[MacPorts] #54865: geda-gaf dependency error, it fails to install guile18 if absent from the system

[MacPorts]

#54865: geda-gaf dependency error, it fails to install guile18 if absent from the
system
--------------------+----------------------
 Reporter:  wilya7  |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  geda-gaf
--------------------+----------------------
 While doing a  `port -f clean --all all` i got the following error:

 {{{
 Error: geda-gaf: Error executing useguile18: Package guile-1.8 was not
 found in the pkg-config search path.
 Perhaps you should add the directory containing `guile-1.8.pc'
 to the PKG_CONFIG_PATH environment variable
 No package 'guile-1.8' found
 }}}

 if I do try to install geda-gaf without installing first guile18, this is
 what I get:


 {{{
 Hasbeen-MBP:~ cfusco$ sudo port -d install geda-gaf
 Password:
 DEBUG: Copying /Users/cfusco/Library/Preferences/com.apple.dt.Xcode.plist
 to /opt/local/var/macports/home/Library/Preferences
 DEBUG: Changing to port directory:
 /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/science
 /geda-gaf
 DEBUG: OS darwin/16.7.0 (Mac OS X 10.12) arch i386
 DEBUG: adding the default universal variant
 DEBUG: Reading variant descriptions from
 /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/_resources/port1.0/variant_descriptions.conf
 DEBUG: Executing variant useguile18 provides useguile18
 DEBUG: Package guile-1.8 was not found in the pkg-config search path.
 Perhaps you should add the directory containing `guile-1.8.pc'
 to the PKG_CONFIG_PATH environment variable
 No package 'guile-1.8' found
     while executing
 "exec ${prefix}/bin/pkg-config --cflags guile-1.8"
     (procedure "variant-useguile18" line 12)
     invoked from within
 "variant-useguile18"
 Error: geda-gaf: Error executing useguile18: Package guile-1.8 was not
 found in the pkg-config search path.
 Perhaps you should add the directory containing `guile-1.8.pc'
 to the PKG_CONFIG_PATH environment variable
 No package 'guile-1.8' found
 DEBUG: Error evaluating variants
     while executing
 "error "Error evaluating variants""
     (procedure "mportopen" line 50)
     invoked from within
 "mportopen $porturl [array get options] [array get requested_variations]"
 Error: Unable to open port: Error evaluating variants
 }}}

 This is my system:


 {{{
 Hasbeen-MBP:~ cfusco$ sw_vers
 ProductName:    Mac OS X
 ProductVersion: 10.12.6
 BuildVersion:   16G29
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/54865>
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