (source not available)

       … while evaluating derivation 'nix-shell'
         whose name attribute is located at /nix/store/wcfpskhg6pnwhxdyjaranxmz2h7310j8-nixos-24.05/nixos/pkgs/stdenv/generic/make-derivation.nix:333:7

       … while evaluating attribute 'buildInputs' of derivation 'nix-shell'

         at /nix/store/wcfpskhg6pnwhxdyjaranxmz2h7310j8-nixos-24.05/nixos/pkgs/stdenv/generic/make-derivation.nix:380:7:

          379|       depsHostHost                = elemAt (elemAt dependencies 1) 0;
          380|       buildInputs                 = elemAt (elemAt dependencies 1) 1;
             |       ^
          381|       depsTargetTarget            = elemAt (elemAt dependencies 2) 0;

       error: poetry2nix is now maintained out-of-tree. Please use https://github.com/nix-community/poetry2nix/

My NixOS version is also 24.05.