Platformio and barebones ATTiny85/Atmega - PlatformIO Community

Hello people, Although I’ve done some work with arduino, I’m fairly new to embedded development and I have some concepts that I have not grasped yet. I’m trying to program an ATTiny85 chip WITHOUT using the arduino library. Will I manage it by using this connection diagram and and USBTinyisp? What kind of setup does platform.IO needs for programming a barebones microcontroller? Do I need a bootloader for that (I’m assuming that no, because a bootloader is a program that enables the chip

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