Describe the bug

Building of tdesktop-2.2.0 (Telegram Desktop) on my NixOS unstable system fails with the message:

g++: error: unrecognized command line option '-Xarch_x86_64'; did you mean '-march=x86-64'?

Notify maintainers

@primeos @abbradar

Metadata

• system: "x86_64-linux"
• host os: Linux 5.7.12, NixOS, 20.09.git.4254de4a41f (Nightingale)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.3.7
• channels(root): "nixos-20.09pre237279.8e2b14aceb1"
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

Maintainer information:

# a list of nixpkgs attributes affected by the problem
attribute: tdesktop
# a list of nixos modules affected by the problem
module: