Glenn Johnson ccc7ed0af9 Add --vanilla flag to r build system (#22166) ... Unlike the other commands of the `R CMD` interface, the `INSTALL` command will read `Renviron` files. This can potentially break builds of r- packages, depending on what is set in the `Renviron` file. This PR adds the `--vanilla` flag to ensure that neither `Rprofile` nor `Renviron` files are read during Spack builds of r- packages.		2021-03-08 15:53:12 -07:00
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spack	Add --vanilla flag to r build system (#22166)	2021-03-08 15:53:12 -07:00