From 2bd2345a660deb56907b5a3fc6db2210d578adeb Mon Sep 17 00:00:00 2001
From: Jonathan Ringer <jonringer117@gmail.com>
Date: Sat, 15 Aug 2020 16:09:58 -0700
Subject: [PATCH] python37Packages.ptpython: fix deps

---
 pkgs/development/python-modules/ptpython/default.nix | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/python-modules/ptpython/default.nix b/pkgs/development/python-modules/ptpython/default.nix
index 496dc2d2aaa2..47fd2b334588 100644
--- a/pkgs/development/python-modules/ptpython/default.nix
+++ b/pkgs/development/python-modules/ptpython/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, buildPythonPackage, fetchPypi, prompt_toolkit, appdirs, docopt, jedi
-, pygments, isPy3k }:
+{ stdenv, lib, buildPythonPackage, pythonOlder, fetchPypi, prompt_toolkit, appdirs, docopt, jedi
+, pygments, importlib-metadata, isPy3k }:
 
 buildPythonPackage rec {
   pname = "ptpython";
@@ -11,7 +11,8 @@ buildPythonPackage rec {
     sha256 = "9ac4e4047ca3a03133702a353a93cf56ca1ec1162bc7ecaff087a91c03e3827b";
   };
 
-  propagatedBuildInputs = [ appdirs prompt_toolkit docopt jedi pygments ];
+  propagatedBuildInputs = [ appdirs prompt_toolkit docopt jedi pygments ]
+    ++ lib.optionals (pythonOlder "3.8") [ importlib-metadata ];
 
   # no tests to run
   doCheck = false;