From fc41978bbb02c2883c087614f4a3cc914785743c Mon Sep 17 00:00:00 2001
From: Isheros <drilisheros@gmail.com>
Date: Sun, 6 Dec 2020 21:54:38 -0600
Subject: [PATCH 1/4] Added set sources to DEFAULT_SOURCE if the section does
 not exist in the PIPFILE

---
 pipenv/project.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pipenv/project.py b/pipenv/project.py
index 62dffd74..6feb05c7 100644
--- a/pipenv/project.py
+++ b/pipenv/project.py
@@ -821,8 +821,10 @@ class Project(object):
         from .vendor.plette.lockfiles import PIPFILE_SPEC_CURRENT
         if self.lockfile_exists:
             sources = self.lockfile_content.get("_meta", {}).get("sources", [])
-        else:
+        elif "source" in self.parsed_pipfile:
             sources = [dict(source) for source in self.parsed_pipfile["source"]]
+        else:
+            sources = self.pipfile_sources
         if not isinstance(sources, list):
             sources = [sources]
         return {

From 24839f3c26a8fdd4d2e3ed44ff119172aa2311e9 Mon Sep 17 00:00:00 2001
From: Isheros <drilisheros@gmail.com>
Date: Sun, 6 Dec 2020 22:32:29 -0600
Subject: [PATCH 2/4] Added news fragment

---
 news/4141.bugfix.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 news/4141.bugfix.rst

diff --git a/news/4141.bugfix.rst b/news/4141.bugfix.rst
new file mode 100644
index 00000000..7a60a91d
--- /dev/null
+++ b/news/4141.bugfix.rst
@@ -0,0 +1 @@
+Fix a bug where passing --skip-lock when PIPFILE has no [SOURCE] section throws the error: "tomlkit.exceptions.NonExistentKey: 'Key "source" does not exist.'"
\ No newline at end of file

From 122379026aa25bdad083328ac67fa5fb4deed701 Mon Sep 17 00:00:00 2001
From: Isheros <drilisheros@gmail.com>
Date: Mon, 7 Dec 2020 01:48:42 -0600
Subject: [PATCH 3/4] Added a test for the bug

---
 tests/integration/test_project.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tests/integration/test_project.py b/tests/integration/test_project.py
index dac05d34..fe3682d0 100644
--- a/tests/integration/test_project.py
+++ b/tests/integration/test_project.py
@@ -230,3 +230,18 @@ def test_run_in_virtualenv(PipenvInstance):
         c = p.pipenv("clean --dry-run")
         assert c.return_code == 0
         assert "click" in c.out
+
+@pytest.mark.project
+@pytest.mark.sources
+@pytest.mark.needs_internet
+def test_not_sources_in_pipfile(PipenvInstance):
+    with PipenvInstance(chdir=True) as p:
+        with open(p.pipfile_path, 'w') as f:
+            contents = """
+[packages]
+pytest = "*"
+            """.format(os.environ['PIPENV_TEST_INDEX']).strip()
+            f.write(contents)
+        c = p.pipenv('install --skip-lock')
+        assert c.return_code == 0
+

From dc882677e95be48a5737eb312c0adc669098d18d Mon Sep 17 00:00:00 2001
From: Isheros <drilisheros@gmail.com>
Date: Mon, 7 Dec 2020 01:51:02 -0600
Subject: [PATCH 4/4] Added fix for bug 4141

---
 tests/integration/test_project.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tests/integration/test_project.py b/tests/integration/test_project.py
index fe3682d0..44872b0e 100644
--- a/tests/integration/test_project.py
+++ b/tests/integration/test_project.py
@@ -233,8 +233,7 @@ def test_run_in_virtualenv(PipenvInstance):
 
 @pytest.mark.project
 @pytest.mark.sources
-@pytest.mark.needs_internet
-def test_not_sources_in_pipfile(PipenvInstance):
+def test_no_sources_in_pipfile(PipenvInstance):
     with PipenvInstance(chdir=True) as p:
         with open(p.pipfile_path, 'w') as f:
             contents = """