Installing Radarr on nixOS Latest

In this tutorial, we will walk you through the process of installing Radarr, a movie management tool that automatically searches for and downloads your favorite movies, on nixOS Latest.

Prerequisites

Before we begin, you will need:

A server running nixOS Latest
Basic knowledge of Linux commands

Step 1: Install Radarr

To install Radarr, we will first need to add its nixOS package to our system's configuration.

Open a terminal.
Open the nixOS configuration file in the terminal by running the following command:
```
sudo nano /etc/nixos/configuration.nix
```
Scroll to the environment.systemPackages section and add Radarr to the list of installed packages:
```
environment.systemPackages = with pkgs; [
  # ...
  radarr
];
```
Note: The with pkgs statement imports the pkgs package collection, which is a collection of pre-written nix packages.
Save and exit the file by pressing CTRL + X, followed by Y, and finally ENTER.
Apply the new configuration to your system by running the following command:
```
sudo nixos-rebuild switch
```
Radarr should now be installed! You can start the Radarr service by running:
```
sudo systemctl start radarr.service
```
You can also enable the service to start automatically at boot time by running:
```
sudo systemctl enable radarr.service
```

Congratulations! You have successfully installed Radarr on nixOS Latest.

Step 2: Configure Radarr

After installing Radarr, you will need to configure it by accessing its web interface.

Open your web browser and navigate to http://localhost:7878 (or replace localhost with the IP address of your server if accessing remotely).
You should now see the Radarr login page. The default username and password are admin and admin respectively.
After logging in, you will be prompted to configure Radarr's settings. Follow the instructions on the screen to configure Radarr to your liking.

Note: When setting up your download client, make sure to specify the correct paths according to your system's configuration.
After completing the setup, Radarr will start scanning for movies and automatically downloading them according to your preferences.

Congratulations! You have successfully configured Radarr on nixOS Latest.