ptags: Add `ctags` to the PATH

Signed-off-by: Pamplemousse <xav.maso@gmail.com>

pkgs/development/tools/misc/ptags/default.nix

@@ -1,8 +1,9 @@
 { fetchFromGitHub
 , cargo
+, ctags
 , lib
+, makeWrapper
 , rustPlatform
-
 }:
 
 rustPlatform.buildRustPackage rec {
@@ -18,6 +19,14 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "1pz5hvn1iq26i8c2cmqavhnri8h0sn40khrxvcdkj9q47nsj5wcx";
 
+  nativeBuildInputs = [ makeWrapper ];
+
+  postInstall = ''
+    # `ctags` must be accessible in `PATH` for `ptags` to work.
+    wrapProgram "$out/bin/ptags" \
+      --prefix PATH : "${lib.makeBinPath [ ctags ]}"
+  '';
+
   # Sanity check.
   checkPhase = ''
     $releaseDir/ptags --help > /dev/null