zfs: update supported platforms

        # `boot.zfs.enabled` property is `readOnly`, excluding platforms where ZFS

        # does not build is the only way to produce a NixOS installer on such

        # platforms.

        # https://github.com/openzfs/zfs/blob/6723d1110f6daf93be93db74d5ea9f6b64c9bce5/config/always-arch.m4#L12

        # https://github.com/openzfs/zfs/blob/077269bfeddf2d35eb20f98289ac9d017b4a32ff/lib/libspl/include/sys/isa_defs.h#L267-L270

        platforms =

          with lib.systems.inspect.patterns;

          map (p: p // isLinux) (

            [

              isx86_32

              isx86_64

          map (p: p // isLinux) ([

            isx86

            isAarch

            isPower

              isAarch64

            isS390

            isSparc

            ]

            ++ isArmv7

          );

            isMips

            isRiscV64

            isLoongArch64

          ]);

        inherit maintainers;

        mainProgram = "zfs";