===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Building for py313-backports-1.0nb2
cd /pbulk/work/devel/py-backports/work/py313-backports-1.0 && /usr/pkg/bin/python3.13 /usr/pkg/lib/python3.13/compileall.py -q . && /usr/pkg/bin/python3.13 -O /usr/pkg/lib/python3.13/compileall.py -q .
sh: /usr/pkg/bin/python3.13: not found
*** Error code 127

Stop.
make[1]: stopped in /usr/pkgsrc/devel/py-backports
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/devel/py-backports