How to install Offen on nixOS Latest

Offen is an open-source self-hosted web analytics tool that provides transparent data privacy and compliance with data protection regulations. The following tutorial will guide you through the process of installing Offen on nixOS latest.

1. System Requirements

Before installing Offen, make sure that your nixOS system meets the following requirements:

nixOS Latest: Offen officially supports nixOS latest.
Node.js and npm: Make sure Node.js v12.0.0 or later, and npm v6 or later are installed on your system.

2. Install Offen

To install Offen on nixOS latest, follow these steps:

First, update the system packages by running the following command:
```
sudo nix-channel --update && sudo nixos-rebuild switch
```
Next, add Offen to your nixOS configuration file. Assuming you have a custom configuration, open it using:
```
sudo vi /etc/nixos/configuration.nix
```
Then, add Offen to the list of environment.systemPackages as follows:
```
environment.systemPackages = with pkgs; [
  offen
  # other packages here
];
```
Save the file and exit the editor.
Finally, rebuild your nixOS installation to install Offen:
```
sudo nixos-rebuild switch
```
This process may take some time depending on your internet speed.

3. Configure Offen

Once you have installed Offen, you need to configure it. Follow these steps:

Create a configuration file for Offen:

sudo vi /etc/offen/config.json

Edit the file and add the following configuration:

{
  "cors": {
    "allowedOrigins": ["https://yourdomain.com"]
  },
  "database": {
    "type": "sqlite",
    "name": "/var/lib/offen/db.sqlite3"
  }
}

Replace https://yourdomain.com with your actual domain name.

Start the Offen server:
```
sudo systemctl start offen
```

You have now successfully installed and configured Offen on your nixOS latest system. You can access the Offen dashboard by navigating to https://yourdomain.com:3000 on your web browser.