As per the attached screenshot I put together a simplified version of a schematic which gets an ERC error “Input Power pin not driven by any Output Power pins” even though the PWR_FLAG’s are set on the power sources.
The error goes away when removing the R8 resistor, however as this is only a simplified schematic to demonstrate the issue I can’t remove R8. I am using Kicad v7.0.9, what is the solution to this issue?
the solution is to place a power flag to pin 1 of U2.
That works, however doing so doesn’t make sense to me 
Is it a matter of Kicad’s ERC not understanding R8 is just a wire going through from VCC?
that’s it. ERC cannot tell apart a resistor from a capacitor or from a jumper. (that’s what you are there for) 
ERC is not what you could describe as AI. 
An input must be directly attached to an output for ERC to be happy. Anything between the input and an output causes ERC to go hysterical. Either do as @Claudio.Lorini says or ignore the warning or change the input pin type to “Passive”.
I thought about that, but coming from a Software background doing so felt so dirty that it had to be wrong.
At KiCad forum it was said several dozen times that ERC is only a rule-tester and certainly does not think or understand anything
An electronic designer comment: this is actually desirable, as it lets you connect two nets named differently without ERC throwing warnings/errors. Symbol “net_tie” does the same… it’s just a wire.
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