[MacPorts] #25330: sane-backends 1.0.21 and variants to limit which backends are built

[MacPorts]

#25330: sane-backends 1.0.21 and variants to limit which backends are built
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 Reporter:  aguynamedryan+macports@…          |       Owner:  macports-tickets@…                   
     Type:  enhancement                       |      Status:  new                                  
 Priority:  Normal                            |   Milestone:                                       
Component:  ports                             |     Version:  1.9.1                                
 Keywords:  haspatch                          |        Port:  sane-backends                        
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Comment(by aguynamedryan+macports@…):

 Replying to [comment:5 snc@…]:

 In the patch I've submitted I'm using the configure.env-append command to
 add the BACKENDS variable to the environment.

 Can I somehow use configure.env from the command line before I invoke port
 install?

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Ticket URL: <http://trac.macports.org/ticket/25330#comment:6>
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