Remove/patch metadata timestamps for reproducibility.

diff -ur fpcbuild-3.0.0.old/fpcsrc/packages/fpmkunit/src/fpmkunit.pp fpcbuild-3.0.0/fpcsrc/packages/fpmkunit/src/fpmkunit.pp
--- fpcbuild-3.0.0.old/fpcsrc/packages/fpmkunit/src/fpmkunit.pp	2015-11-04 16:17:00.000000000 -0500
+++ fpcbuild-3.0.0/fpcsrc/packages/fpmkunit/src/fpmkunit.pp	2017-01-26 16:25:29.327339282 -0500
@@ -3779,7 +3779,7 @@
       Values[KeyName]:=Name;
       Values[KeyVersion]:=Version;
       // TODO Generate checksum based on PPUs
-      InstalledChecksum:=DateTimeToFileDate(Now);
+      InstalledChecksum:=0;
       Values[KeyChecksum]:=IntToStr(InstalledChecksum);
       Values[KeyCPU]:=CPUToString(ACPU);
       Values[KeyOS]:=OSToString(AOS);
diff -ur fpcbuild-3.0.0.old/fpcsrc/utils/fpcmkcfg/fpcmkcfg.pp fpcbuild-3.0.0/fpcsrc/utils/fpcmkcfg/fpcmkcfg.pp
--- fpcbuild-3.0.0.old/fpcsrc/utils/fpcmkcfg/fpcmkcfg.pp	2013-06-01 18:27:16.000000000 -0400
+++ fpcbuild-3.0.0/fpcsrc/utils/fpcmkcfg/fpcmkcfg.pp	2017-01-26 16:24:22.949044903 -0500
@@ -234,8 +234,8 @@
   TemplateParser.Values['FPCTARGETOS'] := BuildOSTarget;
   TemplateParser.Values['FPCBIN'] := 'fpc';
   TemplateParser.Values['PWD'] := GetCurrentDir;
-  TemplateParser.Values['BUILDDATE'] := DateToStr(Date);
-  TemplateParser.Values['BUILDTIME'] := TimeToStr(Time);
+  TemplateParser.Values['BUILDDATE'] := '';
+  TemplateParser.Values['BUILDTIME'] := '';
 
   TemplateParser.Values['LOCALREPOSITORY'] := GetDefaultLocalRepository;
   TemplateParser.Values['LOCALBASEPATH'] := GetDefaultLocalBasepath;
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<div class='path'>path: <a href='/guix/log/?id=8a8fb17d5c95f180cb163a6e7355658d8d606e7e'>root</a>/<a href='/guix/log/gnu?id=8a8fb17d5c95f180cb163a6e7355658d8d606e7e'>gnu</a>/<a href='/guix/log/gnu/tests?id=8a8fb17d5c95f180cb163a6e7355658d8d606e7e'>tests</a>/<a href='/guix/log/gnu/tests/nfs.scm?id=8a8fb17d5c95f180cb163a6e7355658d8d606e7e'>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=8a8fb17d5c95f180cb163a6e7355658d8d606e7e&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-11-07 12:48:24 +0100'>2020-11-07</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=7286c9b1879453ea4e0a08e91cc48706d8887f37'>tests: nfs-root-fs: Use the right store file name.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/nfs.scm (run-nfs-root-fs-test): Pass "nfs-root-fs-test" as
the first argument to 'gexp-&gt;derivation'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-09-10 18:57:46 +0200'>2020-09-10</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=c41a8572efa69c5b29002245090db653f87e6da8'>tests: nfs: Improve "nfs-root-fs".</a><span class='msg-avail'>...<span class='msg-tooltip'>Follow-up to a1a39ed5a46044161a71cbe6931c7e3006a82ecb.

* gnu/tests/nfs.scm (run-nfs-root-fs-test): Improve tests.
(%test-nfs-root-fs)[description]: Modify.
</span></span></td><td>Danny Milosavljevic</td></tr>
<tr><td><span title='2020-09-07 18:58:39 +0200'>2020-09-07</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=c4fe53bd118577fd45180a37f3dc68f70a510846'>tests: nfs: Improve "nfs-root-fs".</a><span class='msg-avail'>...<span class='msg-tooltip'>Follow-up to a1a39ed5a46044161a71cbe6931c7e3006a82ecb.

* gnu/tests/nfs.scm (run-nfs-root-fs-test): Improve tests.
</span></span></td><td>Danny Milosavljevic</td></tr>
<tr><td><span title='2020-09-07 15:32:29 +0200'>2020-09-07</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=a1a39ed5a46044161a71cbe6931c7e3006a82ecb'>tests: Add "nfs-root-fs" system test.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/nfs.scm (run-nfs-root-fs-test): New procedure.
(%test-nfs-root-fs): New variable.  Export it.

Signed-off-by: Danny Milosavljevic &lt;dannym@scratchpost.org&gt;
</span></span></td><td>Stefan</td></tr>
<tr><td><span title='2020-03-25 14:17:24 +0100'>2020-03-25</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=eb019af8d84ad168d6cb11c011842fb0c8303f20'>tests/nfs: Fix use of WAIT-FOR-FILE.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/nfs.scm ("nfs services are running"): Pass marionette to
WAIT-FOR-FILE.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-03-16 22:58:37 +0100'>2020-03-16</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=a55472955d7dbe7385fb25a5c31b26f8ebfa6e93'>tests: nfs-server: Use marionette helper procedures.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/nfs.scm (run-nfs-server-test)[test](wait-for-file): Remove.
("nscd is listening on its socket"): Use 'wait-for-unix-socket'.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-03-16 14:05:52 +0100'>2020-03-16</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=e8cec7cc120fc95b2e869a1834a01e257e0f63c8'>tests: nfs: Ensure 'rpcinfo' can be found.</a><span class='msg-avail'>...<span class='msg-tooltip'>The test was failing since 8b9cad01e9619f53dc5a65892ca6a09ca5de3447.

* gnu/tests/nfs.scm (run-nfs-test)[test]("RPC service running"): Add
'setenv' call for PATH.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-08 23:56:16 +0100'>2020-01-08</span></td><td><a href='/guix/commit/gnu/tests/nfs.scm?id=907eeac2e7d5d9c10b65038d486876e577c80d85'>services: nfs: Add nfs-service-type.</a><span class='msg-avail'>...<span class='msg-tooltip'>* 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.
</span></span></td><td>Ricardo Wurmus</td></tr>