From a887892eb607d45de47e77aeb1a756f7672395b6 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 8 May 2019 14:17:32 +0200
Subject: [PATCH] nix-shell: Don't fail if run from a path containing the
 string "nix-shell"

---
 src/nix-build/nix-build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index 618895d38..5b8e816d8 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -106,7 +106,7 @@ static void _main(int argc, char * * argv)
     // Heuristic to see if we're invoked as a shebang script, namely,
     // if we have at least one argument, it's the name of an
     // executable file, and it starts with "#!".
-    if (runEnv && argc > 1 && !std::regex_search(argv[1], std::regex("nix-shell"))) {
+    if (runEnv && argc > 1 && !std::regex_search(baseNameOf(argv[1]), std::regex("nix-shell"))) {
         script = argv[1];
         try {
             auto lines = tokenizeString<Strings>(readFile(script), "\n");