{
  # nix-store --query --hash $(nix store add-path ./vasp-6.4.0)
  "6.3.1" = "1xdr5kjxz6v2li73cbx1ls5b1lnm6z16jaa4fpln7d3arnnr1mgx";
  "6.4.0" = "189i1l5q33ynmps93p2mwqf5fx7p4l50sls1krqlv8ls14s3m71f";
}