Migrate to Snowfall (#1)

Reviewed-on: #1
Co-authored-by: Evan Reichard <evan@reichard.io>
Co-committed-by: Evan Reichard <evan@reichard.io>

modules/nixos/security/sops/default.nix

@@ -0,0 +1,31 @@
+{ config, lib, namespace, ... }:
+let
+  inherit (lib.${namespace}) mkOpt;
+
+  cfg = config.${namespace}.security.sops;
+in
+{
+  options.${namespace}.security.sops = {
+    enable = lib.mkEnableOption "sops";
+    defaultSopsFile = mkOpt lib.types.path null "Default sops file.";
+    sshKeyPaths = mkOpt (with lib.types; listOf path) [
+      # "/etc/ssh/ssh_host_ed25519_key"
+    ] "SSH Key paths to use.";
+  };
+
+  config = lib.mkIf cfg.enable {
+    sops = {
+      inherit (cfg) defaultSopsFile;
+
+      age = {
+        inherit (cfg) sshKeyPaths;
+
+        keyFile = "${config.users.users.${config.${namespace}.user.name}.home}/.config/sops/age/keys.txt";
+      };
+    };
+
+    sops.secrets.builder_ssh_key = {
+      sopsFile = lib.snowfall.fs.get-file "secrets/default.yaml";
+    };
+  };
+}