[MacPorts] #14564: port -uR upgrade doesn't upgrade dependencies

[MacPorts]

#14564: port -uR upgrade doesn't upgrade dependencies
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 Reporter:  waltman-macports at mawode.com  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  defect                       |      Status:  new                                  
 Priority:  Normal                       |   Milestone:                                       
Component:  ports                        |     Version:  1.6.0                                
 Keywords:                               |  
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 I ran "port sync; port outdated" and saw that libpng was out of date.  The
 manpage for port(1) lists among its options:

 -R       also upgrade dependents (only for upgrading)
 -u       uninstall non-active ports when upgrading and uninstalling

 So I figured that running "port -uR upgrade libpng" would upgrade any
 packages that depend on libpng, and then remove the old copies. But
 instead of doing that, it just upgraded itself. Then it complained that it
 couldn't remove the old copy because aterm depended it it:

 --->  Unable to uninstall libpng 1.2.24_0+darwin_8, the following ports
 depend on it:
 --->    aterm
 Error: Uninstall libpng 1.2.24_0+darwin_8 failed: Please uninstall the
 ports that depend on libpng first.

 That error message was repeated 6 times.

 There seem to be several potential bugs here:

 * If aterm depends on a specific version of libpng, why wasn't it rebuilt?

 * If aterm doesn't need to be rebuilt (e.g. it can use either 1.2.24 or
 1.2.25 via symlinks in /opt/local/lib), then why is it an error to unstall
 the old package?

 * Why was the error message repeated 6 times?

-- 
Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/14564>
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