nixify-yarn

#!/usr/bin/env bash
set -e

url=$(curl https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz -s -L -I -o /dev/null -w '%{url_effective}')
echo Got tarball URL "$url"
sha=$(nix-prefetch-url --unpack "$url")
echo With SHA $sha


cat > shell.nix <<EOF 
with import (
  builtins.fetchTarball {
      url = "$url";
      sha256 = "$sha";
  }
) { };

mkShell rec {

  buildInputs = [
    yarn
  ];

}
EOF