From 40dfac968a87c1d90b5b3c9e3ffe72a370165047 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 16 Jan 2017 22:06:05 +0100
Subject: [PATCH] nix-build: Use showManPage() and printVersion()

---
 src/nix-build/nix-build.cc | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index 71ef5af86..2bb12c9b2 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -136,15 +136,11 @@ int main(int argc, char ** argv)
 
             if (arg == "--help") {
                 deletePath(tmpDir);
-                tmpDir.cancel();
-                execlp("man", "man", myName, NULL);
-                throw SysError("executing man");
+                showManPage(myName);
             }
 
-            else if (arg == "--version") {
-                std::cout << myName << " (Nix) " << nixVersion << '\n';
-                return;
-            }
+            else if (arg == "--version")
+                printVersion(myName);
 
             else if (arg == "--add-drv-link") {
                 drvLink = "./derivation";