From 27f57c901800c085ecc4667748b2c3a2485ee8cb Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Tue, 18 Sep 2007 14:01:14 +0000
Subject: [PATCH] * Ignore dangling symlinks in ~/.nix-defexpr.

---
 src/nix-env/nix-env.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc
index ad5a1b0958..77f8a2a615 100644
--- a/src/nix-env/nix-env.cc
+++ b/src/nix-env/nix-env.cc
@@ -116,9 +116,14 @@ static void getAllExprs(EvalState & state,
 
     for (Strings::iterator i = names.begin(); i != names.end(); ++i) {
         Path path2 = path + "/" + *i;
+        
+        struct stat st;
+        if (stat(path2.c_str(), &st) == -1)
+            continue; // ignore dangling symlinks in ~/.nix-defexpr
+        
         if (isNixExpr(path2))
             attrs.set(toATerm(*i), makeAttrRHS(
-                parseExprFromFile(state, absPath(path2)), makeNoPos()));
+                    parseExprFromFile(state, absPath(path2)), makeNoPos()));
         else
             getAllExprs(state, path2, attrs);
     }