Use requests to fetch tarballs from GitHub in setup.py

This hopefully avoids issues with SSL certificates, since
requests uses certifi.

3 files changed, 20 insertions, 6 deletions

diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..e9a46a2
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,8 @@
+[build-system]
+requires = [
+    "setuptools>=43",
+    "wheel",
+    "requests",
+    "certifi"
+]
+build-backend = "setuptools.build_meta"
diff --git a/setup.py b/setup.py
index 30f4c50..ca5d246 100644
--- a/setup.py
+++ b/setup.py
@@ -5,17 +5,20 @@ import platform
 import subprocess
 import tarfile
 import shutil
-
 import sysconfig
 
+import requests
 from setuptools import setup
-from setuptools.extension import Extension
 from setuptools.command.build_ext import build_ext
+from setuptools.extension import Extension
+
+
+def urlretrieve(source_url, destination_path):
+    response = requests.get(source_url, stream=True)
 
-try:
-    from urllib import urlretrieve
-except ImportError:
-    from urllib.request import urlretrieve
+    with open(destination_path, "wb") as fileobj:
+        for chunk in response.iter_content(chunk_size=128):
+            fileobj.write(chunk)
 
 def path_in_dir(relative_path):
     return os.path.abspath(os.path.join(os.path.dirname(__file__), relative_path))
@@ -77,7 +80,9 @@ class jq_build_ext(build_ext):
     def _download_tarball(self, source_url, tarball_path):
         if os.path.exists(tarball_path):
             os.unlink(tarball_path)
+        print("Downloading {}".format(source_url))
         urlretrieve(source_url, tarball_path)
+        print("Downloaded {}".format(source_url))
 
         if os.path.exists(jq_lib_dir):
             shutil.rmtree(jq_lib_dir)
diff --git a/tox.ini b/tox.ini
index 50a436e..c86609a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,6 @@
 [tox]
 envlist = py27,py34,py35,py36,py37,py38,pypy,pypy3
+isolated_build = True
 [testenv]
 changedir = {envtmpdir}
 deps=-r{toxinidir}/test-requirements.txt