From ffe5d2f74cd61af6c73d018a9d1828a4a8133995 Mon Sep 17 00:00:00 2001
From: frostming <frostming@tencent.com>
Date: Wed, 6 Mar 2019 17:10:49 +0800
Subject: [PATCH 1/2] Overwrite environment variable

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

diff --git a/pipenv/project.py b/pipenv/project.py
index eb802cbbd9..8c813170bb 100644
--- a/pipenv/project.py
+++ b/pipenv/project.py
@@ -99,6 +99,9 @@ def preferred_newlines(f):
 
     else:
         PIPENV_PIPFILE = _normalized(PIPENV_PIPFILE)
+        # Overwrite environment variable so that subprocesses can get the correct path.
+        # See https://github.com/pypa/pipenv/issues/3584
+        os.environ['PIPENV_PIPFILE'] = PIPENV_PIPFILE
 # (path, file contents) => TOMLFile
 # keeps track of pipfiles that we've seen so we do not need to re-parse 'em
 _pipfile_cache = {}

From 5fc4695c1f6862b5fe26dd47ca5c82ec06e006d4 Mon Sep 17 00:00:00 2001
From: frostming <frostming@tencent.com>
Date: Wed, 6 Mar 2019 17:13:23 +0800
Subject: [PATCH 2/2] create news entry

---
 news/3584.bugfix.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 news/3584.bugfix.rst

diff --git a/news/3584.bugfix.rst b/news/3584.bugfix.rst
new file mode 100644
index 0000000000..09684d1dcb
--- /dev/null
+++ b/news/3584.bugfix.rst
@@ -0,0 +1 @@
+Fix the issue that lock file can't be created when ``PIPENV_PIPFILE`` is not under working directory.