=> Bootstrap dependency digest>=20010302: found digest-20121220
=> Bootstrap dependency fetch-[0-9]*: found fetch-1.8nb1
=> Checksum SHA1 OK for sch-20010224.tar.gz
=> Checksum RMD160 OK for sch-20010224.tar.gz
===> Installing dependencies for sch-20010224
=> Tool dependency nbpatch-[0-9]*: found nbpatch-20100124
=> Tool dependency checkperms>=1.1: found checkperms-1.11
===> Overriding tools for sch-20010224
===> Extracting for sch-20010224
===> Patching for sch-20010224
=> Applying pkgsrc patches for sch-20010224
=> Verifying /usr/pkgsrc/misc/sch/patches/patch-aa
=> Applying pkgsrc patch /usr/pkgsrc/misc/sch/patches/patch-aa
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-aa,v 1.1 2004/05/23 23:28:08 kristerw Exp $
|--- ../opts.c.orig	2004-05-24 01:23:56.000000000 +0200
|+++ ../opts.c	2004-05-24 01:24:52.000000000 +0200
--------------------------
Patching file ../opts.c using Plan A...
Hunk #1 succeeded at 82.
done
===> Creating toolchain wrappers for sch-20010224
===> Configuring for sch-20010224
=> 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
=> Checking for portability problems in extracted files
creating cache ./config.cache
checking host system type... x86_64-unknown-linux-gnu
checking for a BSD compatible install... /usr/bin/install -c -o pbulk -g pbulk
checking for cal... /usr/bin/cal
checking for Mail... no
checking for mail... no
checking if sendbug is possible... disabled
checking if --enable-debug option specified... no
checking if --enable-pedant option specified... no
checking if --enable-cdebug option specified... no
checking if --enable-timezone option specified... yes
checking for offtime... no
Fatal: mandatory date function not found
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/misc/sch
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/misc/sch