pkg/54602: print/electrix 0.2.0nb64 fails build

[scole_mail%gmx.com@localhost]

>Number:         54602
>Category:       pkg
>Synopsis:       print/electrix 0.2.0nb64 fails build
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Oct 05 17:40:00 +0000 2019
>Originator:     scole_mail
>Release:        pkgsrc-2019Q3
>Organization:
none
>Environment:
NetBSD dstar.dstar.net 8.1_STABLE NetBSD 8.1_STABLE (GENERIC) #0: Tue Sep 17 13:57:09 PDT 2019  scole%dstar.dstar.net@localhost:/home/scole/nbsd/cvs/8_0/obj/sys/arch/i386/compile/GENERIC i386
>Description:
electrix-0.2.0nb64 from pkgsrc-2019Q3 doesn't build on my i386 NetBSD 8.1 machine:

...
===> Overriding tools for electrix-0.2.0nb64
===> Extracting for electrix-0.2.0nb64
===> Patching for electrix-0.2.0nb64
===> Creating toolchain wrappers for electrix-0.2.0nb64
===> Configuring for electrix-0.2.0nb64
=> Generating pkg-config file for builtin expat package.
cd /usr/pkgsrc/print/electrix/work/electrix-0.2.0 &&  /usr/pkg/bin/python3.7 ./waf configure --prefix=/usr/pkgsrc/print/electrix/work/.destdir/usr/pkg
Traceback (most recent call last):
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Node.py", line 280, in ant_iter
    raise StopIteration
StopIteration

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Scripting.py", line 95, in waf_entry_point
    run_commands()
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Scripting.py", line 143, in run_commands
    parse_options()
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Scripting.py", line 123, in parse_options
    Context.create_context('options').execute()
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Options.py", line 129, in execute
    super(OptionsContext,self).execute()
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Context.py", line 87, in execute
    self.recurse([os.path.dirname(g_module.root_path)])
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Context.py", line 127, in recurse
    user_function(self)
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/wscript", line 14, in options
    opt.load ('compiler_c glib2')
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Context.py", line 84, in load
    fun(self)
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Tools/compiler_c.py", line 31, in options
    opt.load_special_tools('c_*.py',ban=['c_dumbpreproc.py'])
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Context.py", line 248, in load_special_tools
    lst=self.root.find_node(waf_dir).find_node('waflib/extras').ant_glob(var)
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Node.py", line 328, in ant_glob
    ret=[x for x in self.ant_iter(accept=accept,pats=[to_pat(incl),to_pat(excl)],maxdepth=25,dir=dir,src=src,remove=kw.get('remove',True))]
  File "/usr/pkgsrc/print/electrix/work/electrix-0.2.0/.waf3-1.6.8-3e3391c5f23fbabad81e6d17c63a1b1e/waflib/Node.py", line 328, in <listcomp>
    ret=[x for x in self.ant_iter(accept=accept,pats=[to_pat(incl),to_pat(excl)],maxdepth=25,dir=dir,src=src,remove=kw.get('remove',True))]
RuntimeError: generator raised StopIteration
*** Error code 2

Stop.
bmake[1]: stopped in /usr/pkgsrc/print/electrix
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/print/electrix

>How-To-Repeat:
cd .../pkgsrc/print/electrix && bmake

>Fix: