Supply the extra pip args in the resolver.

news/6006.feature.rst

@@ -0,0 +1 @@
+Supply any ``--extra-pip-args`` also in the resolver steps.

pipenv/cli/command.py

@@ -258,6 +258,7 @@ def upgrade(state, **kwargs):
         dev=state.installstate.dev,
         system=state.system,
         lock_only=state.installstate.lock_only,
+        extra_pip_args=state.installstate.extra_pip_args,
     )
 
 

pipenv/routines/lock.py

@@ -14,6 +14,7 @@ def do_lock(
     write=True,
     pypi_mirror=None,
     categories=None,
+    extra_pip_args=None,
 ):
     """Executes the freeze functionality."""
     if not pre:
@@ -74,6 +75,7 @@ def do_lock(
             pipfile=packages,
             lockfile=lockfile,
             old_lock_data=old_lock_data,
+            extra_pip_args=extra_pip_args,
         )
 
     # Overwrite any category packages with default packages.

pipenv/routines/update.py

@@ -1,3 +1,5 @@
+import json
+import os
 import sys
 from collections import defaultdict
 
@@ -62,6 +64,7 @@ def do_update(
             pre=pre,
             pypi_mirror=pypi_mirror,
             write=not outdated,
+            extra_pip_args=extra_pip_args,
         )
     else:
         upgrade(
@@ -75,6 +78,7 @@ def do_update(
             index_url=index_url,
             dev=dev,
             lock_only=lock_only,
+            extra_pip_args=extra_pip_args,
         )
 
     if outdated:
@@ -110,6 +114,7 @@ def upgrade(
     categories=None,
     dev=False,
     lock_only=False,
+    extra_pip_args=None,
 ):
     lockfile = project.lockfile()
     if not pre:
@@ -123,6 +128,9 @@ def upgrade(
     if index_url:
         index_name = add_index_to_pipfile(project, index_url)
 
+    if extra_pip_args:
+        os.environ["PIPENV_EXTRA_PIP_ARGS"] = json.dumps(extra_pip_args)
+
     package_args = list(packages) + [f"-e {pkg}" for pkg in editable_packages]
 
     requested_install_reqs = defaultdict(dict)

pipenv/utils/resolver.py

@@ -261,6 +261,10 @@ def prepare_pip_args(self, use_pep517=None, build_isolation=True):
         if self.pre:
             pip_args.append("--pre")
         pip_args.extend(["--cache-dir", self.project.s.PIPENV_CACHE_DIR])
+        extra_pip_args = os.environ.get("PIPENV_EXTRA_PIP_ARGS")
+        if extra_pip_args:
+            extra_pip_args = json.loads(extra_pip_args)
+            pip_args.extend(extra_pip_args)
         return pip_args
 
     @property  # cached_property breaks authenticated private indexes
@@ -733,6 +737,7 @@ def venv_resolve_deps(
     pipfile=None,
     lockfile=None,
     old_lock_data=None,
+    extra_pip_args=None,
 ):
     """
     Resolve dependencies for a pipenv project, acts as a portal to the target environment.
@@ -784,7 +789,11 @@ def venv_resolve_deps(
             os.environ["PIPENV_SITE_DIR"] = pipenv_site_dir
         else:
             os.environ.pop("PIPENV_SITE_DIR", None)
-        with console.status("Locking...", spinner=project.s.PIPENV_SPINNER) as st:
+        if extra_pip_args:
+            os.environ["PIPENV_EXTRA_PIP_ARGS"] = json.dumps(extra_pip_args)
+        with console.status(
+            f"Locking {category}...", spinner=project.s.PIPENV_SPINNER
+        ) as st:
             # This conversion is somewhat slow on local and file-type requirements since
             # we now download those requirements / make temporary folders to perform
             # dependency resolution on them, so we are including this step inside the