gnu/packages/patches/python-2.7-source-date-epoch.patch

   1 Honor the 'SOURCE_DATE_EPOCH' environment variable to allow for
   2 determinitic builds.
   3
   4 --- a/Lib/py_compile.py
   5 +++ b/Lib/py_compile.py
   6 @@ -105,7 +105,10 @@ def compile(file, cfile=None, dfile=None, doraise=False):
   7      """
   8      with open(file, 'U') as f:
   9          try:
  10 -            timestamp = long(os.fstat(f.fileno()).st_mtime)
  11 +            if 'SOURCE_DATE_EPOCH' in os.environ:
  12 +                timestamp = long(os.environ['SOURCE_DATE_EPOCH'])
  13 +            else:
  14 +                timestamp = long(os.fstat(f.fileno()).st_mtime)
  15          except AttributeError:
  16              timestamp = long(os.stat(file).st_mtime)
  17          codestring = f.read()
  18 diff --git a/Python/import.c b/Python/import.c
  19 index e47ce63..7eecf9c 100644
  20 --- a/Python/import.c
  21 +++ b/Python/import.c
  22 @@ -945,6 +945,11 @@ write_compiled_module(PyCodeObject *co, char *cpathname, struct stat *srcstat, t
  23      /* Now write the true mtime (as a 32-bit field) */
  24      fseek(fp, 4L, 0);
  25      assert(mtime <= 0xFFFFFFFF);
  26 +    if (Py_GETENV("SOURCE_DATE_EPOCH") != NULL) {
  27 +       const char *epoch = Py_GETENV("SOURCE_DATE_EPOCH");
  28 +       mtime = atoi(epoch);
  29 +    }
  30 +
  31      PyMarshal_WriteLongToFile((long)mtime, fp, Py_MARSHAL_VERSION);
  32      fflush(fp);
  33      fclose(fp);