Ensure ENV is pristine for each installation

Because we modified the ENV global each install this propagated to consecutive
formulae. So exec a new brew process each install. This is the safest way
although Ruby exceptions don't propagate to the parent process so I worry
about it somewhat.

2 files changed, 2 insertions, 2 deletions

diff --git a/Library/Homebrew/brew.h.rb b/Library/Homebrew/brew.h.rb
index a858a0bf2..8f5408e1b 100644
--- a/Library/Homebrew/brew.h.rb
+++ b/Library/Homebrew/brew.h.rb
@@ -179,7 +179,7 @@ def prune
   else
     # always showing symlinks text is deliberate
     print "Pruned #{$n} symbolic links "
-    print "and #{$n} directories " if $d > 0
+    print "and #{$d} directories " if $d > 0
     puts  "from #{HOMEBREW_PREFIX}"
   end
 end
diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index 69e11983d..a2ef1701c 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -38,7 +38,7 @@ class Keg <Pathname
     # these dirs REMEMBER that *NOT* everything needs to be in the main tree
     link_dir('etc') {:mkpath}
     link_dir('bin') {:link}
-    link_dir('lib') {|path| :mkpath if %w[pkgconfig php].include? path.to_s}
+    link_dir('lib') {|path| :mkpath if %w[pkgconfig php perl5].include? path.to_s}
     link_dir('include') {:link}
     link_dir('share') {|path| :mkpath if mkpaths.include? path.to_s}