[SCM] guix source archive branch, master, updated. v0.1-172-gdc5669c

[Mark H. Weaver]

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- Log -----------------------------------------------------------------
commit dc5669cd654019994fa59ab26db59c292332ae55
Author: Mark H Weaver <address@hidden>
Date:   Tue Feb 12 01:24:21 2013 -0500

    Build newest versions unless specified, and implement upgrades.
    
    * gnu/packages.scm (find-newest-available-packages):
      New exported procedure.
    
    * guix-build.in (newest-available-packages, find-best-packages-by-name):
      New procedures.
      (find-package): Use find-best-packages-by-name, to guarantee that
      if a version number is not specified, only the newest versions will
      be considered.
    
    * guix-package.in (%options): Add --upgrade/-u option.
      (newest-available-packages, find-best-packages-by-name, upgradeable?):
      New procedures.
      (find-package): Use find-best-packages-by-name, to guarantee that
      if a version number is not specified, only the newest versions will
      be considered.
      (process-actions): Implement upgrade option.
    
    * doc/guix.texi (Invoking guix-package): In the description of --install,
      mention that if no version number is specified, the newest available
      version will be selected.

-----------------------------------------------------------------------

Summary of changes:
 doc/guix.texi    |    7 +++--
 gnu/packages.scm |   26 ++++++++++++++++++-
 guix-build.in    |   20 ++++++++++++--
 guix-package.in  |   73 ++++++++++++++++++++++++++++++++++++++++++++---------
 4 files changed, 106 insertions(+), 20 deletions(-)


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