From 69421194a5b578c6bb3ff251e7ef2fc63d7ac175 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Thu, 3 Dec 2009 15:01:54 +0000
Subject: [PATCH] nix-prefetch-svn: Support $NIX_PREFETCH_SVN_LEAVE_DOT_SVN.

svn path=/nixpkgs/trunk/; revision=18789
---
 pkgs/build-support/fetchsvn/nix-prefetch-svn | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/fetchsvn/nix-prefetch-svn b/pkgs/build-support/fetchsvn/nix-prefetch-svn
index b9d10fea21ca..2858a0b01ab1 100755
--- a/pkgs/build-support/fetchsvn/nix-prefetch-svn
+++ b/pkgs/build-support/fetchsvn/nix-prefetch-svn
@@ -48,7 +48,14 @@ if test -z "$finalPath"; then
     trap "rm -rf $tmpPath" EXIT
 
     # Perform the checkout.
-    echo p | svn export --quiet -r "$rev" "$url" $tmpFile >&2
+    if test "$NIX_PREFETCH_SVN_LEAVE_DOT_SVN" != 1
+    then
+	command="export"
+    else
+	command="checkout"
+    fi
+
+    echo p | svn "$command" --quiet -r "$rev" "$url" "$tmpFile" >&2
 
     # Compute the hash.
     hash=$(nix-hash --type $hashType $hashFormat $tmpFile)