branch staging updated (b5c2e72 -> 0168473)

[guix-commits]

cbaines pushed a change to branch staging
in repository guix.

      from  b5c2e72   gnu: python-requests: Update to 2.21.0.
       new  ab149c6   gnu: ruby-build-system: Change extract-gemspec to always 
return #t.
       new  9be39b4   guix: ruby-build-system: Do gem install --verbose.
       new  0168473   guix: ruby-build-system: Fix removal of extension related 
files.

The 3 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
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Summary of changes:
 guix/build/ruby-build-system.scm | 53 +++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 25 deletions(-)