=> 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 powermanga-0.93.1.tgz
=> Checksum RMD160 OK for powermanga-0.93.1.tgz
=> Checksum SHA512 OK for powermanga-0.93.1.tgz
===> Installing dependencies for powermanga-0.93.1
=> Tool dependency automake>=1.9: found automake-1.16.2
=> Tool dependency autoconf>=2.58: found autoconf-2.69nb9
=> Tool dependency checkperms>=1.1: found checkperms-1.12
=> Build dependency xorgproto>=2016.1: found xorgproto-2020.1
=> Build dependency xcb-proto>=1.4: found xcb-proto-1.14
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency SDL_mixer>=1.2.12nb6: found SDL_mixer-1.2.12nb6
=> Full dependency SDL>=1.2.15nb17: found SDL-1.2.15nb31
=> Full dependency png>=1.6.0nb1: found png-1.6.37
===> Overriding tools for powermanga-0.93.1
===> Extracting for powermanga-0.93.1
===> Patching for powermanga-0.93.1
=> Applying pkgsrc patches for powermanga-0.93.1
=> Verifying /data/pkgsrc/games/powermanga/patches/patch-src_Makefile.am
=> Applying pkgsrc patch /data/pkgsrc/games/powermanga/patches/patch-src_Makefile.am
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-src_Makefile.am,v 1.1 2020/05/19 11:37:56 nia Exp $
|
|- Install binaries to the usual location.
|- Fix setup for score directory.
|
|--- src/Makefile.am.orig	2014-10-18 20:06:20.000000000 +0000
|+++ src/Makefile.am
--------------------------
Patching file src/Makefile.am using Plan A...
Hunk #1 succeeded at 1.
Hunk #2 succeeded at 11.
done
===> Creating toolchain wrappers for powermanga-0.93.1
===> Configuring for powermanga-0.93.1
=> Fixing support file installation paths.
WARNING: [subst.mk:path] Nothing changed in "Makefile.am".
ERROR: [subst.mk:path] The filename pattern "Makefile.am" has no effect.
*** Error code 1

Stop.
make[1]: stopped in /data/pkgsrc/games/powermanga
*** Error code 1

Stop.
make: stopped in /data/pkgsrc/games/powermanga