diff --git a/home/prompt.nix b/home/prompt.nix
index 87aec7c..6654749 100644
--- a/home/prompt.nix
+++ b/home/prompt.nix
@@ -62,4 +62,14 @@ in {
 
   # We'd like to have the iTerm2 shell integration utilities in ~/.iterm2.
   home.file.".iterm2".source = "${iterm2_shell_integration}/utilities";
+
+  # We'd also like to have Nix sourced by default within .zshenv, as
+  # non-interactive shells don't always source ~/.zprofile or similar.
+  programs.zsh.envExtra = ''
+    # Nix
+    if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
+      . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
+    fi
+    # End Nix
+  '';
 }
\ No newline at end of file