Add msmtp to send notifications via email

Reviewed-by: Aleix Roca Nonell <aleix.rocanonell@bsc.es>

m/hut/configuration.nix

@@ -14,6 +14,7 @@
     ./nix-serve.nix
     ./public-inbox.nix
     ./gitea.nix
+    ./msmtp.nix
     #./pxe.nix
   ];
 

m/hut/msmtp.nix

@@ -0,0 +1,24 @@
+{ config, lib, ... }:
+{
+  age.secrets.jungleRobotPassword = {
+    file = ../../secrets/jungle-robot-password.age;
+    group = "gitea";
+    mode = "440";
+  };
+
+  programs.msmtp = {
+    enable = true;
+    accounts = {
+      default = {
+        auth = true;
+        tls = true;
+        tls_starttls = false;
+        port = 465;
+        host = "mail.bsc.es";
+        user = "jungle-robot";
+        passwordeval = "cat ${config.age.secrets.jungleRobotPassword.path}";
+        from = "jungle-robot@bsc.es";
+      };
+    };
+  };
+}