[MacPorts] #65834: ghc: ld: symbol(s) not found for architecture x86_64

[MacPorts]

#65834: ghc: ld: symbol(s) not found for architecture x86_64
---------------------+-----------------------
  Reporter:  dbl001  |      Owner:  essandess
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.7.2
Resolution:          |   Keywords:
      Port:  ghc     |
---------------------+-----------------------

Comment (by essandess):

 To be clear, we have a working {{{ghc}}} bootstrap that correctly links
 itself and things it builds to MacPorts libraries including
 {{{libiconv}}}.

 The issue is just setting the {{{depends_*}}} settings correctly so that
 the builds work across a variety of initial states.

 {{{
 port contents ghc | egrep -e '\.dylib$' | xargs otool -L | egrep -E -e
 '^[[:space:]]+/opt/local' | sort -u
         /opt/local/lib/libgmp.10.dylib (compatibility version 15.0.0,
 current version 15.1.0)
         /opt/local/lib/libiconv.2.dylib (compatibility version 9.0.0,
 current version 9.1.0)
         /opt/local/lib/libncurses.6.dylib (compatibility version 6.0.0,
 current version 6.0.0)
 find /opt/local/lib/ghc-9.4.2/bin -type f | xargs otool -L | egrep -E -e
 '^[[:space:]]+/opt/local' | sort -u
         /opt/local/lib/libgmp.10.dylib (compatibility version 15.0.0,
 current version 15.1.0)
         /opt/local/lib/libiconv.2.dylib (compatibility version 9.0.0,
 current version 9.1.0)
         /opt/local/lib/libncurses.6.dylib (compatibility version 6.0.0,
 current version 6.0.0)
 }}}

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Ticket URL: <https://trac.macports.org/ticket/65834#comment:6>
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