> sudo nixos-rebuild boot --fast
building the system configuration...
error: while evaluating the attribute ‘buildCommand’ of the derivation ‘nixos-system-l-nixos-17.09.3269.14f9ee66e63’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating the attribute ‘sources’ of the derivation ‘etc’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/etc/etc.nix:20:20, called from undefined position:
while evaluating the attribute ‘source’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `environment.etc.systemd/system.source':
while evaluating the attribute ‘mergedValue’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:5:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:32, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:19:
while evaluating ‘check’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:177:15, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:340:10:
while evaluating the attribute ‘buildCommand’ of the derivation ‘system-units’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating the attribute ‘text’ of the derivation ‘unit-dbus.service’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating the attribute ‘text’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `systemd.units.dbus.service.text':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:344:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:419:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:328:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:425:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:386:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:324:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:216:48:
while evaluating the attribute ‘config.text’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:326:7:
while evaluating ‘commonUnitText’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:310:20, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:326:14:
while evaluating ‘attrsToSection’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd-lib.nix:90:20, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:312:9:
while evaluating ‘mapAttrsToList’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:223:23, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd-lib.nix:91:33:
while evaluating the attribute ‘unitConfig’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `systemd.services.dbus.unitConfig':
while evaluating the attribute ‘mergedValue’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:5:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:32, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:19:
while evaluating ‘merge’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:210:20, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:342:8:
while evaluating ‘mapAttrs’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:198:17, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:211:9:
while evaluating ‘filterAttrs’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:115:23, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:211:35:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:116:18:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:116:29, called from undefined position:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:211:51, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:116:62:
while evaluating the attribute ‘X-Restart-Triggers’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:334:7:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:211:86, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:334:15:
while evaluating the attribute ‘optionalValue’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:346:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:419:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:328:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:425:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:386:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:324:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:216:55:
while evaluating the attribute ‘X-Restart-Triggers’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:227:13:
while evaluating the attribute ‘serviceDirectories’ of the derivation ‘dbus-1’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:189:14, called from undefined position:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:347:27:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:32, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:19:
while evaluating ‘check’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:177:15, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:340:10:
while evaluating the attribute ‘pkgs’ of the derivation ‘system-path’ at /nix/store/9jswllw4jq8dzygnma5w6m1cdzm3r4ix-nixos-17.09.3269.14f9ee66e63/nixos/pkgs/stdenv/generic/make-derivation.nix:98:11:
while evaluating the attribute ‘environment.systemPackages’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:44:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:75:45, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:199:52:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:312:9:
while evaluating the option `environment.systemPackages':
while evaluating the attribute ‘mergedValue’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:5:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:32, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:339:19:
while evaluating ‘merge’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:188:20, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:342:8:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:189:35, called from undefined position:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:94:29, called from undefined position:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:191:23, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:94:32:
while evaluating the attribute ‘optionalValue’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:346:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:419:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:328:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:425:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:102:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:386:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:324:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:195:40:
while evaluating anonymous function at /home/lfish/.emacs.d/emacs.nix:3:1, called from /etc/nixos/configuration.nix:113:6:
while evaluating the file ‘/home/lfish/nix-expressions/nixpkgs/default.nix’:
evaluation aborted with the following error message: ‘
This version of Nixpkgs requires Nix >= 2.0, please upgrade:

- If you are running NixOS, `nixos-rebuild' can be used to upgrade your system.

- Alternatively, with Nix > 2.0 `nix upgrade-nix' can be used to imperatively
  upgrade Nix. You may use `nix-env --version' to check which version you have.

- If you installed Nix using the install script (https://nixos.org/nix/install),
  it is safe to upgrade by running it again:

      curl https://nixos.org/nix/install | sh

For more information, please see the NixOS release notes at
https://nixos.org/nixos/manual or locally at
/home/lfish/nix-expressions/nixpkgs/nixos/doc/manual/release-notes.

If you need further help, see https://nixos.org/nixos/support.html
’