{ pkgs, stdenv, fetchFromGitHub, mypy, python3 }:
let self = stdenv.mkDerivation rec {
  name = "nix-pin-${version}";
  version = "0.2.2";
  src = fetchFromGitHub {
    owner = "timbertson";
    repo = "nix-pin";
    rev = "version-0.2.2";
    sha256 = "1kw43kzy4m6lnnif51r2a8i4vcgr7d4vqb1c75p7pk2b9y3jwxsz";
  };
  buildInputs = [ python3 mypy ];
  buildPhase = ''
    mypy bin/*
  '';
  installPhase = ''
    mkdir "$out"
    cp -r bin share "$out"
  '';
  passthru =
    let api = import "${self}/share/nix/api.nix" { inherit pkgs; }; in
    {
      inherit (api) augmentedPkgs pins callPackage;
    };
  meta = with stdenv.lib; {
    homepage = "https://github.com/timbertson/nix-pin";
    description = "nixpkgs development utility";
    license = licenses.mit;
    maintainers = [ maintainers.timbertson ];
    platforms = platforms.all;
  };
}; in self

{ pkgs, stdenv, fetchFromGitHub, mypy, python3 }:
let self = stdenv.mkDerivation rec {
  name = "nix-pin-${version}";
  version = "0.1.2";
  src = fetchFromGitHub {
    owner = "timbertson";
    repo = "nix-pin";
    rev = "version-0.1.2";
    sha256 = "1zwfb5198qzbjwivgiaxbwva9frgrrqaj92nw8vz95yi08pijssh";
  };
  buildInputs = [ python3 mypy ];
  buildPhase = ''
    mypy bin/*
  '';
  installPhase = ''
    mkdir "$out"
    cp -r bin share "$out"
  '';
  passthru = {
    callWithPins = path: args:
      import "${self}/share/nix/call.nix" {
        inherit pkgs path args;
      };
  };
  meta = with stdenv.lib; {
    homepage = "https://github.com/timbertson/nix-pin";
    description = "nixpkgs development utility";
    license = licenses.mit;
    maintainers = [ maintainers.timbertson ];
    platforms = platforms.all;
  };
}; in self

Revert "nix-pin: 0.1.2 -> 0.2.2"
Revert "nix-pin: 0.1.2 -> 0.2.2"

This reverts commit 92f083af238f844a0267531cc25275f80e97622e.

breaks evaluation
