install.pacakges has an option where you can specify where a package will be installed. For example:
install.packages("ggplot2", lib="/data/Rpackages/")
I use conda environments for package mangement. However, I occasionally run into a Bioconductor package which does not have a recipe. To not pollute my conda environment, I would like anything BiocInstaller installs to be placed in $HOME/R. I don't seen an option for this in the docs.
Is there a way?

And for completeness, I should point out that you could have found this by reading ?biocLite. See under the ... argument
Arguments: pkgs: 'character()' of package names to install or update. A missing value and 'suppressUpdates=FALSE' updates installed packages, perhaps also installing 'Biobase', 'IRanges', and 'AnnotationDbi' if they are not already installed. Package names containing a '/' are treated as github repositories and installed using the 'install_github()' function of the 'remotes' package. suppressUpdates: 'logical(1)' or 'character()'. When 'FALSE', biocLite asks the user whether old packages should be update. When 'TRUE', the user is not prompted to update old packages. When 'character()' a vector specifying which packages to NOT update. suppressAutoUpdate: 'logical(1)' indicating whether the 'BiocInstaller' package updates itself. siteRepos: 'character()' representing an additional repository in which to look for packages to install. This repository will be prepended to the default repositories (which you can see with 'biocinstallRepos'). ask: 'logical(1)' indicating whether to prompt user before installed packages are updated, or the character string 'graphics', which brings up a widget for choosing which packages to update. If TRUE, user can choose whether to update all outdated packages without further prompting, to pick and choose packages to update, or to cancel updating (in a non-interactive session, no packages will be updated). Otherwise, the value is passed to 'update.packages'. ...: Additional arguments. When installing CRAN or Bioconductor packages, typical arguments include: 'lib.loc', passed to 'old.packages' and used to determine the library location of installed packages to be updated; and 'lib', passed to 'install.packages' to determine the library location where 'pkgs' are to be installed.