Update NixOS documentation to use package/module in nixpkgs, rather t…

…han a custom one

reposilite-site/data/guides/infrastructure/nixos.md

@@ -4,105 +4,22 @@ title: NixOS
 community: true
 ---
 
-You can install Reposilite on NixOS using the following configuration.
+[nixpkgs](https://github.com/NixOS/nixpkgs) contains a package and NixOS module for Reposilite.
 
-Create a package expression in `/etc/nixos/reposilite-bin.nix` file (adjust JDK package 
-and JVM properties to your needs):
-
-```nix
-{ pkgs, ... }:
-let
-  jdk = pkgs.openjdk17_headless;
-  stdenv = pkgs.stdenv;
-in
-stdenv.mkDerivation rec {
-  pname = "reposilite-bin";
-  version = "3.3.2";
-
-  jar = builtins.fetchurl {
-    url="https://maven.reposilite.com/releases/com/reposilite/reposilite/${version}/reposilite-${version}-all.jar";
-    sha256="369345847c98033ff2546d76e74702b859b41d05135997b4740d8e925f361a85";
-  };
-
-  dontUnpack = true;
-
-  nativeBuildInputs = [ pkgs.makeWrapper ];
-  installPhase = ''
-    runHook preInstall
-    makeWrapper ${jdk}/bin/java $out/bin/reposilite \
-      --add-flags "-Xmx40m -jar $jar" \
-      --set JAVA_HOME ${jdk}
-    runHook postInstall
-  '';
-}
-```
-
-Put the Reposilite configuration in `/etc/nixos/reposilite.nix` (adjust `cfg.user`, `cfg.group` 
-etc. to your needs):
+You can enable and configure it via `services.reposilite` in your NixOS configuration (e.g. `/etc/nixos/configuration.nix`):
 
 ```nix
 { config, pkgs, ... }:
-let 
-  reposilite = (import ./reposilite-bin.nix { inherit pkgs; }); 
-  cfg = { 
-    user = "reposilite"; 
-    group = "reposilite"; 
-    home = "/var/lib/reposilite"; 
-    pkg = reposilite; 
-    port = 8084;
-  };
-in
 {
-  environment.systemPackages = [
-    cfg.pkg
-  ];
-
-  users.groups.${cfg.group} = {
-    name = cfg.group;
-  };
-
-  users.users.${cfg.user} = {
-    isSystemUser = true;
-    group = cfg.group;
-    home = cfg.home;
-    createHome = true;
-  };
-
-  systemd.services."reposilite" = {
-    description = "Reposilite - Maven repository";
-
-    wantedBy = [ "multi-user.target" ];
-
-    script = "${cfg.pkg}/bin/reposilite --working-directory ${cfg.home} --port ${toString cfg.port}";
+  # ...
 
-    serviceConfig = {
-      User = cfg.user;
-      Group = cfg.group;
-    };
+  services.reposilite = {
+    enable = true;
+    openFirewall = false;
+    tokens = [
+      "tokenName:tokenSecret" # It is recommended to use a secret management strategy such as sops-nix here.
+    ];
+    settings = { }; # Add settings that would usually go in the Reposilite config (`reposilite.cdn`) here, e.g. `sslEnabled = true`
   };
 }
 ```
-Add Reposilite to NixOS e.g. in `/etc/nixos/configuration.nix`:
-
-```nix
-{ config, pkgs, ... }:
-{
-  imports = [
-    # ...
-    ./reposilite.nix
-  ];
-  # ...
-}
-```
-
-### Reposilite CLI
-
-The configuration above adds Reposilite to the system path, which may be needed to configure 
-Reposilite. For example:
-
-```bash
-systemctl stop reposilite.service
-runuser -u reposilite -g reposilite -- reposilite --working-directory /var/lib/reposilite --port 8084
-```
-
-When started from a terminal, Reposilite's console can be used to add users and tokens.