=> Bootstrap dependency digest>=20010302: found digest-20190127
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
=> Checksum SHA1 OK for dwdiff-2.1.2.tar.bz2
=> Checksum RMD160 OK for dwdiff-2.1.2.tar.bz2
=> Checksum SHA512 OK for dwdiff-2.1.2.tar.bz2
===> Installing dependencies for dwdiff-2.1.2
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency icu>=67.1: found icu-67.1
===> Skipping vulnerability checks.
WARNING: No /var/db/pkg/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /var/db/pkg fetch-pkg-vulnerabilities'.
===> Overriding tools for dwdiff-2.1.2
===> Extracting for dwdiff-2.1.2
===> Patching for dwdiff-2.1.2
=> Applying pkgsrc patches for dwdiff-2.1.2
=> Verifying /data/pkgsrc/textproc/dwdiff/patches/patch-config.pkg
=> Applying pkgsrc patch /data/pkgsrc/textproc/dwdiff/patches/patch-config.pkg
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-config.pkg,v 1.1 2020/06/05 12:43:53 ryoon Exp $
|
|* Fix libintl detection during configure.
|
|--- config.pkg.orig	2018-12-10 18:25:15.000000000 +0000
|+++ config.pkg
--------------------------
Patching file config.pkg using Plan A...
Hunk #1 succeeded at 15.
done
===> Creating toolchain wrappers for dwdiff-2.1.2
===> Configuring for dwdiff-2.1.2
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
=> Fixing locale directory references.
INFO: [subst.mk:pkglocaledir] Nothing changed in "Makefile.in".
=> Checking for portability problems in extracted files
WARNING: ignoring unknown parameter: --build=x86_64--netbsd
WARNING: ignoring unknown parameter: --host=x86_64--netbsd
WARNING: ignoring unknown parameter: --mandir=/usr/pkg/man
WARNING: ignoring unknown parameter: --enable-option-checking=yes
Checking for working make (make)... yes
Checking for working C compiler (clang)... yes
Checking for gettext and related functions... yes
Checking for gettext in standard library... no
Checking for gettext in -lintl... yes
Checking for msgfmt... yes
Checking for required functions... yes
Checking for required functions for dwfilter... yes
Checking for strdup... yes
Checking for setlocale... yes
Checking for ICU pkg-config... ./configure: pkg-config: not found
no
!! Could not compile with Unicode support. Try configuring with --without-unicode.
*** Error code 1

Stop.
make[1]: stopped in /data/pkgsrc/textproc/dwdiff
*** Error code 1

Stop.
make: stopped in /data/pkgsrc/textproc/dwdiff