From f459a5bb3a7142dee5d82c5d385bc3c4654c8e2c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Mon, 13 Nov 2006 18:19:05 +0000
Subject: [PATCH] * Remove the undocumented `noscan' feature.  It's no longer
 necessary   now that reference scanning is sufficiently streamy.

---
 src/libstore/build.cc | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 82f713c8c..7058bd12b 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1479,21 +1479,18 @@ void DerivationGoal::computeClosure()
 
 	/* For this output path, find the references to other paths contained
 	   in it. */
-        PathSet references;
-        if (!pathExists(path + "/nix-support/no-scan")) {
-            references = scanForReferences(path, allPaths);
+        PathSet references = scanForReferences(path, allPaths);
 
-            /* For debugging, print out the referenced and
-               unreferenced paths. */
-            for (PathSet::iterator i = inputPaths.begin();
-                 i != inputPaths.end(); ++i)
-            {
-                PathSet::iterator j = references.find(*i);
-                if (j == references.end())
-                    debug(format("unreferenced input: `%1%'") % *i);
-                else
-                    debug(format("referenced input: `%1%'") % *i);
-            }
+        /* For debugging, print out the referenced and unreferenced
+           paths. */
+        for (PathSet::iterator i = inputPaths.begin();
+             i != inputPaths.end(); ++i)
+        {
+            PathSet::iterator j = references.find(*i);
+            if (j == references.end())
+                debug(format("unreferenced input: `%1%'") % *i);
+            else
+                debug(format("referenced input: `%1%'") % *i);
         }
 
         allReferences[path] = references;