How to install the Codecrafters CLI on NixOS

AbdullahKhan-x · November 16, 2025, 1:41pm

Hey All, I am new to Linux and I was trying to get the Codecrafters CLI to run on my device there is a package called codecrafters-cli but it is v36-1a36513 and this one is too outdated and isn’t supported by the codecrafters server. I tried the commands on their website

curl https://codecrafters.io/install.sh | sh

but the shell script hosted at the link here runs a bunch of commands few of them being

INSTALL_DIR=${INSTALL_DIR:-/usr/local/bin}
INSTALL_PATH=${INSTALL_PATH:-$INSTALL_DIR/codecrafters}

the path usr/local/bin doesn’t exist on NixOS if I am not wrong well I don’t think I can modify the path so;

I downloaded one the file called v44_linux_386.tar.gz but I don’t know how to install it it has a readme a license and a executable inside it also I tried chatgpt but frankly it is too dumb it suggested stuff but none worked

phaeseeKe5Ee · November 16, 2025, 3:33pm

The nixpkgs-unstable branch packaged the v44 version of the software

github.com/NixOS/nixpkgs

pkgs/by-name/co/codecrafters-cli/package.nix

1d4c88323

{
  lib,
  buildGoModule,
  fetchFromGitHub,
  git,
}:

buildGoModule rec {
  pname = "codecrafters-cli";
  version = "44";

  src = fetchFromGitHub {
    owner = "codecrafters-io";
    repo = "cli";
    tag = "v${version}";
    hash = "sha256-eyKQMMF9EEF55r+Q1QcqiswctXCqetgnAKQJTwaC60s=";
    # A shortened git commit hash is part of the version output, and is
    # needed at build time. Use the `.git` directory to retrieve the
    # commit SHA, and remove the directory afterwards since it is not needed
    # after that.

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You can use overlays nix function to only take this package from nixpkgs-unstable branch