{ stdenv, fetchFromGitHub, pkgs }:

# To make use of this derivation, use
# `programs.zsh.interactiveShellInit = "source ${pkgs.zsh-nix-shell}/share/zsh-nix-shell/nix-shell.plugin.zsh";`

stdenv.mkDerivation rec {
  pname = "zsh-nix-shell-unstable";
  version = "2019-12-20";

  src = fetchFromGitHub {
    owner = "chisui";
    repo = "zsh-nix-shell";
    rev = "a65382a353eaee5a98f068c330947c032a1263bb";
    sha256 = "0l41ac5b7p8yyjvpfp438kw7zl9dblrpd7icjg1v3ig3xy87zv0n";
  };

  installPhase = ''
    install -D nix-shell.plugin.zsh --target-directory=$out/share/zsh-nix-shell
    install -D scripts/* --target-directory=$out/share/zsh-nix-shell/scripts
  '';

  meta = with stdenv.lib; {
    description = "zsh plugin that lets you use zsh in nix-shell shell";
    homepage = src.meta.homepage;
    license = licenses.bsd3;
    platforms = platforms.unix;
    maintainers = with maintainers; [ aw ];
  };
}