How to install Expressa on NixOS Latest

Expressa is an open-source Node.js framework that provides a boilerplate for building Node.js-based applications for web-based data-driven projects.

In this tutorial, we will guide you on how to install and set up Expressa on NixOS Latest. Expressa is available on GitHub.

Prerequisites

Before we begin, you should have the following:

A computer running the latest version of NixOS.
Basic knowledge of the terminal.

Installation Steps

Follow these steps to install Expressa on NixOS Latest:

Open your terminal and navigate to the directory of your choice.
Clone the Expressa repository by running the following command in your terminal:
```
git clone https://github.com/thomas4019/expressa.git
```
Change your directory to the freshly cloned repo by running:
```
cd expressa
```
Next, we need to ensure that we have the correct version of Node.js installed. To do this, you can use the following command:
```
nix-shell -p nodejs-16_x
```
This will open a shell with Node.js 16.x installed.
Once you have ensured that you have Node.js installed, we can install the dependencies required by Expressa. To do this, run the following command:
```
npm install
```

Next, we need to configure the Expressa application. To do this, edit the config.js file by running the following command:

nano config.js

In this file, you will need to modify the following variables to suit your project:

module.exports = {
  dbName: 'expressa-db',
  port: 3030,
  ip: '0.0.0.0',
  dbUrl: process.env.MONGO_URL || 'mongodb://localhost:27017',
  sendgridKey: '',
  auth: {
    google: {
      clientId: process.env.GOOGLE_CLIENT_ID,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET,
    },
    github: {
      clientId: process.env.GITHUB_CLIENT_ID,
      clientSecret: process.env.GITHUB_CLIENT_SECRET,
    },
  },
};

Once you have modified the config.js file, you can run the Expressa application by executing the following command:
```
npm start
```
This command will start the application on the port specified in the config.js file.

Conclusion

In this tutorial, you learned how to install and configure Expressa on NixOS Latest. With Expressa, you can quickly build web-based data-driven projects with Node.js, and it provides a solid foundation for creating custom applications.