zfs.meta.platforms: restrict to upstream-supported $TARGET_CPUs

    homepage = "https://github.com/openzfs/zfs";

    changelog = "https://github.com/openzfs/zfs/releases/tag/zfs-${version}";

    license = lib.licenses.cddl;

    platforms = lib.platforms.linux;

    # The case-block for TARGET_CPU has branches for only five CPU families,

    # which prevents ZFS from building on any other platform.  Since the NixOS

    # `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/6a6bd493988c75331deab06e5352a9bed035a87d/config/always-arch.m4#L16

    platforms =

      with lib.systems.inspect.patterns;

      map (p: p // isLinux) [ isx86_32 isx86_64 isPower isAarch64 isSparc ];

    maintainers = with lib.maintainers; [ jcumming jonringer globin raitobezarius ];

    mainProgram = "zfs";

    # If your Linux kernel version is not yet supported by zfs, try zfsUnstable.