Baffling error when including emacsWithPackages in my config.

gistfile1.txt

tower# nixos-rebuild switch --show-trace
building Nix...
building the system configuration...
error: while evaluating the attribute ‘config.system.build.toplevel’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/activation/top-level.nix:246:5:
while evaluating ‘fold’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:29:19, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/activation/top-level.nix:127:12:
while evaluating ‘fold'’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:32:15, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:36:8:
while evaluating ‘showWarnings’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/activation/top-level.nix:93:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/activation/top-level.nix:100:16:
while evaluating ‘fold’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:29:19, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/activation/top-level.nix:93:23:
while evaluating ‘fold'’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:32:15, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:36:8:
while evaluating the attribute ‘warnings’ 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:74:45, 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:291:9:
while evaluating the option `warnings':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:395:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:307:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:401:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:365:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:303:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:203:48:
while evaluating the attribute ‘config.warnings’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:637:5:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:224:10, called from undefined position:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:637:51, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/attrsets.nix:224:16:
while evaluating ‘optional’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:175:20, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/system/boot/systemd.nix:638:7:
while evaluating the attribute ‘serviceConfig.Type’ 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:74:45, 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:291:9:
while evaluating the option `systemd.services.display-manager.serviceConfig':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:395:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:307:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:401:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:365:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:303:62:
while evaluating the attribute ‘condition’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:441:14:
while evaluating the attribute ‘condition’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:441:14:
while evaluating the attribute ‘script’ 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:74:45, 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:291:9:
while evaluating the option `systemd.services.display-manager.script':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:395:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:307:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:401:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:365:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:303:62:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:203:48:
while evaluating the attribute ‘config.script’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/xserver.nix:527:9:
while evaluating the attribute ‘displayManager.job.execCmd’ 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:74:45, 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:291:9:
while evaluating the option `services.xserver.displayManager.job.execCmd':
while evaluating the attribute ‘isDefined’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:323:5:
while evaluating ‘filterOverrides’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:395:21, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:307:18:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:401:8:
while evaluating ‘concatMap’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/lists.nix:79:18, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:17:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:302:28, called from undefined position:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:365:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:303:62:
while evaluating ‘dischargeProperties’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:365:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:370:9:
while evaluating the attribute ‘content’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:441:14:
while evaluating the attribute ‘execCmd’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/kdm.nix:137:9:
while evaluating the attribute ‘config’ of the derivation ‘kdmrc’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/kdm.nix:58:5:
while evaluating the attribute ‘buildCommand’ of the derivation ‘desktops’ at /nix/store/afrgg4w651wyqhihc39adqyf2h1pqkfj-nixos-16.09.1149.e360c72/nixos/pkgs/build-support/trivial-builders.nix:10:14:
while evaluating ‘concatMapStrings’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/strings.nix:27:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/default.nix:152:9:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/default.nix:152:27, called from undefined position:
while evaluating the attribute ‘text’ of the derivation ‘xsession’ at /nix/store/afrgg4w651wyqhihc39adqyf2h1pqkfj-nixos-16.09.1149.e360c72/nixos/pkgs/build-support/trivial-builders.nix:10:14:
while evaluating ‘concatMapStrings’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/strings.nix:27:25, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/default.nix:129:11:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/display-managers/default.nix:129:29, called from undefined position:
while evaluating the attribute ‘start’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/desktop-managers/default.nix:45:13:
while evaluating the attribute ‘start’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/nixos/modules/services/x11/desktop-managers/gnome3.nix:133:9:
while evaluating the attribute ‘pkgs’ of the derivation ‘system-path’ at /nix/store/afrgg4w651wyqhihc39adqyf2h1pqkfj-nixos-16.09.1149.e360c72/nixos/pkgs/build-support/trivial-builders.nix:10:14:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:121:14, called from undefined position:
while evaluating the attribute ‘value’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:326:27:
while evaluating anonymous function at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:318:32, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:318:19:
while evaluating ‘check’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:97:15, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/modules.nix:319:10:
while evaluating ‘isStorePath’ at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/strings.nix:442:17, called from /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/types.nix:97:36:
cannot coerce a function to a string, at /nix/var/nix/profiles/per-user/root/channels/nixos/nixpkgs/lib/strings.nix:442:44