pypa#3722 Check overlapping packages between default and dev during u…

…ninstall all-dev

pipenv/core.py

@@ -2245,8 +2245,10 @@ def do_uninstall(
         )
         do_purge(bare=False, allow_global=system)
         sys.exit(0)
+    overlapping_package_names = set()
     if all_dev:
         package_names = project_pkg_names["dev"]
+        overlapping_package_names = project_pkg_names["dev"] & project_pkg_names["default"]
     else:
         package_names = set([pkg_name for pkg_name in package_names])
     selected_pkg_map = {
@@ -2264,7 +2266,7 @@ def do_uninstall(
             )
         )
         # Uninstall the package.
-        if package_name in packages_to_remove:
+        if package_name in packages_to_remove and package_name not in overlapping_package_names:
             with project.environment.activated():
                 if pip_path is None:
                     pip_path = which_pip(allow_global=system)
@@ -2286,7 +2288,7 @@ def do_uninstall(
                     crayons.white(fix_utf8("Pipfile.lock…")))
                 )
                 lockfile = project.get_or_create_lockfile()
-                if normalized in lockfile.default:
+                if normalized in lockfile.default and package_name not in overlapping_package_names:
                     del lockfile.default[normalized]
                 if normalized in lockfile.develop:
                     del lockfile.develop[normalized]

tests/integration/test_uninstall.py

@@ -155,10 +155,10 @@ def test_uninstall_all_dev(PipenvInstance):
 @pytest.mark.install
 def test_uninstall_all_dev_leave_prod_packages(PipenvInstance):
     with PipenvInstance() as p:
-        c = p.pipenv("install flask")
+        c = p.pipenv("install --dev black")
         assert c.return_code == 0
 
-        c = p.pipenv("install --dev black")
+        c = p.pipenv("install flask")
         assert c.return_code == 0
 
         assert "flask" in p.pipfile["packages"]