[MacPorts] #59318: portindex likely uses the wrong stdlib on < 10.9

[MacPorts]

#59318: portindex likely uses the wrong stdlib on < 10.9
--------------------+--------------------
 Reporter:  mojca   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  base    |    Version:
 Keywords:          |       Port:
--------------------+--------------------
 Considering the following `Portfile`:
 {{{
 PortSystem          1.0

 name                test
 version             1
 platforms           darwin

 # this one seems to be missing from portindex
 platform darwin12 {
     subport t1 {}
 }

 # correctly detected
 if {${os.platform} eq "darwin" && ${os.major} == 12} {
     subport t_darwin12 {}
 }

 # when called with portindex -p macosx_12_i386, this will only add a
 subport y_stdlibcxx
 if {${configure.cxx_stdlib} eq "libc++"} {
     subport t_libcxx {}
 } else {
     subport t_stdlibcxx {}
 }
 }}}

 {{{
 $ portindex -p macosx_13_i386 -o darwin13
 Creating port index in /path/to/darwin13
 Adding port test/test
 Adding subport t_libcxx

 Total number of ports parsed:   2
 Ports successfully parsed:      2
 Ports failed:                   0
 Up-to-date ports skipped:       0
 }}}
 {{{
 $ portindex -p macosx_12_i386 -o darwin12
 Creating port index in /path/to/darwin12
 Adding port test/test
 Adding subport t_darwin12
 Adding subport t_stdlibcxx

 Total number of ports parsed:   3
 Ports successfully parsed:      3
 Ports failed:                   0
 Up-to-date ports skipped:       0
 }}}

 We should probably fix the defaults for `portindex`, and likely remove the
 recently introduced parser that allows generating portindex for
 `macosx_12_i386_libcxx`.

-- 
Ticket URL: <https://trac.macports.org/ticket/59318>
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