From 8b0dc4491d615d0c46af62f8699270caaeb196c5 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 21 Aug 2017 01:18:47 +0300
Subject: Don't clean version

---
 buildfile | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/buildfile b/buildfile
index 4e098b2..00e013f 100644
--- a/buildfile
+++ b/buildfile
@@ -4,8 +4,13 @@
 
 ./: tests/ doc{INSTALL LICENSE NEWS README version} file{manifest}
 
-doc{version}: file{manifest} # Generated by the version module.
-doc{version}: dist = true
+# The version file is auto-generated (by the version module) from manifest.
+# Include it in distribution and don't remove when cleaning in src (so that
+# clean results in a state identical to distributed).
+#
+doc{version}: file{manifest}
+doc{version}: dist  = true
+doc{version}: clean = ($src_root != $out_root)
 
 # Don't install tests or the INSTALL file.
 #
-- 
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