diff --git a/mkdocs.yml b/mkdocs.yml
index 4a3ec96..d1de6c1 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -21,6 +21,7 @@ nav:
         - via OS:
             - 'installing/os/index.md'
             - 'Ubuntu (Recommended)': 'installing/os/ubuntu.md'
+            - 'NixOS (very easy)': 'installing/os/nixos.md'
             - 'Arch Linux': 'installing/os/arch.md'
             - 'CentOS': 'installing/os/centos.md'
             - 'installing/os/debian.md'
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..e6790be
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,42 @@
+{pkgs ? import <nixpkgs> {}}:
+pkgs.mkShell {
+  buildInputs = [
+    pkgs.git
+    pkgs.nodejs_20 # Node.js for npm and compile.js
+    (pkgs.python3.withPackages (ps:
+      with ps; [
+        mkdocs
+        mkdocs-material
+        pillow # Required for mkdocs-material[imaging]
+        cairosvg # Required for mkdocs-material[imaging]
+      ]))
+  ];
+
+  shellHook = ''
+    echo "Setting up environment for NodeBB documentation..."
+
+    # Create symbolic link only if it doesn't exist
+    if [ ! -e docs ]; then
+      ln -sf ./src/docs docs
+      echo "Created symbolic link: docs -> src/docs"
+    else
+      echo "Symbolic link 'docs' already exists or is not needed, skipping"
+    fi
+
+    # Run npm install if node_modules is missing
+    if [ ! -d node_modules ]; then
+      npm install
+      echo "Node.js dependencies installed"
+    else
+      echo "Node.js dependencies already installed, skipping"
+    fi
+
+    # Run the compile script
+    node src/compile.js && echo "Compilation completed successfully" || {
+      echo "Error: Compilation failed"
+      exit 1
+    }
+
+    echo "Environment ready. Run 'mkdocs serve' to preview the documentation or 'mkdocs build' to generate the static site."
+  '';
+}
diff --git a/src/docs/installing/os/nixos.md b/src/docs/installing/os/nixos.md
new file mode 100644
index 0000000..f9b8230
--- /dev/null
+++ b/src/docs/installing/os/nixos.md
@@ -0,0 +1,259 @@
+NixOS
+=====
+
+MySQL
+-----
+
+Create file `shell.nix` with the following content (adjust the variables as needed):
+```nix
+{
+  pkgs ? import <nixpkgs> { },
+}:
+let
+  # adjust the following variables as needed
+  # Define NodeBB version and repository
+  nodebbRepo = "https://github.com/MBanucu/NodeBB.git";
+  nodebbBranch = "mysql-backup2"; # MySQL branch
+
+  # Define NodeBB admin credentials
+  nodebbAdminUsername = "admin"; # Set your admin username
+  nodebbAdminPassword = "admin_password"; # Set your admin password
+  nodebbAdminEmail = "your_nodebb_admin_email_here@gmail.com"; # Set your admin email
+
+  # Define MySQL database credentials
+  mysqlUsername = "nodebb_user"; # MySQL username for NodeBB
+  mysqlPassword = "nodebb_user_password"; # MySQL password for NodeBB
+  mysqlDatabase = "nodebb"; # MySQL database for NodeBB
+
+  development = true; # Set to false for non-development mode
+
+  MYSQL_HOME = "${builtins.getEnv "PWD"}/mysql";
+  MYSQL_DATADIR = "${MYSQL_HOME}/data";
+  MYSQL_UNIX_PORT = "${MYSQL_HOME}/mysql.sock";
+  MYSQL_PID_FILE = "${MYSQL_HOME}/mysql.pid";
+
+  JSON_CONFIG_TEST = ''
+    {
+      "test_database": {
+        "socketPath": "${MYSQL_UNIX_PORT}",
+        "username": "${mysqlUsername}_test",
+        "password": "${mysqlPassword}",
+        "database": "${mysqlDatabase}_test"
