diff --git a/.gitignore b/.gitignore
index dc7d1372..b555a30c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 Rocket.toml
 Revolt.*.toml
+compose.override.yml
 
 target
 .data
diff --git a/README.md b/README.md
index ea8cab84..c480340f 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ As a heads-up, the development environment uses the following ports:
 | MinIO                     |     14009      |
 | Maildev                   | 14025<br>14080 |
 | Revolt Web App            |     14701      |
-| RabbitMQ                  |  5672<br>15672 |
+| RabbitMQ                  | 5672<br>15672  |
 | `crates/delta`            |     14702      |
 | `crates/bonfire`          |     14703      |
 | `crates/services/autumn`  |     14704      |
@@ -91,6 +91,38 @@ If you'd like to change anything, create a `Revolt.overrides.toml` file and spec
 > proxy = "https://abc@your.sentry/1"
 > ```
 
+> [!TIP]
+> If you have port conflicts on common services, you can try the following:
+>
+> ```yaml
+> # compose.override.yml
+> services:
+>   redis:
+>     ports: !override
+>       - "14079:6379"
+>
+>   database:
+>     ports: !override
+>       - "14017:27017"
+>
+>   rabbit:
+>     ports: !override
+>       - "14072:5672"
+>       - "14672:15672"
+> ```
+>
+> And corresponding Revolt configuration:
+>
+> ```toml
+> # Revolt.overrides.toml
+> [database]
+> mongodb = "mongodb://127.0.0.1:14017"
+> redis = "redis://127.0.0.1:14079/"
+>
+> [rabbit]
+> port = 14072
+> ```
+
 Then continue:
 
 ```bash
diff --git a/Revolt.toml b/Revolt.toml
index ff8827a8..47971a20 100644
--- a/Revolt.toml
+++ b/Revolt.toml
@@ -4,10 +4,13 @@
 [database]
 # MongoDB connection URL
 # Defaults to the container name specified in self-hosted
-mongodb = "mongodb://127.0.0.1:14017"
+mongodb = "mongodb://127.0.0.1:27017"
 # Redis connection URL
 # Defaults to the container name specified in self-hosted
-redis = "redis://127.0.0.1:14079/"
+redis = "redis://127.0.0.1:6379/"
+
+[rabbit]
+host = "127.0.0.1"
 
 [hosts]
 # Web locations of various services
diff --git a/default.nix b/default.nix
index 16096d50..f8736308 100644
--- a/default.nix
+++ b/default.nix
@@ -1,26 +1,10 @@
-let
-  # Pinned nixpkgs, deterministic. Last updated: 28-07-2024.
-  pkgs = import (fetchTarball("https://github.com/NixOS/nixpkgs/archive/9b34ca580417e1ebc56c4df57d8b387dad686665.tar.gz")) {};
-
-  # Rolling updates, not deterministic.
-  # pkgs = import (fetchTarball("channel:nixpkgs-unstable")) {};
-in pkgs.mkShell {
-  name = "revoltEnv";
-
-  # LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [
-  #   pkgs.gcc-unwrapped
-  #   pkgs.zlib
-  #   pkgs.glib
-  #   pkgs.libGL
-  # ];
+{ pkgs ? import <nixpkgs> {} }:
 
+pkgs.mkShell rec {
   buildInputs = [
     # Tools
     pkgs.git
 
-    # Database
-    # pkgs.mongodb
-
     # Cargo
     pkgs.cargo
     pkgs.cargo-nextest