Using a Torrent or Magnet Link as a Program File Install Source

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1

Torrenting is the best way I know to do p2p file sharing. Dependencies hosted on a single website I would fear might run the risk of eventually having lost dependencies and/or at the very least being less generally resilient.

Lets say I wanted to write a flake which took a torrent as a source for my programs project files. How might I accomplish that end?

2

Like this?

{
  description = "Download assets via torrent.";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
  };

  outputs = { self, nixpkgs }:
  let sys = "x86_64-linux";
  pkgs = nixpkgs.legacyPackages.${sys};
  in
  {
    packages.${sys}.moon = pkgs.runCommandLocal "fetch-the-moon" {
        outputHashAlgo = "sha256";
        outputHashMode = "recursive";
        outputHash = "sha256-74JJ50kULWtfO85BRkDVlunVr0pKJgsPoV4TNC4pPUI=";  
    } ''
      mkdir -p $out
      ${pkgs.lib.getExe pkgs.aria2} --dht-file-path=./dht.dat --seed-time=0 --select-file=1 https://archive.org/download/MSFC-6901249/MSFC-6901249_archive.torrent -O 1=./moon.jpg
      cp moon.jpg $out/.
    '';
  };
}

ls -al $(nix build --print-out-paths .#moon)
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