Always provide the same date and time in 'Py_GetBuildInfo'.
This is the information shown at the REPL and in 'sys.version'.
We cannot pass it in CPPFLAGS due to whitespace in the DATE string.

--- a/Modules/getbuildinfo.c
+++ b/Modules/getbuildinfo.c
@@ -4,6 +4,10 @@
 #include <stdio.h>
 #endif
 
+/* Deterministic date and time.  */
+#define DATE "Jan  1 1970"
+#define TIME "00:00:01"
+
 #ifndef DATE
 #ifdef __DATE__
 #define DATE __DATE__
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<tr><td><span title='2020-04-04 23:17:55 -0500'>2020-04-04</span></td><td><a href='/guix/commit/gnu/packages/patches/xplanet-1.3.1-libimage_gif.c.patch?id=77704cb13e5bebf412297dab764a00849a3cfdc0'>gnu: Add xplanet.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/patches/xplanet-1.3.1-cxx11-eof.patch,
gnu/packages/patches/xplanet-1.3.1-libdisplay_DisplayOutput.cpp.patch,
gnu/packages/patches/xplanet-1.3.1-libimage_gif.c.patch,
gnu/packages/patches/xplanet-1.3.1-xpUtil-Add2017LeapSecond.cpp.patch: New
files.
* gnu/packages/astronomy.scm (xplanet): New variable.
[source]: Use patches.
* gnu/local.mk (dist_patch_DATA): Add them.

Signed-off-by: Eric Bavier &lt;bavier@member.fsf.org&gt;
</span></span></td><td>R Veera Kumar</td></tr>