Merge pull request #5470 from efugier/feat/shells/support-for-nushell

feat(shells): support nushell

news/5470.feature.rst

@@ -0,0 +1 @@
+Find nushell activate scripts.

pipenv/shells.py

@@ -44,6 +44,9 @@ def _get_activate_script(cmd, venv):
     elif "csh" in cmd:
         suffix = ".csh"
         command = "source"
+    elif "nu" in cmd:
+        suffix = ".nu"
+        command = "source"
     else:
         suffix = ""
         command = "."