Setup R without Rtools

[eitsupi]

Is your feature request related to a problem? Please describe.

Installing Rtools on Windows takes quite a bit of time, but there does not appear to be an option to skip this at this time.

Describe the solution you'd like

Specify something like rtools-version: "none" so that we can skip the Rtools installation.

Describe alternatives you've considered

Install R in other ways.

[gaborcsardi]

A current workaround is to create an c:\Rtools43 (or 42, 40, or just c:\Rtools, depending on version) directory before calling setup-r:

actions/setup-r/src/installer.ts

Line 461 in 4e3e721

if (

[yutannihilation]

Just curious, why is Rtools43 not pre-installed in the hosted runners?

In my understanding, Rtools should be installed via chocolatey,

https://github.com/actions/runner-images/blob/060ad1383a7231762cbd2d61a04116a2dc7905e0/images/win/scripts/Installers/Install-R.ps1#L7

and chocolatey should point to Rtools43. So, I thought the setup of Rtools in rlib/action is usually skipped.

https://github.com/facorread/rtools-chocolatey/blob/6524fa5ef2fba631a4cca157e9d60c26d3cb17a1/src/tools/chocolateyInstall.ps1#L6

[gaborcsardi]

Just curious, why is Rtools43 not pre-installed in the hosted runners?

It is preinstalled, AFAICT.

[gaborcsardi]

This will be fixed, once v2 is updated, later today.

[github-actions]

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