{ pkgs ? import <nixpkgs> { } }:
with pkgs;
let
  jasmin-src = fetchFromGitHub {
    owner = "jasmin-lang";
    repo = "jasmin";
    rev = "4d42c212b924ad7553c2eab49d337fd128ad629b";
    hash = "sha256-Ve9Eezpvi1wynlqQxO4KDSqw13MDXQmR8NjOS3PHWzg=";
  };

  jasmin-drv = callPackage "${jasmin-src}/default.nix" { inherit pkgs; };
  jasmin = jasmin-drv.overrideAttrs {
    name = "jasmin with syscalls";
    buildPhase = ''
      make -C compiler/ CIL
      make -C compiler/
    '';
  };

  libjade = fetchFromGitHub {
    owner = "formosa-crypto";
    repo = "libjade";
    rev = "b0940068243f01dc3c185d166f1450936eec3eed";
    hash = "sha256-w71QmJn5TG1cJ+SGXJyjh86uge177uRGSvwgnJXpKYg=";
  };
in
stdenv.mkDerivation {
  name = "x25519-agent";
  src = nix-gitignore.gitignoreSource [ ] ./.;

  nativeBuildInputs = [
    gnumake
    gcc
    jasmin
    libjade
  ];

  configurePhase = ''
    mkdir build
  '';

  installPhase = ''
    mkdir -p $out/lib
    cp build/libagent.a $out/lib
  '';

  JASMINPATH = "Jade=${libjade}/src/";
}