From 0d2bc686817306502b71f5ca2cd49cb1d501247c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Fri, 29 Aug 2003 13:12:30 +0000
Subject: [PATCH] * Do not show the output of the builder unless the verbosity
 is at   least at debug level (-vvv).  The output is still appended to the  
 build log in /nix/var/log/nix.

---
 src/exec.cc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/exec.cc b/src/exec.cc
index d4ee88f8aa..e9ddb5ee14 100644
--- a/src/exec.cc
+++ b/src/exec.cc
@@ -43,8 +43,12 @@ void runProgram(const string & program,
 {
     /* Create a log file. */
     string logFileName = nixLogDir + "/run.log";
+    string logCommand = 
+	verbosity >= lvlDebug 
+	? "tee -a "  + logFileName + " >&2"
+	: "cat >> " + logFileName;
     /* !!! auto-pclose on exit */
-    FILE * logFile = popen(("tee -a " + logFileName + " >&2").c_str(), "w"); /* !!! escaping */
+    FILE * logFile = popen(logCommand.c_str(), "w"); /* !!! escaping */
     if (!logFile)
         throw SysError(format("creating log file `%1%'") % logFileName);