Honor SOURCE_DATE_EPOCH when exporting configuration date.
Autoconf-level patch submitted upstream on Wed Apr 13 17:03:23 UTC 2016

--- a/configure
+++ b/configure
@@ -27737,7 +28573,14 @@
 
 
 ## Configuration date
- CONFIG_DATE="`date`"
+ CONFIG_DATE="`date -u`"
+if test -n "$SOURCE_DATE_EPOCH"; then
+  CONFIG_DATE=`date -u -d "@$SOURCE_DATE_EPOCH" 2>/dev/null \
+               || date -u -r "$SOURCE_DATE_EPOCH" 2>/dev/null`
+  if test -z "$CONFIG_DATE"; then
+    as_fn_error $? "malformed SOURCE_DATE_EPOCH" "$LINENO" 5
+  fi
+fi
 
 ## User doing the configuration
  CONFIG_USER="`whoami`@`hostname`"

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<div class='path'>path: <a href='/guix/log/?id=10b44448c97a6fc0f01504954b9b485d498df914&amp;showmsg=1'>root</a>/<a href='/guix/log/gnu?id=10b44448c97a6fc0f01504954b9b485d498df914&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/tests?id=10b44448c97a6fc0f01504954b9b485d498df914&amp;showmsg=1'>tests</a>/<a href='/guix/log/gnu/tests/nfs.scm?id=10b44448c97a6fc0f01504954b9b485d498df914&amp;showmsg=1'>nfs.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/tests/nfs.scm?id=10b44448c97a6fc0f01504954b9b485d498df914'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2020-01-08 23:56:16 +0100'>2020-01-08</span></td><td class='logsubject'><a href='/guix/commit/gnu/tests/nfs.scm?id=907eeac2e7d5d9c10b65038d486876e577c80d85'>services: nfs: Add nfs-service-type.</a></td><td>Ricardo Wurmus</td></tr>
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* gnu/services/nfs.scm (&lt;nfs-configuration&gt;): New record.
(nfs-configuration, nfs-configuration?, nfs-configuration-nfs-utils,
nfs-configuration-nfs-version, nfs-configuration-exports,
nfs-configuration-rpcmountd-port, nfs-configuration-rpcstatd-port,
nfs-configuration-rpcbind, nfs-configuration-idmap-domain,
nfs-configuration-nfsd-port, nfs-configuration-nfsd-threads,
nfs-configuration-pipefs-directory, nfs-configuration-debug,
nfs-shepherd-services): New procedures.
(nfs-service-type): New variable.
* doc/guix.texi (Network File System): Document it.
* gnu/tests/nfs.scm (%test-nfs-server): New variable.
(%base-os): Use default value of rpcbind-service-type.


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