systemd: move systemd-tmpfiles-setup-dev.service back to early boot

arianvp · ajs124 · commit d4e4d27dff47 · 2021-12-06T14:40:07.000Z
It was originally moved because of nixops autoLuks feature which has been unsupported for a while. See: * #62211 * NixOS/nixops#1156 (comment) systemd-tmpfiles-setup-dev.service needs to run very early (even before udev runs) because udev rules assume static device nodes already exist even before udev is started. If these static device nodes do not exist; systemd might have trouble mounting filesystems that require static device nodes (like loopfs and btrfs).
diff --git a/pkgs/os-specific/linux/systemd/default.nix b/pkgs/os-specific/linux/systemd/default.nix
@@ -575,12 +575,6 @@ stdenv.mkDerivation {
   '';
 
   postInstall = ''
-    # sysinit.target: Don't depend on
-    # systemd-tmpfiles-setup.service. This interferes with NixOps's
-    # send-keys feature (since sshd.service depends indirectly on
-    # sysinit.target).
-    mv $out/lib/systemd/system/sysinit.target.wants/systemd-tmpfiles-setup-dev.service $out/lib/systemd/system/multi-user.target.wants/
-
     mkdir -p $out/example/systemd
     mv $out/lib/{modules-load.d,binfmt.d,sysctl.d,tmpfiles.d} $out/example
     mv $out/lib/systemd/{system,user} $out/example/systemd
