Add secret handling

nix/modules/home/common.nix

@@ -2,6 +2,7 @@
 
 {
   imports = [
+    ./secrets.nix
     ./sh.nix
     ./tmux.nix
     ./git.nix
@@ -18,6 +19,10 @@
     yaml-language-server
     marksman
     dockerfile-language-server
+
+    # Secrets management
+    sops
+    age
   ];
 
   news.display = "silent";

nix/modules/home/secrets.nix

@@ -0,0 +1,17 @@
+{ inputs, config, ... }:
+
+{
+  imports = [
+    inputs.sops-nix.homeManagerModules.sops
+  ];
+
+  sops = {
+    defaultSopsFile = ../../secrets/secrets.yaml;
+    defaultSopsFormat = "yaml";
+
+    age = {
+      # This is the default location for the age key
+      keyFile = "${config.home.homeDirectory}/.config/sops/age/keys.txt";
+    };
+  };
+}

nix/modules/nixos/common.nix

@@ -1,6 +1,10 @@
 { config, pkgs, lib, ... }:
 
 {
+  imports = [
+    ./secrets.nix
+  ];
+
   time.timeZone = "Europe/Berlin";
   i18n.defaultLocale = "en_US.UTF-8";
 

nix/modules/nixos/secrets.nix

@@ -0,0 +1,21 @@
+{ inputs, config, ... }:
+
+{
+  imports = [
+    inputs.sops-nix.nixosModules.sops
+  ];
+
+  sops = {
+    defaultSopsFile = ../../secrets/secrets.yaml;
+    defaultSopsFormat = "yaml";
+
+    age = {
+      # This will automatically import the SSH keys as age keys
+      sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
+      # This is where the age key for sops-nix is stored
+      keyFile = "/var/lib/sops-nix/key.txt";
+      # This will generate a new age key from the SSH key if it doesn't exist
+      generateKey = true;
+    };
+  };
+}