Revert "nix-pin: 0.1.2 -> 0.2.2"

This reverts commit 92f083af238f844a0267531cc25275f80e97622e.

breaks evaluation

pkgs/tools/package-management/nix-pin/default.nix

···
 { pkgs, stdenv, fetchFromGitHub, mypy, python3 }:
 let self = stdenv.mkDerivation rec {
   name = "nix-pin-${version}";
-  version = "0.2.2";
+  version = "0.1.2";
   src = fetchFromGitHub {
     owner = "timbertson";
     repo = "nix-pin";
-    rev = "version-0.2.2";
-    sha256 = "1kw43kzy4m6lnnif51r2a8i4vcgr7d4vqb1c75p7pk2b9y3jwxsz";
+    rev = "version-0.1.2";
+    sha256 = "1zwfb5198qzbjwivgiaxbwva9frgrrqaj92nw8vz95yi08pijssh";
   };
   buildInputs = [ python3 mypy ];
   buildPhase = ''
···
     mkdir "$out"
     cp -r bin share "$out"
   '';
-  passthru =
-    let api = import "${self}/share/nix/api.nix" { inherit pkgs; }; in
-    {
-      inherit (api) augmentedPkgs pins callPackage;
-    };
+  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";