fix(client): disable ssh-askpass on wsl

the curses askpass is cool but it just. doesn't work well, especially
when there are multiple tabs open in windows terminal which completely
breaks it beyond belief. so yeah, bye bye

configs/client.nix

@@ -1,4 +1,9 @@
-{ lib, pkgs, ... }:
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
 {
   imports = [
     ./common.nix
@@ -17,7 +22,8 @@
       nixd
     ];
 
-    variables.SSH_ASKPASS_REQUIRE = "prefer";
+    # disable ssh-askpass on wsl namely, to simply have a normal prompt that reads from stdin
+    variables.SSH_ASKPASS_REQUIRE = if config.programs.ssh.enableAskPassword then "prefer" else "never";
   };
 
   networking = {
@@ -31,11 +37,7 @@
 
   programs = {
     nix-ld.enable = true;
-    ssh = {
-      startAgent = true;
-      enableAskPassword = true;
-      askPassword = lib.mkOverride 1200 "${pkgs.curses-ssh-askpass}"; # see exprs/curses-ssh-askpass.nix
-    };
+    ssh.startAgent = true;
   };
 
   virtualisation.docker.enable = true;