Backup roam directory with unison

hmModules/unison/default.nix

@@ -0,0 +1,24 @@
+{ pkgs, lib, ... }:
+{
+  home.packages = [ pkgs.unison ];
+  services.unison = {
+    enable = true;
+    pairs = {
+      "roam" = {
+        roots = [
+          # Pair of roots to synchronize
+          "/home/ccr/roam"
+          "ssh://root@sisko.wg.aciceri.dev//mnt/hd/roam"
+        ];
+        commandOptions = {
+          auto = "true";
+          batch = "true";
+          log = "false";
+          repeat = "watch";
+          sshcmd = lib.getExe pkgs.openssh;
+          ui = "text";
+        };
+      };
+    };
+  };
+}

hosts/picard/default.nix

@@ -98,6 +98,7 @@
       "pantalaimon"
       "moonlight"
       "gimp"
+      "unison"
     ];
     extraGroups = [ "plugdev" ];
     backupPaths = [ ];

hosts/sisko/default.nix

@@ -113,6 +113,7 @@
 
   environment.systemPackages = with pkgs; [
     cifs-utils
+    unison
   ];
 
   powerManagement.scsiLinkPolicy = "med_power_with_dipm";