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.

--- Modules/getbuildinfo.c
+++ 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='2024-01-22 11:26:56 +0100'>2024-01-22</span></td><td><a href='/guix/commit/gnu/packages/cross-toolchain.scm?id=937e64537e889752ad7931bd605d686e03020a8d'>gnu: Add gcc-cross-or1k-elf-toolchain.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cross-toolchain.scm (gcc-cross-or1k-elf-toolchain): New
variable.

Change-Id: Iaf7ed60dbbe116a5efbad8e94be9b2dee51faf15
</span></span></td><td>Jean-Pierre De Jesus DIAZ</td></tr>
<tr><td><span title='2023-12-11 13:40:29 +0200'>2023-12-11</span></td><td><a href='/guix/commit/gnu/packages/cross-toolchain.scm?id=f668ab0fd7aee6cf7f216fd107cd71c5c484dda9'>gnu: Add gcc-cross-x86_64-w64-mingw32-toolchain.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cross-toolchain.scm (gcc-cross-x86_64-w64-mingw32-toolchain):
New variable.

Change-Id: I94802e5e7cb218d7afb0ee09871125bae5db933c
Signed-off-by: Efraim Flashner &lt;efraim@flashner.co.il&gt;
</span></span></td><td>Jean-Pierre De Jesus DIAZ</td></tr>
<tr><td><span title='2023-12-11 13:40:12 +0200'>2023-12-11</span></td><td><a href='/guix/commit/gnu/packages/cross-toolchain.scm?id=2479e60094f8b192802b45f49cf4263855faee12'>gnu: Add gcc-cross-i686-w64-mingw32-toolchain.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/cross-toolchain.scm (gcc-cross-i686-w64-mingw32-toolchain):
New variable.

Change-Id: I5d6056fc4943acae03aeaafa587f40ced182b1d4
Signed-off-by: Efraim Flashner &lt;efraim@flashner.co.il&gt;
</span></span></td><td>Jean-Pierre De Jesus DIAZ</td></tr>
<tr><td><span title='2023-12-11 13:37:21 +0200'>2023-12-11</span></td><td><a href='/guix/commit/gnu/packages/cross-toolchain.scm?id=a9a51b0dca2b228ce334bf36db77af015d3b1285'>gnu: Add gcc-cross-avr-toolchain.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/local.mk (GNU_SYSTEM_MODULES): Add cross-toolchain.scm.
* gnu/packages/cross-toolchain.scm (gcc-cross-avr-toolchain): New variable.

Change-Id: Ie768d5cc0663dd57753af1d4ac631b3cafbf9e8c
Signed-off-by: Efraim Flashner &lt;efraim@flashner.co.il&gt;
</span></span></td><td>Jean-Pierre De Jesus DIAZ</td></tr>