Add command-not-found handler

flake.nix

@@ -30,6 +30,10 @@
               wrapProgram $out/bin/comma \
                 --prefix PATH : ${lib.makeBinPath (with pkgs; [ nix fzy nix-index-unwrapped ])}
               ln -s $out/bin/comma $out/bin/,
+
+              mkdir -p $out/etc/profile.d
+              cp $src/src/command-not-found.sh $out/etc/profile.d
+              patchShebangs $out/etc/profile.d/command-not-found.sh
             '';
           };
           checkInputs = [ pkgs.rustPackages.clippy ];

src/command-not-found.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# bash command not found handler
+command_not_found_handle() {
+    ../../bin/comma "$@"
+    return $?
+}
+
+# zsh compatibility
+command_not_found_handler () {
+    command_not_found_handle "$@"
+    return $?
+}