feat(hosts/server): adding the secrets to the configuration

hosts/global.nix

@@ -2,6 +2,7 @@
   config,
   pkgs,
   lib,
+  inputs,
   ...
 }:
 
@@ -62,11 +63,13 @@
     ];
   };
 
+  environment.variables.AGE_KEY_FILE = "/root/.config/age/keys.txt";
   programs = {
     zsh.enable = true;
   };
 
   environment.systemPackages = with pkgs; [
+    age
     bat
     cairo
     dconf
@@ -102,5 +105,7 @@
     xsel
     yarn
     zsh
+  ] ++ [
+    inputs.agenix.packages.${pkgs.system}.agenix
   ];
 }

hosts/server/configuration.nix

@@ -10,6 +10,7 @@
   imports = [
     ../global.nix
     ./hardware-configuration.nix
+    ./secrets.nix
     ../../modules/games.nix
     ../../services/forty_two.nix
     ../../services/discord.nix

hosts/server/secrets.nix

@@ -0,0 +1,20 @@
+{ config, pkgs, inputs, ... }:
+{
+  imports = [ inputs.agenix.nixosModules.default ];
+
+  age.identityPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
+
+  age.secrets."mailjet-user" = {
+    file = ../../secrets/mailjet-user.age;
+    owner = "root";
+    group = "root";
+    mode  = "0400";
+  };
+
+  age.secrets."mailjet-pass" = {
+    file = ../../secrets/mailjet-pass.age;
+    owner = "root";
+    group = "root";
+    mode  = "0400";
+  };
+}