Change:
The ZFS Event Daemon, or zed, doesn't seem to be working. My service is inactive with the error message: This is what the service looks like: The file it references at the top is: System: (NixOS: 17.03.1091. (Gorilla)) Nix version: (nix-env (Nix) 1.11.8) Nixpkgs version: ("17.03.1091.")
It does not contain an line.
Usually the systemd service from upstream is overridden, but it was renamed upstream: and is now called .
Maybe I'm doing something incorrectly but it's not working properly for me. On other systems I have always simply set: And it is sent me messages upon starting scrubs and other events. On Nix I set: But it doesn't send me messages upon events such as a scrub. I tried enabling it to start on boot But it didn't seem to start. I had to explicitly start the service. Then after starting a scrub I don't get any messages. I have a MTA set up and can send email.
is probably not in path of the zed service. might be a better choice.
Regarding starting at boot. It looks like is not created by nixos.
I set it to /run/wrappers/bin/sendmail, still not getting emails.

Discussion:
<ins> {stdenv, fetchurl, yacc, flex, pkgconfig, glib, xz}: stdenv.mkDerivation rec { version = "0.15.2"; name = "vala-${version}"; src = fetchurl { url = "mirror://gnome/sources/vala/0.15/${name}.tar.xz"; sha256 = "0g71zq6dpqrw2f40wfzdf18fdw41ymr17laqniy2kr622hkxdi8w"; }; buildNativeInputs = [ yacc flex pkgconfig xz ]; buildInputs = [ glib ]; meta = { description = "Compiler for the GObject type system"; homepage = "http://live.gnome.org/Vala"; license = "free-copyleft"; platforms = stdenv.lib.platforms.all; maintainers = [ stdenv.lib.maintainers.antono ]; }; } </ins>

<ins> {stdenv, fetchurl, yacc, flex, pkgconfig, glib, xz}: stdenv.mkDerivation rec { version = "0.16.1"; name = "vala-${version}"; src = fetchurl { url = "mirror://gnome/sources/vala/0.16/${name}.tar.xz"; sha256 = "1n708n9ixyy9qrzyv1wf4ybvcclx43ib9ki028wwpvkz6kv8zqlb"; }; buildNativeInputs = [ yacc flex pkgconfig xz ]; buildInputs = [ glib ]; meta = { description = "Compiler for the GObject type system"; homepage = "http://live.gnome.org/Vala"; license = "free-copyleft"; platforms = stdenv.lib.platforms.all; maintainers = [ stdenv.lib.maintainers.antono ]; }; } </ins>

{stdenv, fetchurl, yacc, flex, pkgconfig, glib, xz}: stdenv.mkDerivation rec { <del> name = "vala-0.14.2"; </del> <ins> version = "0.17.2"; name = "vala-${version}"; </ins> src = fetchurl { <del> url = mirror://gnome/sources/vala/0.14/vala-0.14.2.tar.xz; sha256 = "1l5kllw9vpwv24lzv9fp64l3sad46wpxgvsgryrwlrjg91w6jzl0"; </del> <ins> url = "mirror://gnome/sources/vala/0.17/${name}.tar.xz"; sha256 = "09i2s0dwmrk147ind2dx7nq845g12fp6fsjqrphhrr0dbi0zzgh3"; </ins> }; buildNativeInputs = [ yacc flex pkgconfig xz ];

meta = { description = "Compiler for the GObject type system"; homepage = "http://live.gnome.org/Vala"; <ins> license = "free-copyleft"; platforms = stdenv.lib.platforms.all; maintainers = [ stdenv.lib.maintainers.antono ]; </ins> }; }

urweb = callPackage ../development/compilers/urweb { }; <del> vala = callPackage ../development/compilers/vala { }; </del> <ins> vala = vala17; vala15 = callPackage ../development/compilers/vala/15.2.nix { }; vala16 = callPackage ../development/compilers/vala/16.1.nix { }; vala17 = callPackage ../development/compilers/vala/default.nix { }; </ins> visualcpp = callPackage ../development/compilers/visual-c++ { };