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