From 6551b36790d47477087fc3a7f7bb779f28e42d8e Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Tue, 10 Feb 2004 13:42:58 +0000
Subject: [PATCH] * Print what generation we are switching to; honour --dry-run
 flag.

---
 src/nix-env/main.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/nix-env/main.cc b/src/nix-env/main.cc
index 57cde9fd09..673d1b2be5 100644
--- a/src/nix-env/main.cc
+++ b/src/nix-env/main.cc
@@ -528,6 +528,11 @@ static void switchGeneration(Globals & globals, int dstGen)
         else
             throw Error(format("generation %1% does not exist") % dstGen);
 
+    printMsg(lvlInfo, format("switching from generation %1% to %2%")
+        % curGen % dst.number);
+    
+    if (globals.dryRun) return;
+    
     switchLink(globals.profile, dst.path);
 }