Installation on R 3.6 is broken

[vtdmhd]

The commit 1bba551 removed the R version check in inst/include/cpp11/environment.hpp that previously wrapped R_removeVarFromFrame, along with the fallback code for older R versions. As a result, the package no longer installs on R 3.6.

However, the CRAN DESCRIPTION still lists R (>= 3.6) as supported.

To resolve this, either:

• Restore the compatibility fallback for R_removeVarFromFrame in environment.hpp, or
• End R 3.6 support and update the DESCRIPTION to require R >= 4.0.

[vtdmhd]

Reverting inst/include/cpp11/environment.hpp to its state before the aforementioned commit allows the package to be installed and loaded on R 3.6. I haven't tested further.

[krlmlr]

Thanks. Adding R >= 4.1 as a dependency for the next release to make it explicit. Older versions will need to be maintained elsewhere. Would you like to share a link to a branch that reverts the relevant file?

[vtdmhd]

Would you like to share a link to a branch that reverts the relevant file?

@krlmlr

https://github.com/vtdmhd/duckdb-r/tree/r-3x-compat

I've tested it on R 3.6.3, package gets installed successfully with these modifications.

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