Preserve XDG_DATA_DIRS and add snapd desktop

Update flake.lock to bump nixpkgs to the new revision and narHash

config/bash.nix

@@ -38,7 +38,7 @@
       export EDITOR="code --wait"
       export STARSHIP_ENABLE_RIGHT_PROMPT="true"
       export STARSHIP_ENABLE_BASH_COMPLETION="true"
-      export XDG_DATA_DIRS="/usr/share:/var/lib/flatpak/exports/share:${config.home.homeDirectory}/.local/share/flatpak/exports/share"
+      export XDG_DATA_DIRS="/usr/share:/var/lib/flatpak/exports/share:${config.home.homeDirectory}/.local/share/flatpak/exports/share:$XDG_DATA_DIRS"
       export BUN_INSTALL="$HOME/.bun"
 
       # Source .profile (If exists)

flake.lock

@@ -41,11 +41,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1764316264,
-        "narHash": "sha256-82L+EJU+40+FIdeG4gmUlOF1jeSwlf2AwMarrpdHF6o=",
+        "lastModified": 1765363881,
+        "narHash": "sha256-3C3xWn8/2Zzr7sxVBmpc1H1QfxjNfta5IMFe3O9ZEPw=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9a7b80b6f82a71ea04270d7ba11b48855681c4b0",
+        "rev": "d2b1213bf5ec5e62d96b003ab4b5cbc42abfc0d0",
         "type": "github"
       },
       "original": {

workstation/snapd.nix

@@ -0,0 +1,17 @@
+{ config, lib, ... }:
+
+let
+  # Merge our session variable into any existing ones, if present.
+  existingSessionVars = config.home.sessionVariables or {};
+  sessionVars = existingSessionVars // {
+    # Prepend snap desktop dir so snap-provided .desktop files are discovered by desktop environments.
+    # We include `$XDG_DATA_DIRS` to preserve any previously-set value at runtime.
+    XDG_DATA_DIRS = "/var/lib/snapd/desktop:$XDG_DATA_DIRS";
+  };
+in
+{
+  config = {
+    # Use mkForce to ensure this module's value takes precedence when modules are merged.
+    home.sessionVariables = lib.mkForce sessionVars;
+  };
+}