PlatformIO has that feature. Please enable prompts:

$ settings set enable_prompts yes

# then try to process project without installed platforms
$ platformio run

I can't install something without user's confirmation. Each development platform consists from the several packages which will be unpacked and will consume ~100-150Mb of disk. Also, that operation requires "Internet" to install it. User should confirm this operation. I don't like when someone installs something without my confirmation.

from platformio-core.

I always run without promost. Just give a setting to override to make it
work with no prompts.

On Thursday, December 25, 2014, Ivan Kravets [email protected]
wrote:

PlatformIO has that feature. Please enable prompts:

$ settings set enable_prompts yes

then try to process project without installed platforms

$ platformio run

I can't install something without user's confirmation. Each development
platform consists from the several packages which will be unpacked and will
consume ~100-150Mb of disk. Also, that operation requires "Internet" to
install it. User should confirm this operation. I don't like when someone
installs something without my confirmation.

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from platformio-core.