WIP: [R-package] [ci] test on R 4.0 and 4.5 #7025
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jameslamb
commented
Sep 10, 2025
| task: r-package | ||
| compiler: gcc | ||
| r_version: 4.3 | ||
| r_version: latest |
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For now, proposing that we use keys "latest" and "oldest" in the config and use the following specific versions in scripts:
| OS | oldest R | latest R |
|---|---|---|
| linux | 4.2.0 | 4.5.1 |
| macos | 4.0.5 | 4.5.1 |
| Windows | 4.3.1 | 4.5.1 |
It's difficult to test R 4.0.x on Linux in CI here because 4.2.0 is the oldest version available at https://cloud.r-project.org/bin/linux/ubuntu/jammy-cran40/
It's difficult to test R 4.0.x on Windows because rtools40 bundled different tools than later RTools, and I hadn't yet been able to figure out how to get them to interact nicely with Visual Studio 2022: https://github.com/microsoft/LightGBM/actions/runs/17572546785
jameslamb
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jameslamb
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Proposes the following for R CI:
"oldest"and"latest"(see WIP: [R-package] [ci] test on R 4.0 and 4.5 #7025 (comment))Notes for Reviewers
Other changes for removing R 3.x support have been split out into #7038