nixos/haste-server: add

nixos/modules/module-list.nix

···
   ./services/display-managers/greetd.nix
   ./services/editors/emacs.nix
   ./services/editors/infinoted.nix
+  ./services/editors/haste.nix
   ./services/finance/odoo.nix
   ./services/games/asf.nix
   ./services/games/crossfire-server.nix

nixos/modules/services/editors/haste.nix

···
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  pkg = pkgs.haste-server;
+  cfg = config.services.haste-server;
+
+  format = pkgs.formats.json {};
+in
+{
+  options.services.haste-server = {
+    enable = mkEnableOption "haste-server";
+    openFirewall = mkEnableOption "firewall passthrough for haste-server";
+
+    settings = mkOption {
+      description = ''
+        Configuration for haste-server.
+        For documentation see <link xlink:href="https://github.com/toptal/haste-server#settings">project readme</link>
+      '';
+      type = format.type;
+    };
+  };
+
+  config = mkIf (cfg.enable) {
+    networking.firewall.allowedTCPPorts = mkIf (cfg.openFirewall) [ cfg.settings.port ];
+
+    services.haste-server = {
+      settings = {
+        host = mkDefault "::";
+        port = mkDefault 7777;
+
+        keyLength = mkDefault 10;
+        maxLength = mkDefault 400000;
+
+        staticMaxAge = mkDefault 86400;
+        recompressStaticAssets = mkDefault false;
+
+        logging = mkDefault [
+          {
+            level = "verbose";
+            type = "Console";
+            colorize = true;
+          }
+        ];
+
+        keyGenerator = mkDefault {
+          type = "phonetic";
+        };
+
+        rateLimits = {
+          categories = {
+            normal = {
+              totalRequests = mkDefault 500;
+              every = mkDefault 60000;
+            };
+          };
+        };
+
+        storage = mkDefault {
+          type = "file";
+        };
+
+        documents = {
+          about = mkDefault "${pkg}/share/haste-server/about.md";
+        };
+      };
+    };
+
+    systemd.services.haste-server = {
+      wantedBy = [ "multi-user.target" ];
+      requires = [ "network.target" ];
+      after = [ "network.target" ];
+
+      serviceConfig = {
+        User = "haste-server";
+        DynamicUser = true;
+        StateDirectory = "haste-server";
+        WorkingDirectory = "/var/lib/haste-server";
+        ExecStart = "${pkg}/bin/haste-server ${format.generate "config.json" cfg.settings}";
+      };
+
+      path = with pkgs; [ pkg coreutils ];
+    };
+  };
+}