=> Bootstrap dependency digest>=20211023: found digest-20220214
ERROR: This package is only available for these platforms: DragonFly-*-x86_64    FreeBSD-*-i386        FreeBSD-*-x86_64      SunOS-5.1[1-9]*-i386  SunOS-5.1[1-9]*-x86_64  NetBSD-*-i386    NetBSD-*-x86_64.
ERROR: [can-be-built-here.mk] This package has PKG_SKIP_REASON set:
ERROR: [bsd.pkg.mk] gcc15-gnat-15.2.0nb2 is not available for NetBSD-11.0-riscv64
*** Error code 1

Stop.
make: stopped making "checksum" in /usr/pkgsrc/lang/gcc15-gnat