[NixOS] Fix rofi-systemd term

dotfiles/xprofile

@@ -1,11 +0,0 @@
-# -*- mode: sh; -*-
-
-# If there are issues with path, check /etc/profile for hard overrides of PATH.
-. "$HOME/.lib/login.sh"
-# XXX: prevents https://github.com/xmonad/xmonad/issues/86 from affecting startup
-rm -f ~/.xmonad
-
-load_xkb_map.sh
-
-run_if_exists systemctl --user import-environment XDG_DATA_DIRS
-run_if_exists systemctl --user start wm.target

dotfiles/xsession

@@ -1 +0,0 @@
-ROFI_SYSTEMD_TERM=alacritty

nixos/home-manager.nix

@@ -1,11 +1,13 @@
 { pkgs, ... }: {
-  home.sessionVariablesExtra = ''
-    ROFI_SYSTEMD_TERM="alacritty"
-  '';
-
   xsession = {
+    enable = true;
     preferStatusNotifierItems = true;
+    windowManager.command = "${pkgs.haskellPackages.imalison-xmonad}/bin/imalison-xmonad";
+    profileExtra = ''
+      export ROFI_SYSTEMD_TERM="alacritty -e"
+    '';
   };
+
   home.emptyActivationPath = false;
   programs.home-manager.enable = true;