devenv setup

.envrc

#!/usr/bin/env bash

export DIRENV_WARN_TIMEOUT=20s

# Use shell.nix for devenv to ensure we all use the same version
use nix
eval "$(devenv direnvrc)"
use devenv

dotenv_if_exists

README.md

The following is a setup to use devenv that requires just nix to be installed. The shell.nix is pinned to a stable release eg: 25.11 to install devenv, and then devenv is pinned to the same table release.

After running devenv init be sure that devenv.yaml is pinned to the same nixpkgs of shell.nix to reuse the same stable artifacts.

The .envrc enable the usage of direnv which is handle for the terminal and can also be used by VSCode via https://marketplace.visualstudio.com/items?itemName=mkhl.direnv

devenv.yaml

inputs:
  nixpkgs:
    url: github:NixOS/nixpkgs/871b9fd269ff6246794583ce4ee1031e1da71895

shell.nix

# Pin nixpkgs to ensure all developers use the same version of devenv.
#
# To update: change the rev below and run:
#   nix-prefetch-url --unpack https://github.com/NixOS/nixpkgs/archive/<NEW_REV>.tar.gz
# Then replace the sha256 with the output.
{
  pkgs ? import (fetchTarball {
    url = "https://github.com/NixOS/nixpkgs/archive/871b9fd269ff6246794583ce4ee1031e1da71895.tar.gz";
    sha256 = "1zn1lsafn62sz6azx6j735fh4vwwghj8cc9x91g5sx2nrg23ap9k";
  }) {}
}:

pkgs.mkShell {
  buildInputs = with pkgs; [
    devenv
  ];

  shellHook = ''
    echo "devenv environment loaded"
  '';
}