Why do I have to create the directory "~/R/%p-library/%v" by hand on each R upgrade?
r
Solution
One thing you could try is specifying an `R_LIBS` in a `.REnviron` file in your `$HOME$` directory, for instance I am on Windows at work so the first line in my `.REnviron` is something like `R_LIBS="C:\Some\path\library"`.
Then when you come to update from a major version change you can just use:
update.packages( lib.loc = .libPaths()[1] , checkBuilt = TRUE )
To find out your `$HOME$` directory use:
Sys.getenv("HOME")
Problem
Every time `R` is upgraded, I have to reinstall the packages I use (from sources,so they have to be recompiled for the new version). This is a correct, understandable behavior, so I invoke `install.packages` - and get an error because the user-writable directory `"~/R/%p-library/%v"` does not exist yet and all the other directories in `.libPaths()` are under `/usr/` and are not user-writable. This behavior is documented in the referenced pages. So, after getting the install error, I have to do this: ``` > dir.create(Sys.getenv("R_LIBS_USER")) > .libPaths(Sys.getenv("R_LIBS_USER")) > install.packages(c("igraph","entropy",...)) ``` My question is: how do people deal with this issue? Create the directory by hand after each upgrade? (but isn't that tedious?) Add the `dir.create` call to `.Rprofile`? (apparently not) EDIT: I seem to recall that, when I started to use `R`, this library directory appeared without my action; but I might be wrong...