Preliminary RPackage class (#2761)

var/spack/repos/builtin/packages/r-praise/package.py

@@ -25,7 +25,7 @@
 from spack import *
 
 
-class RPraise(Package):
+class RPraise(RPackage):
     """Build friendly R packages that praise their users if they have done
     something good, or they just need it to feel better."""
 
@@ -33,9 +33,3 @@ class RPraise(Package):
     url      = "https://cran.r-project.org/src/contrib/praise_1.0.0.tar.gz"
 
     version('1.0.0', '9318724cec0454884b5f762bee2da6a1')
-
-    extends('r')
-
-    def install(self, spec, prefix):
-        R('CMD', 'INSTALL', '--library={0}'.format(self.module.r_lib_dir),
-          self.stage.source_path)