shell.nix files for various dev environments

aider-chat.nix

{ pkgs ? import <nixpkgs> {} }:

pkgs.mkShell {
  buildInputs = [
    pkgs.virtualenv
    (pkgs.python3.withPackages (ps: with ps; [
      ps.pip
    ]))
  ];

  shellHook = ''
    if [ ! -d ".venv" ]; then
      echo "Creating virtual environment..."
      virtualenv .venv
    fi

    echo "Activating virtual environment..."
    source .venv/bin/activate

    echo "Python version: $(python --version)"
    echo "Pip version: $(pip --version)"

    if ! pip show aider-chat > /dev/null 2>&1; then
      echo "Installing aider-chat..."
      pip install aider-chat
    else
      echo "aider-chat is already installed."
    fi
  '';
}

deno-1.42.4

{ pkgs ? import <nixpkgs> {} }:

let
  deno = import ./deno-installer.nix { inherit pkgs; };
in
pkgs.mkShell {
  buildInputs = [ deno ];
}

deno-installer.nix

{ pkgs ? import <nixpkgs> {} }:

pkgs.stdenv.mkDerivation rec {
  pname = "deno";
  version = "1.42.4";

  src = pkgs.fetchurl {
    url = "https://github.com/denoland/deno/releases/download/v${version}/deno-aarch64-apple-darwin.zip";
    # curl -sL "https://github.com/denoland/deno/releases/download/v1.42.4/deno-aarch64-apple-darwin.zip" | shasum -a 256 | cut -d " " -f 1
    sha256 = "d0589dc6e85a7b938486029908d013daf98ddba00006bcb685c50218eb5d12c3";
  };

  buildInputs = [ pkgs.unzip ];  # Ensure unzip is available

  unpackPhase = ''
    unzip $src -d $TMPDIR
    sourceRoot=$TMPDIR
  '';

  installPhase = ''
    install -D $sourceRoot/deno -t $out/bin
  '';

  meta = with pkgs.lib; {
    description = "A secure runtime for JavaScript and TypeScript";
    homepage = "https://deno.land/";
    license = licenses.mit;
    platforms = [ "aarch64-darwin" ];
  };
}

node20.nix

{ pkgs ? import <nixpkgs> {}
}:
pkgs.mkShell {
  name="node20-dev-environment";
  buildInputs = [
    pkgs.nodejs_20
  ];
  shellHook = ''
    echo "Start developing..."
  '';
}