When trying to install ggtree I get the error that get_aes_var’ is not exported by 'namespace:rvcheck'

```r

BiocManager::install("ggtree")

Error: object ‘get_aes_var’ is not exported by 'namespace:rvcheck'

sessionInfo( )

R version 3.6.3 (2020-02-29) Platform: x86_64-pc-linux-gnu (64-bit) Running under: Ubuntu 18.04.5 LTS

Matrix products: default BLAS/LAPACK: /usr/lib/x86_64-linux-gnu/libopenblasp-r0.2.20.so

locale: [1] LC_CTYPE=en_DK.UTF-8 LC_NUMERIC=C LC_TIME=en_DK.UTF-8 LC_COLLATE=en_DK.UTF-8 LC_MONETARY=en_DK.UTF-8
[6] LC_MESSAGES=en_DK.UTF-8 LC_PAPER=en_DK.UTF-8 LC_NAME=C LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_DK.UTF-8 LC_IDENTIFICATION=C

attached base packages: [1] stats graphics grDevices utils datasets methods base

loaded via a namespace (and not attached): [1] magrittr_2.0.1 tidyselect_1.1.0 munsell_0.5.0 colorspace_2.0-2 R6_2.5.1 rlang_0.4.11 fansi_0.5.0
[8] dplyr_1.0.7 tools_3.6.3 grid_3.6.3 gtable_0.3.0 utf8_1.2.2 DBI_1.1.1 ellipsis_0.3.2
[15] assertthat_0.2.1 tibble_3.1.4 lifecycle_1.0.0 crayon_1.4.1 BiocManager_1.30.16 purrr_0.3.4 ggplot2_3.3.5
[22] vctrs_0.3.8 yulab.utils_0.0.2 glue_1.4.2 ggfun_0.0.4 compiler_3.6.3 pillar_1.6.2 rvcheck_0.2.0

I think the easiest solution would be to update your version of R to the latest (4.1.1) and then reinstall the ggtree package.

The reason you're running into this error is because the latest version of rvcheck (0.2.0) has removed the get_aes_var function. The current ggtree version (3.0.4) is aware of this change, and doesn't look for it. However, because you're using an old version of R, you're using also using an old version of both Bioconductor and subsequently the ggtree package. This older version still thinks get_aes_var should be present, and then fails when it isn't.