now using flake-parts; refactored nixosConfigurations; using hm standalone

hosts/alexandria/radicale.nix

@@ -0,0 +1,17 @@
+{ ... }:
+
+{
+  services.radicale = {
+    enable = true;
+    settings = {
+      server = {
+        hosts = [ "/run/radicale/radicale.sock" ];
+      };
+      auth = {
+        type = "htpasswd";
+        htpasswd_filename = "/etc/radicale/users";
+        htpasswd_encryption = "bcrypt";
+      };
+    };
+  };
+}