diff --git a/debian/changelog b/debian/changelog
index c7552a0..b0b8b1a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+ubuntu-dev-tools (0.105) UNRELEASED; urgency=low
+
+  * pbuilder-dist, doc/pbuilder-dist.1:
+     - Export the distribution and architecture information to the environment
+       so that it is available in pbuilderrc, etc. (LP: #628933).
+
+ -- Siegfried-Angel Gevatter Pujals <rainct@ubuntu.com>  Sun, 26 Sep 2010 17:36:59 +0200
+
 ubuntu-dev-tools (0.104) experimental; urgency=low
 
   [ Siegfried-Angel Gevatter Pujals ]
diff --git a/doc/pbuilder-dist.1 b/doc/pbuilder-dist.1
index 7666a69..60d8923 100644
--- a/doc/pbuilder-dist.1
+++ b/doc/pbuilder-dist.1
@@ -99,6 +99,11 @@ saved in the results subdirectory of each build environment.
 .PP
 The default authentication method is \fBsudo\fP. You can change this by
 setting the \fBPBUILDAUTH\fP variable.
+.PP
+You may also want to know that \fBpbuilder\-dist\fP exports \fBDIST\fP and
+\fBARCH\fP environment variables to the invoked process, containing the name
+of the distribution and the architecture targeted by the current build. You
+can make use of them, for example, in \fBpbuilderrc\fP.
 
 .SH BUGS
 If you experience any problem with this script contact me on rainct@ubuntu.com
diff --git a/pbuilder-dist b/pbuilder-dist
index 5599cda..5b048a5 100755
--- a/pbuilder-dist
+++ b/pbuilder-dist
@@ -259,7 +259,10 @@ class pbuilder_dist:
 				return argument
 			return '"%s"' % argument
 		
-		return '%s /usr/sbin/%s %s' % (self.auth, self.builder,
+		# Export the distribution and architecture information to the
+		# environment so that it is accessible to ~/.pbuilderrc (LP: #628933).
+		return '%s ARCH="%s" DIST="%s" /usr/sbin/%s %s' % (self.auth,
+			self.build_architecture, self.target_distro, self.builder,
 			' '.join(map(quote, arguments)))
 
 def ask(question):