add kopia module

1 files changed, 50 insertions, 0 deletions

diff --git a/modules/backup/default.nix b/modules/backup/default.nix
new file mode 100644
index 0000000..ed319f2
--- /dev/null
+++ b/modules/backup/default.nix
@@ -0,0 +1,50 @@
+{
+  lib,
+  pkgs,
+  ...
+}:
+let
+  instanceType = lib.types.submodule {
+    options = {
+      enable = lib.mkEnableOption "Enable Kopia instance";
+      user = lib.mkOption {
+        type = lib.types.str;
+        default = "root";
+        description = "User under which the Kopia instance runs.";
+      };
+      environmentFile = lib.mkOption {
+        type = lib.types.nullOr lib.types.path;
+        default = null;
+        description = "File containing environment variables for kopia like password.";
+      };
+    };
+  };
+  mkInstanceServices =
+    instances:
+    serviceCreator:
+    lib.pipe instances [
+      (lib.attrsets.mapAttrs' serviceCreator)
+      (lib.recursiveUpdate { })
+    ];
+in
+{
+  imports = [
+    {
+      _module.args.mkInstanceServices = mkInstanceServices;
+      imports = [
+        ./repositories.nix
+        ./snapshot.nix
+        ./policy.nix
+        ./web.nix
+      ];
+    }
+  ];
+
+  options.services.kopia = {
+    enable = lib.mkEnableOption "Enable Kopia backup";
+    instances = lib.mkOption {
+      type = lib.types.attrsOf instanceType;
+      default = { };
+    };
+  };
+}