+      }
+    }
+  '';
+
+  UUID_SECRET = builtins.replaceStrings [ "\n" ] [ "" ] (
+    builtins.readFile (
+      pkgs.runCommand "generate-uuid" { } ''
+        ${pkgs.util-linux}/bin/uuidgen > $out
+      ''
+    )
+  );
+
+  JSON_CONFIG = ''
+    {
+      "url": "http://localhost:4567",
+      "port": "4567",
+      "secret": "${UUID_SECRET}",
+      "database": "mysql",
+      "mysql:host": "127.0.0.1",
+      "mysql:port": "3306",
+      "mysql:socketPath": "${MYSQL_UNIX_PORT}",
+      "mysql:username": "${mysqlUsername}",
+      "mysql:password": "${mysqlPassword}",
+      "mysql:database": "${mysqlDatabase}",
+      "admin:username": "${nodebbAdminUsername}",
+      "admin:password": "${nodebbAdminPassword}",
+      "admin:password:confirm": "${nodebbAdminPassword}",
+      "admin:email": "${nodebbAdminEmail}"
+    }
+  '';
+
+  JSON_VSCODE_TASKS = ''
+    {
+      "version": "2.0.0",
+      "tasks": [
+        {
+          "label": "Run grunt",
+          "type": "shell",
+          "command": "node ./node_modules/.bin/grunt",
+          "runOptions": {
+            "runOn": "folderOpen"
+          }
+        }
+      ]
+    }
+  '';
+
+  JSON_VSCODE_SETTINGS = ''
+    {
+      "mochaExplorer.env": {
+        "CI": "true"
+      }
+    }
+  '';
+
+  masterOverlays = [
+    (
+      self: super:
+      let
+        nix-vscode-extensions = import (
+          fetchTarball "https://github.com/nix-community/nix-vscode-extensions/archive/master.tar.gz"
+        );
+        nixpkgsMaster =
+          import
+            (builtins.fetchTarball {
+              url = "https://github.com/NixOS/nixpkgs/archive/master.tar.gz";
+            })
+            {
+              config.allowUnfree = true;
+              overlays = [
+                nix-vscode-extensions.overlays.default
+              ];
+            };
+      in
+      {
+        # nodejs_20 version is 20.18 of NixOS 24.11 but we need 20.19 for require(ESM)
+        nodejs_20 = nixpkgsMaster.nodejs_20;
+        vscode = (
+          nixpkgsMaster.vscode-with-extensions.override {
+            vscode = nixpkgsMaster.vscode;
+            vscodeExtensions = with nixpkgsMaster.vscode-marketplace; [
+              ms-vscode.test-adapter-converter
+              hbenl.vscode-test-explorer
+              hbenl.vscode-mocha-test-adapter
+
+              jnoortheen.nix-ide
+            ];
+          }
+        );
+      }
+    )
+  ];
+  pkgsMaster = import <nixpkgs> { overlays = masterOverlays; };
+in
+pkgs.mkShell {
+  name = "nodebb-env";
+
+  buildInputs =
+    with pkgs;
+    [
+      pkgsMaster.nodejs_20 # NodeBB recommends Node.js 20.19 or higher
+      git # For cloning NodeBB
+      mysql80 # MySQL 8.0, because MariaDB doesn't work right now
+      jq # For JSON manipulation
+    ]
+    ++ (
+      if development then
+        [
+          nodePackages.grunt-cli
+          nixfmt-rfc-style
+          pkgsMaster.vscode
+        ]
+      else
+        [ ]
+    );
+
+  shellHook = ''
+    # Set up environment variables
+    export MYSQL_HOME="${MYSQL_HOME}"
+    export MYSQL_DATADIR="${MYSQL_DATADIR}"
+    export MYSQL_UNIX_PORT="${MYSQL_UNIX_PORT}"
+    export MYSQL_PID_FILE="${MYSQL_PID_FILE}"
+    alias mysql='mysql -u root'
+
+    # Set up MySQL 8.0
+    if [ ! -d "${MYSQL_HOME}" ]; then
+      echo "Initializing MySQL 8.0..."
