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-rw-r--r--var/spack/repos/builtin/packages/r/package.py5
1 files changed, 5 insertions, 0 deletions
diff --git a/var/spack/repos/builtin/packages/r/package.py b/var/spack/repos/builtin/packages/r/package.py
index 837b140bbc..6418d11ebf 100644
--- a/var/spack/repos/builtin/packages/r/package.py
+++ b/var/spack/repos/builtin/packages/r/package.py
@@ -210,6 +210,11 @@ class R(AutotoolsPackage):
r_libs_path = ':'.join(r_libs_path)
env.set('R_LIBS', r_libs_path)
+ # R_LIBS_USER gets set to a directory in HOME/R if it is not set, such as
+ # during package installation with the --vanilla flag. Set it to null
+ # to ensure that it does not point to a directory that may contain R
+ # packages.
+ env.set('R_LIBS_USER', '')
env.set('R_MAKEVARS_SITE',
join_path(self.etcdir, 'Makeconf.spack'))