mitscheme: unpin texinfo

pkgs/development/compilers/mit-scheme/default.nix

@@ -1,5 +1,6 @@
 {
   fetchurl,
+  fetchDebianPatch,
   lib,
   stdenv,
   makeWrapper,
@@ -43,6 +44,16 @@ stdenv.mkDerivation {
         sha256 = "035f92vni0vqmgj9hq2i7vwasz7crx52wll4823vhfkm1qdv5ywc";
       };
 
+  patches = [
+    (fetchDebianPatch {
+      pname = "mit-scheme";
+      version = "12.1";
+      debianRevision = "4";
+      patch = "0006-texi2any-_html-fix.patch";
+      hash = "sha256-tTAK/xRGubQeiqe1Nbo+m3CYmscXxQ8HAlIl4kSZxk8=";
+    })
+  ];
+
   buildInputs = [ ncurses ] ++ lib.optionals enableX11 [ libX11 ];
 
   configurePhase = ''

pkgs/top-level/all-packages.nix

@@ -5496,9 +5496,7 @@ with pkgs;
     jdk_headless = openjdk8_headless; # TODO: remove override https://github.com/NixOS/nixpkgs/pull/89731
   };
 
-  mitscheme = callPackage ../development/compilers/mit-scheme {
-    texinfo = texinfo6;
-  };
+  mitscheme = callPackage ../development/compilers/mit-scheme { };
 
   mitschemeX11 = mitscheme.override {
     enableX11 = true;