Cannot build searx anymore

[cyplo]

Describe the bug
Package searx stopped building, not sure when.

Getting

ERROR: Could not find a version that satisfies the requirement requests[socks]==2.22.0 (from searx==0.16.0) (from versions: none)
ERROR: No matching distribution found for requests[socks]==2.22.0 (from searx==0.16.0)

To Reproduce
Steps to reproduce the behavior:

1. nix-shell -p searx on unstable

Expected behavior
The package builds

Notify maintainers

@matejc @fpletz @globin @danielfullmer

Metadata
Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

 - system: `"x86_64-linux"`
 - host os: `Linux 5.6.15, NixOS, 20.09pre228453.dcb64ea42e6 (Nightingale)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.3.6`
 - channels(cyryl): `"home-manager, unstable-20.09pre223023.fce7562cf46"`
 - channels(root): `"nixos-20.09pre228453.dcb64ea42e6"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`