+      mkdir -p "${MYSQL_HOME}"
+      mysqld --initialize-insecure --datadir="${MYSQL_DATADIR}" --basedir="${pkgs.mysql80}" \
+        --pid-file="${MYSQL_PID_FILE}"
+    fi
+
+    # Start MySQL daemon
+    echo "Starting MySQL 8.0..."
+    mysqld --no-defaults --skip-networking --datadir="${MYSQL_DATADIR}" \
+      --pid-file="${MYSQL_PID_FILE}" --socket="${MYSQL_UNIX_PORT}" \
+      2> "${MYSQL_HOME}/mysql.log" &
+    MYSQL_PID=$!
+
+    # Wait for MySQL to start
+    echo "Waiting for MySQL to be ready..."
+    while ! mysqladmin ping --socket="${MYSQL_UNIX_PORT}" --silent; do
+      sleep 1
+    done
+
+    # Create NodeBB database and user
+    echo "Setting up NodeBB database..."
+    mysql --socket="${MYSQL_UNIX_PORT}" -u root <<EOF
+    CREATE DATABASE IF NOT EXISTS ${mysqlDatabase};
+    CREATE USER IF NOT EXISTS '${mysqlUsername}'@'localhost' IDENTIFIED BY '${mysqlPassword}';
+    GRANT ALL PRIVILEGES ON ${mysqlDatabase}.* TO '${mysqlUsername}'@'localhost';
+    FLUSH PRIVILEGES;
+    EOF
+
+    if [ ${toString development} ]; then
+      echo "setting up test database..."
+      mysql --socket="${MYSQL_UNIX_PORT}" -u root <<EOF
+      CREATE DATABASE IF NOT EXISTS ${mysqlDatabase}_test;
+      CREATE USER IF NOT EXISTS '${mysqlUsername}_test'@'localhost' IDENTIFIED BY '${mysqlPassword}';
+      GRANT ALL PRIVILEGES ON ${mysqlDatabase}_test.* TO '${mysqlUsername}_test'@'localhost';
+      FLUSH PRIVILEGES;
+    EOF
+
+      echo "setting up test database done"
+    fi
+
+    # Clean up MySQL on shell exit
+    finish() {
+      echo "Shutting down MySQL..."
+      mysqladmin -u root --socket="${MYSQL_UNIX_PORT}" shutdown
+    }
+    trap finish EXIT
+
+    # Clone NodeBB if not already present
+    if [ ! -d "NodeBB" ]; then
+      echo "Cloning NodeBB repository..."
+      git clone -b ${nodebbBranch} ${nodebbRepo} NodeBB
+    fi
+
+    # Navigate to NodeBB directory
+    cd NodeBB
+
+    if [ ! -d "node_modules" ]; then
+
+      if [ ${toString development} ]; then
+        echo "Writing config.json for test_database for development mode..."
+        echo '${JSON_CONFIG_TEST}' | jq . --indent 4 > config.json
+
+        echo "setting up grunt task for VSCode for development mode..."
+        mkdir -p .vscode
+        echo '${JSON_VSCODE_TASKS}' | jq . --indent 4 > .vscode/tasks.json
+
+        echo "setting up Mocha Test Explorer plugin for VSCode for development mode..."
+        echo '${JSON_VSCODE_SETTINGS}' | jq . --indent 4 > .vscode/settings.json
+      fi
+
+      node ./nodebb setup '${JSON_CONFIG}'
+
+      if [ ${toString development} ]; then
+        echo "Running npm install for development mode..."
+        npm install
+      fi
+    fi
+
+    if [ ${toString development} ]; then
+      code .
+    fi
+
+    echo "NodeBB environment is set up!"
+  '';
+}
+```
+Run
+```
+nix-shell
+```
+in the directory where `shell.nix` is located.
+Leave the nix shell open or else everything closes.