advi: use ghostscriptX instead of gs discovered at build time

pkgs/tools/typesetting/tex/advi/default.nix

@@ -45,6 +45,8 @@ ocamlPackages.buildDunePackage rec {
     substituteInPlace ./Makefile \
       --replace "\$(DUNE) install \$(DUNEROOT) --display=short" \
       "\$(DUNE) install \$(DUNEROOT) --prefix $out --docdir $out/share/doc --mandir $out/share/man"
+    substituteInPlace ./src/discover.sh \
+      --replace 'gs_path=$(which gs)' 'gs_path=${ghostscriptX}/bin/gs'
   '';
 
   duneVersion = "3";
@@ -52,10 +54,9 @@ ocamlPackages.buildDunePackage rec {
   nativeBuildInputs = [ fake-opam kpsexpand makeWrapper texlive.combined.scheme-medium which ];
   buildInputs = with ocamlPackages; [ camlimages ghostscriptX graphics ];
 
-  # TODO: ghostscript linked from texlive.combine will override ghostscriptX and break advi
+  # install additional files (such as man pages)
   preInstall = ''
     make install
-    wrapProgram "$out/bin/advi" --prefix PATH : "${lib.makeBinPath [ ghostscriptX ]}"
   '';
 
   # TODO: redirect /share/advi/tex/latex to tex output compatible with texlive.combine