"Adafruit Unified Sensor" missing from the 'depends' statement in 'library.properties' file about adafruit_veml7700 HOT 6 CLOSED

it must be some other part of your code.
https://github.com/adafruit/Adafruit_VEML7700/search?q=Adafruit_Sensor

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The "Adafruit Unified Sensor" library is included on the depends line in the BMP3XX library's properties file. So the behaviour between the two is not consistent, hence surprising and thought you might want them to be consistent.
I was able to workaround this by naming the needed library as a dependency in my ESPHome YAML file, even though it wasn't needed for another project that uses the BMP3XX library.

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yep - but this isnt the BMP3xx library - it does not have that dep :)

from adafruit_veml7700.

Wouldn't compile until I added it.
All I'm trying to bring up is that it may not be needed by Arduino's preprocessor, but that it does seem to be needed for ESPHome's compiler. In the separate project (the one with BMP3xx), that lib wasn't mentioned either, but got included by 'depends', so everything has always compiled fine.
In the VEML's library it's not in 'depends', not mentioned in the docs, and an ESPHome compile fails without it.

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sounds like ESPHome needs to add it then, it isnt a dep for this librayr. please tell ESPHome to fix

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You are correct. Mine was a sloppy workaround - adding the Unified lib must've caused another inclusion that pio needed.
Adjusting the YAML to specify only the 7700 and BusIO libs takes care of it nicely. I'll pass this along to ESPHome if they ever compose a built-in integration for it. I had to build this one as a 'Custom Sensor' by hand, as I had done for the BMP388.
Thanks for the needed details to make this build cleanly.

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