From e8231dc756aa85ba019a23fce035032c56e38c2a Mon Sep 17 00:00:00 2001
From: jr7square <juniorrecinos@Juniors-MacBook-Pro.local>
Date: Thu, 4 Oct 2018 20:40:45 -0400
Subject: [PATCH] Provide a good message for error described in issue #2846

---
 pipenv/core.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pipenv/core.py b/pipenv/core.py
index 59b9a29c..e1243d79 100644
--- a/pipenv/core.py
+++ b/pipenv/core.py
@@ -1775,6 +1775,9 @@ def do_install(
     # Don't search for requirements.txt files if the user provides one
     if requirements or package_args or project.pipfile_exists:
         skip_requirements = True
+    # Don't attempt to install develop and default packages if Pipfile is missing
+    if not project.pipfile_exists and not packages and dev:
+        click.echo("Could not find Pipfile.", err=True)
     concurrent = not sequential
     # Ensure that virtualenv is available.
     ensure_project(