default.nix

# Generated by npins. Do not modify; will be overwritten regularly
let
  data = builtins.fromJSON (builtins.readFile ./sources.json);
  version = data.version;

  mkSource = spec:
    assert spec ? type; let
      path =
        if spec.type == "Git"
        then mkGitSource spec
        else if spec.type == "GitRelease"
        then mkGitSource spec
        else if spec.type == "PyPi"
        then mkPyPiSource spec
        else if spec.type == "Channel"
        then mkChannelSource spec
        else builtins.throw "Unknown source type ${spec.type}";
    in
      spec // {outPath = path;};

  mkGitSource = {
    repository,
    revision,
    url ? null,
    hash,
    branch ? null,
    ...
  }:
    assert repository ? type;
    # At the moment, either it is a plain git repository (which has an url), or it is a GitHub/GitLab repository
    # In the latter case, there we will always be an url to the tarball
      if url != null
      then
        (builtins.fetchTarball {
          inherit url;
          sha256 = hash; # FIXME: check nix version & use SRI hashes
        })
      else
        assert repository.type == "Git"; let
          urlToName = url: rev: let
            matched = builtins.match "^.*/([^/]*)(\\.git)?$" repository.url;

            short = builtins.substring 0 7 rev;

            appendShort =
              if (builtins.match "[a-f0-9]*" rev) != null
              then "-${short}"
              else "";
          in "${
            if matched == null
            then "source"
            else builtins.head matched
          }${appendShort}";
          name = urlToName repository.url revision;
        in
          builtins.fetchGit {
            url = repository.url;
            rev = revision;
            inherit name;
            # hash = hash;
          };

  mkPyPiSource = {
    url,
    hash,
    ...
  }:
    builtins.fetchurl {
      inherit url;
      sha256 = hash;
    };

  mkChannelSource = {
    url,
    hash,
    ...
  }:
    builtins.fetchTarball {
      inherit url;
      sha256 = hash;
    };
in
  if version == 3
  then builtins.mapAttrs (_: mkSource) data.pins
  else throw "Unsupported format version ${toString version} in sources.json. Try running `npins upgrade`"