Merge pull request #5512 from pypa/missing-index

Remove newer code branch that prevents new sources from being added to lockfile.

Author: oz123

news/5508.bugfix.rst

@@ -0,0 +1 @@
+Fix regression: pipenv does not sync indexes to lockfile.

pipenv/project.py

@@ -759,13 +759,7 @@ def get_or_create_lockfile(self, categories, from_pipfile=False):
     def get_lockfile_meta(self):
         from .vendor.plette.lockfiles import PIPFILE_SPEC_CURRENT
 
-        if self.lockfile_exists:
-            sources = (
-                self.load_lockfile(expand_env_vars=False)
-                .get("_meta", {})
-                .get("sources", [])
-            )
-        elif "source" in self.parsed_pipfile:
+        if "source" in self.parsed_pipfile:
             sources = [dict(source) for source in self.parsed_pipfile["source"]]
         else:
             sources = self.pipfile_sources(expand_vars=False)