nixfiles/nixos/modules/secrets.nix

39 lines
1.4 KiB
Nix

{ lib, pkgs, config, secretsPath, ... }:
let
inherit (builtins) mapAttrs;
inherit (lib) mkMerge mkIf mkDefault;
inherit (lib.my) mkOpt';
cfg = config.my.secrets;
in
{
options.my.secrets = with lib.types; {
vmKeyPath = mkOpt' str "/tmp/xchg/dev.key" "Path to dev key when in a dev VM.";
key = mkOpt' (nullOr str) null "Public key that secrets for this system should be encrypted for.";
files = mkOpt' (attrsOf unspecified) { } "Secrets to decrypt with agenix.";
};
config = mkMerge [
{
age = {
secretsDir = mkDefault "/run/secrets";
secrets = mapAttrs (f: opts: {
file = "${secretsPath}/${f}.age";
} // opts) cfg.files;
# agenix sets this as a default but adding any custom extras will _replace_ the list (different priority)
identityPaths =
mkIf config.services.openssh.enable
(map
# Use the persit dir to grab the keys instead, otherwise they might not be ready. We can't really make
# agenix depend on impermanence, since users depends on agenix (to decrypt passwords) and impermanence
# depends on users
(e: let pDir = config.my.tmproot.persistence.dir; in if pDir != null then "${pDir}${e.path}" else e.path)
(lib.filter (e: e.type == "rsa" || e.type == "ed25519") config.services.openssh.hostKeys));
};
}
(mkIf config.my.build.isDevVM {
age.identityPaths = [ cfg.vmKeyPath ];
})
];
}