Hi everyone. A simple question. Can I add a new field to a stream before loading it? I already tried stream_maps config in the tap like in the screenshot. But I got "...raise MapExpressionError(singer_sdk.exceptions.MapExpressionError: Failed to evaluate simpleeval expressions datetime.datetime.now().""" all the time. I also tested the example in the SDK documentation that is in here: https://sdk.meltano.com/en/latest/stream_maps.html#add-a-property-with-a-string-literal-value but the issue still persists like "... Failed to evaluate simpleeval expressions client-123". More, there are other errors in the terminal like "...raise NameNotDefined(node.id, self.expr)singer_sdk.helpers._simpleeval.NameNotDefined: 'datetime' is not defined for expression 'datetime.datetime.now()'" . Did you ever face the issue like that? Is it applicable?

Hi @Emre Üstündağ Which tap is this?

datetime

support was added to stream maps a long while ago (v0.14.0 of singer-sdk) but the tap might be on an even older version.

tap-amazon-sp hotgluexyz variant

Yeah, so that tap is on a really old version of the SDK: https://gitlab.com/hotglue/tap-amazon-seller/-/blob/main/pyproject.toml?ref_type=heads#L15 It's on

^0.4.4

, which is equivalent to

>=0.4.4 <0.5.0

, which is gonna get you at most

0.4.9

(released May 12, 2022). It might be worth forking the tap to bump the version.

I got that. thanks

Ah yeah, that was an option too of course. Glad you figured it out!