[pkgsrc/trunk]: pkgsrc/mk/defaults mk: Disable default assignment of EXTRACT_...

[gdt <gdt%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/e22989e678e8
branches:  trunk
changeset: 412836:e22989e678e8
user:      gdt <gdt%pkgsrc.org@localhost>
date:      Thu Mar 12 16:57:23 2020 +0000

description:
mk: Disable default assignment of EXTRACT_USING

This is unnecessary, becuse extract/extract.mk has the same default
assignment.  It is harmful, because it prevents setting a value in
platform/Foo.mk.

Change the comment to say this is platform specific (which will be
true soon).

diffstat:

 mk/defaults/mk.conf |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (22 lines):

diff -r 386537353062 -r e22989e678e8 mk/defaults/mk.conf
--- a/mk/defaults/mk.conf       Thu Mar 12 16:55:31 2020 +0000
+++ b/mk/defaults/mk.conf       Thu Mar 12 16:57:23 2020 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: mk.conf,v 1.306 2020/01/12 23:38:42 joerg Exp $
+# $NetBSD: mk.conf,v 1.307 2020/03/12 16:57:23 gdt Exp $
 #
 
 # This file provides default values for variables that may be overridden
@@ -571,10 +571,10 @@
 # Possible: any combination of packages
 # Default: not set
 
-EXTRACT_USING?= nbtar
+#EXTRACT_USING?= nbtar
 # Use the specified tool to extract tar/ustar archives.
 # Possible: bsdtar, gtar, nbtar, pax
-# Default: nbtar
+# Default: platform specific
 
 #FAILOVER_FETCH=
 # Perform a checksum at "make fetch" time.  If the checksum doesn't