broot: disable nag about installing shell functions

pkgs/tools/misc/broot/default.nix

@@ -1,4 +1,12 @@
-{ stdenv, rustPlatform, fetchFromGitHub, coreutils, libiconv, Security, installShellFiles }:
+{ stdenv
+, rustPlatform
+, fetchFromGitHub
+, installShellFiles
+, makeWrapper
+, coreutils
+, libiconv
+, Security
+}:
 
 rustPlatform.buildRustPackage rec {
   pname = "broot";
@@ -13,7 +21,7 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "18b4lh5x25mbhpffva8ygzm5ad00svm1c3r83vfw0l2f61m7vyjh";
 
-  nativeBuildInputs = [ installShellFiles ];
+  nativeBuildInputs = [ makeWrapper installShellFiles ];
 
   buildInputs = stdenv.lib.optionals stdenv.isDarwin [ libiconv Security ];
 
@@ -27,6 +35,11 @@ rustPlatform.buildRustPackage rec {
   '';
 
   postInstall = ''
+    # Do not nag users about installing shell integration, since
+    # it is impure.
+    wrapProgram $out/bin/broot \
+      --set BR_INSTALL no
+
     # install shell completion files
     OUT_DIR=$releaseDir/build/broot-*/out