ports/184339: lang/python27 does not allow unsetting NLS (or other options)

[Gerald Pfeifer]

>Number:         184339
>Category:       ports
>Synopsis:       lang/python27 does not allow unsetting NLS (or other options)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Nov 27 23:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Gerald Pfeifer
>Release:        FreeBSD 10.0-BETA3 i386
>Organization:
>Environment:
>Description:
By default, ports behave as follows on my systems (or ref10-i386):
  
  % lang/gcc48> make -V PORT_OPTIONS   
  BOOTSTRAP DOCS EXAMPLES IPV6 JAVA NLS
  
That is NLS is enabled, but can be disabled:
  
  lang/gcc48% env WITHOUT_NLS=1 make -V PORT_OPTIONS
  BOOTSTRAP DOCS EXAMPLES IPV6 JAVA
  lang/gcc48% env OPTIONS_UNSET=NLS make -V PORT_OPTIONS
  BOOTSTRAP DOCS EXAMPLES IPV6 JAVA

However, with lang/python27 this does not work?

  lang/python27% env WITHOUT_NLS=1 make -V PORT_OPTIONS
  DOCS EXAMPLES IPV6 NLS PYMALLOC THREADS UCS4
  lang/python27% env OPTIONS_UNSET=NLS make -V PORT_OPTIONS
  DOCS EXAMPLES IPV6 NLS PYMALLOC THREADS UCS4
  
(This is not specific to NLS, same for options like IPV6 or UCS4.)

>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: