Cinnamon application list doesn't update until cinnamon is restarted

I’m running into an issue where, whenever I install or remove packages (through nixos-rebuild switch or nix-env -i) my desktop environment application list doesn’t update with the new application until I log out and log back in. Is there any way to fix that? I’ve tested this with cinnamon and plasma and run into the same issue both times, so I’m pretty sure this is an issue with how NixOS is exposing .desktop files to the DE, not a problem with the DE itself. Restarting Cinnamon with alt+f2, r works to update the application list, but I don’t consider doing that after every update to be a permanent solution.

I’ve included my configuration.nix file below. Forgive the messiness - I’m fairly new to nix :slight_smile: !

# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

  imports =
    [ # Include the results of the hardware scan.

  # Use the systemd-boot EFI boot loader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "oss-laptop"; # Define your hostname.
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "America/New_York";

  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
  # Per-interface useDHCP will be mandatory in the future, so this generated config
  # replicates the default behaviour.
  networking.useDHCP = false;
  networking.interfaces.wlp57s0.useDHCP = true;

  nixpkgs.config.allowUnfree = true;

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = ",localhost,internal.domain";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";
  console = {
    font = "Lat2-Terminus16";
    keyMap = "us";

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Configure keymap in X11
  services.xserver.layout = "us";

  services.xserver.desktopManager.cinnamon.enable = true;
  programs.gnome-terminal.enable = false;

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound.
  sound.enable = true;
  hardware.pulseaudio.enable = true;

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.osspial = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  # services.openssh.enable = true;

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on
  system.stateVersion = "21.05"; # Did you read the comment?
  system.autoUpgrade.enable = true;

See Gnome Activities icons should appear on app install · Issue #12757 · NixOS/nixpkgs · GitHub.

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