ZFS zedlets are run without required binaries

[sefidel]

Describe the bug

Zedlets seems to be run with a hard-coded path of /usr/bin:/bin:/usr/sbin:/sbin, and NixOS does not have any binaries there by default. Since tasks like sending a push notification requires external binaries like curl, they all fail.

Steps To Reproduce

Steps to reproduce the behavior:

1. set services.zfs.zed.settings.ZED_NTFY_TOPIC to a random value
2. *-notify.sh zedlets fail with exit=1
3. error seems to occur on a call to zed_check_cmd (both sed and curl is not found, code=2)

Expected behavior

I expect various notify tasks that requires external binaries like curl to succeed.

Screenshots

Additional context

• Required binaries are provided to the service, but zed is not using the provided PATH to run zedlets
• I was able to do a hacky workaround by supplying the path manually with the discouraged -P flag.

Metadata

• system: "x86_64-linux"
• host os: Linux 6.6.66, NixOS, 25.05 (Warbler), 25.05.20241219.d70bd19
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.25.3
• nixpkgs: /etc/nixpkgs/channels/nixpkgs

Notify maintainers

@amarshall

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