From 6c5a0f833238bd7d330dfcb8ca704077acb7861a Mon Sep 17 00:00:00 2001
From: Dylan Baker <dylan@pnwbakers.com>
Date: Tue, 15 Mar 2022 13:52:34 -0700
Subject: unittests: Fix rpath tests no nixos

Which insert a bunch of rpath entries we strip, but then don't check if
they're empty and fail anyway.
---
 unittests/helpers.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/unittests/helpers.py b/unittests/helpers.py
index 182dfa3..ac9d980 100644
--- a/unittests/helpers.py
+++ b/unittests/helpers.py
@@ -171,6 +171,9 @@ def get_rpath(fname: str) -> T.Optional[str]:
     # nix/nixos adds a bunch of stuff to the rpath out of necessity that we
     # don't check for, so clear those
     final = ':'.join([e for e in raw.split(':') if not e.startswith('/nix')])
+    # If we didn't end up anything but nix paths, return None here
+    if not final:
+        return None
     return final
 
 def get_path_without_cmd(cmd: str, path: str) -> str:
-- 
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