Installing Kretes


Kretes uses the Nix package manager to simplify the management of the application dependencies. This not only makes the development environment easier to manage, but it also can substantially help organize dependencies when deploying to production.

Once Nix is installed, there will no longer be needed to install any dependencies manually, including things like setting up and configuring the database and its plugins. From now on everything needed by Kretes to run your application will be automatically installed and configured behind the scenes.

Note, that the installation of the first dependency in Nix can be a bit long, but afterwards it will be quick again.


curl -L | sh


sh <(curl -L --darwin-use-unencrypted-nix-store-volume


Windows requires the Windows Subsystem for Linux (WSL). This needs to be manually activated using Powershell (with administrator privileges):

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart

Here's a guide how to install Nix on Windows by Nathan Bijnens

Verify Nix installation

Once Nix is installed, try to install the PostgreSQL package:

nix-shell -p postgresql_13

Nix Shell Integration

You can configure automatic setup of a development environment when entering your project directory.

Install direnv:

nix-env -i direnv

Then, set up the direnv hook for your shell.


Add the following line at the end of the ~/.bashrc file:

eval "$(direnv hook bash)"


Add the following line at the end of the ~/.zshrc file:

eval "$(direnv hook zsh)"

Install the Kretes extension from the VS Code Marketplace.

Kretes Zap: Installing the Extensions

If you enjoy the process, please rate the extension. It will help raise the project visibility. If there's something wrong, please let me know before, so I could fix. It's in human nature to make errors and I'd appreciate your communication so we could make it better together!

Using CLI

Install kretes globally to use the CLI commands

npm install -g kretes

Open the application in Visual Studio Code

code my-project

Found a mistake?