modules: move 'services' into subfolder

modules/services/blog.nix

@@ -0,0 +1,39 @@
+# My blog setup
+{ config, lib, ... }:
+let
+  cfg = config.my.services.blog;
+  domain = config.networking.domain;
+
+  makeHostInfo = name: {
+    name = "${name}.${domain}";
+    value = "/var/www/${name}";
+  };
+
+  hostsInfo = [
+    {
+      name = domain;
+      value = "/var/www/blog";
+    }
+  ] ++ builtins.map makeHostInfo [ "cv" "dev" "key" ];
+
+  hosts = builtins.listToAttrs hostsInfo;
+
+  makeVirtualHost = with lib.attrsets;
+    name: root: nameValuePair "${name}" {
+      forceSSL = true;
+      useACMEHost = domain;
+      inherit root;
+      # Make my blog the default landing site
+      default = (name == domain);
+    };
+in
+{
+  options.my.services.blog = {
+    enable = lib.mkEnableOption "Blog hosting";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.nginx.virtualHosts = with lib.attrsets;
+      mapAttrs' makeVirtualHost hosts;
+  };
+}