Upload build/build_mix.py with huggingface_hub

build/build_mix.py

@@ -42,6 +42,15 @@ import struct
 import sys
 import time
 
+# Sibling modules (hubsync, ounce100m_credentials) live beside this file, not in any package, and a job
+# started as `python build/build_mix.py` gets only the script's own directory on sys.path -- which is
+# build/, so the credentials import inside hubsync fails and the whole run refuses to be interruption-
+# safe (E-021's lesson, hit again from the other direction). Add both this directory and its parent.
+_HERE = os.path.dirname(os.path.abspath(__file__))
+for _p in (_HERE, os.path.dirname(_HERE)):
+    if _p not in sys.path:
+        sys.path.insert(0, _p)
+
 MAGIC_FLAGS = 0
 TOKENS_PER_SHARD = 8_000_000    # 16 MB as uint16; ~140 shards for 1.1B tokens
 MERGE_BATCH_DOCS = 32           # granularity of the round-robin; ~20k tokens, so a 262k batch spans ~13