[[!comment format=mdwn username="aristidb@4551cc1215222a56e271a796b92908680f3941b5" nickname="aristidb" avatar="http://cdn.libravatar.org/avatar/64e6cb35f87f56a7f13bac236afff510" subject="comment 2" date="2017-02-05T12:49:22Z" content=""" I made a typo in my previous response: It should be ETag, not Etag. Corrected: [[!haskell \"\"\" S3.UploadPartResponse { S3.uprETag = etag } <- sendS3Handle h req \"\"\"] """]]