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-rw-r--r--gnu-system.am2
-rw-r--r--gnu/packages/patches/python-2-deterministic-build-info.patch17
-rw-r--r--gnu/packages/patches/python-3-deterministic-build-info.patch17
-rw-r--r--gnu/packages/python.scm2
4 files changed, 38 insertions, 0 deletions
diff --git a/gnu-system.am b/gnu-system.am
index c7a17a42e9..71b914442f 100644
--- a/gnu-system.am
+++ b/gnu-system.am
@@ -669,8 +669,10 @@ dist_patch_DATA =						\
   gnu/packages/patches/pybugz-encode-error.patch		\
   gnu/packages/patches/pybugz-stty.patch			\
   gnu/packages/patches/pyqt-configure.patch			\
+  gnu/packages/patches/python-2-deterministic-build-info.patch	\
   gnu/packages/patches/python-2.7-search-paths.patch		\
   gnu/packages/patches/python-2.7-source-date-epoch.patch	\
+  gnu/packages/patches/python-3-deterministic-build-info.patch	\
   gnu/packages/patches/python-3-search-paths.patch		\
   gnu/packages/patches/python-disable-ssl-test.patch		\
   gnu/packages/patches/python-fix-tests.patch			\
diff --git a/gnu/packages/patches/python-2-deterministic-build-info.patch b/gnu/packages/patches/python-2-deterministic-build-info.patch
new file mode 100644
index 0000000000..25a079fe90
--- /dev/null
+++ b/gnu/packages/patches/python-2-deterministic-build-info.patch
@@ -0,0 +1,17 @@
+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__
diff --git a/gnu/packages/patches/python-3-deterministic-build-info.patch b/gnu/packages/patches/python-3-deterministic-build-info.patch
new file mode 100644
index 0000000000..22c372a0cf
--- /dev/null
+++ b/gnu/packages/patches/python-3-deterministic-build-info.patch
@@ -0,0 +1,17 @@
+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__
diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 7f7fa388a1..fa8f203828 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -94,6 +94,7 @@
         "1h7zbrf9pkj29hlm18b10548ch9757f75m64l47sy75rh43p7lqw"))
       (patches (map search-patch
                     '("python-2.7-search-paths.patch"
+                      "python-2-deterministic-build-info.patch"
                       "python-2.7-source-date-epoch.patch")))))
     (build-system gnu-build-system)
     (arguments
@@ -223,6 +224,7 @@ data types.")
                             '("python-fix-tests.patch"
                               ;; XXX Try removing this patch for python > 3.4.3
                               "python-disable-ssl-test.patch"
+                              "python-3-deterministic-build-info.patch"
                               "python-3-search-paths.patch")))
               (patch-flags '("-p0"))
               (sha256