depot/ops/nixos/lib/home-manager/ext.nix

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{ config, lib, pkgs, ... }:
let
caKnownHostsFile = pkgs.writeText "ca-known-hosts" ''
@cert-authority * ${builtins.readFile ../../../secrets/server-ca.pub}
'';
in {
programs.ssh = {
extraConfig = ''
CanonicalizeHostname yes
CanonicalDomains int.as205479.net as205479.net
CanonicalizeMaxDots 0
CanonicalizePermittedCNAMEs *.lukegb.com:*.as205479.net,*.int.as205479.net *.lukegb.dev:*.as205479.net,*.int.as205479.net *.zxcvbnm.ninja:*.as205479.net,*.int.as205479.net
'';
userKnownHostsFile = "~/.ssh/known_hosts ${caKnownHostsFile}";
};
}