Fix compatibility with pip master (pip>=19.4)

Moved `RequirementPreparer.session` to `Resolver.session`. See pypa/pip#7290
atugushev · Nov 4, 2019 · b54bd72 · b54bd72
1 parent 4dee581
commit b54bd72
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/piptools/repositories/pypi.py b/piptools/repositories/pypi.py
@@ -202,6 +202,10 @@ def resolve_reqs(self, download_dir, ireq, wheel_cache):
                 )
                 resolver_kwargs["make_install_req"] = make_install_req
 
+            if PIP_VERSION >= (19, 4):
+                preparer_kwargs["session"] = self.session
+                del resolver_kwargs["session"]
+
             resolver = None
             preparer = None
             with RequirementTracker() as req_tracker: