feat: Encryption

modules/home/gpg.nix

@@ -0,0 +1,30 @@
+{ config, lib, pkgs, ... }:
+
+let cfg = config.sydnix.gpg;
+    mutableSymlink = config.lib.file.mkOutOfStoreSymlink;
+in {
+  options = {
+    sydnix.gpg = {
+      enable = lib.mkEnableOption "GnuPG";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.gpg = {
+      enable = true;
+    };
+
+    services.gpg-agent = {
+      enable = true;
+      enableSshSupport = true;
+      enableBashIntegration = config.programs.bash.enable;
+      extraConfig =
+        "allow-loopback-pinentry"
+        + lib.optionalString
+          config.programs.emacs.enable "\nallow-emacs-pinentry";
+    };
+
+    home.file."private-keys/gpg/crumb".source =
+      mutableSymlink "/persist/private-keys/gpg/${config.home.username}";
+  };
+}