Prevent issue with upgrading when no packages are specified to instal…

…l. Prevent issue with duplicated sources being added to Pipfile.

pipenv/project.py

@@ -1273,26 +1273,45 @@ def src_name_from_url(self, index_url):
         return name
 
     def add_index_to_pipfile(self, index, verify_ssl=True):
-        """Adds a given index to the Pipfile."""
+        """
+        Adds a given index to the Pipfile if it doesn't already exist.
+        Returns the source name regardless of whether it was newly added or already existed.
+        """
         # Read and append Pipfile.
         p = self.parsed_pipfile
         source = None
+
+        # Try to find existing source by URL or name
         try:
             source = self.get_source(url=index)
         except SourceNotFound:
             with contextlib.suppress(SourceNotFound):
                 source = self.get_source(name=index)
 
+        # If we found an existing source with a name, return it
         if source is not None and source.get("name"):
             return source["name"]
-        source = {"url": index, "verify_ssl": verify_ssl}
-        source["name"] = self.src_name_from_url(index)
-        # Add the package to the group.
+
+        # Check if the URL already exists in any source
+        if "source" in p:
+            for existing_source in p["source"]:
+                if existing_source.get("url") == index:
+                    return existing_source.get("name")
+
+        # If we reach here, the source doesn't exist, so create and add it
+        source = {
+            "url": index,
+            "verify_ssl": verify_ssl,
+            "name": self.src_name_from_url(index),
+        }
+
+        # Add the source to the group
         if "source" not in p:
             p["source"] = [tomlkit.item(source)]
         else:
             p["source"].append(tomlkit.item(source))
-        # Write Pipfile.
+
+        # Write Pipfile
         self.write_toml(p)
         return source["name"]
 

pipenv/routines/install.py

@@ -109,7 +109,7 @@ def handle_new_packages(
             project.update_settings({"allow_prereleases": pre})
 
     # Use the update routine for new packages
-    if perform_upgrades:
+    if perform_upgrades and (packages or editable_packages):
         try:
             do_update(
                 project,

pipenv/routines/update.py

@@ -280,10 +280,7 @@ def upgrade(
 
     index_name = None
     if index_url:
-        if project.get_index_by_url(index_url):
-            index_name = project.get_index_by_url(index_url)["name"]
-        else:
-            index_name = add_index_to_pipfile(project, 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)

tests/integration/test_install_vcs.py

@@ -106,7 +106,7 @@ def test_vcs_dev_package_install(pipenv_instance_pypi):
 
         # Verify package appears in develop section of lockfile
         assert "pytest-xdist" in p.lockfile["develop"]
-        assert p.lockfile["develop"]["pytest-xdist"]["git"] == "git+https://github.com/pytest-dev/pytest-xdist.git"
+        assert p.lockfile["develop"]["pytest-xdist"]["git"] == "https://github.com/pytest-dev/pytest-xdist.git"
         assert p.lockfile["develop"]["pytest-xdist"]["ref"] == "4dd2978031eaf7017c84a1cc77667379a2b11c64"
 
         # Verify the package is importable