diff --git a/pkgs/by-name/k2/k2pdfopt/package.nix b/pkgs/by-name/k2/k2pdfopt/package.nix
index 32a0e31a315b..08771f9b1942 100644
--- a/pkgs/by-name/k2/k2pdfopt/package.nix
+++ b/pkgs/by-name/k2/k2pdfopt/package.nix
@@ -1,22 +1,31 @@
-{ lib
-, stdenv
-, runCommand
-, fetchzip
-, fetchurl
-, fetchFromGitHub
-, cmake
-, jbig2dec
-, libjpeg_turbo
-, libpng
-, makeWrapper
-, pkg-config
-, zlib
-, enableGSL ? true, gsl
-, enableGhostScript ? true, ghostscript
-, enableMuPDF ? true, mupdf
-, enableDJVU ? true, djvulibre
-, enableGOCR ? false, gocr # Disabled by default due to crashes
-, enableTesseract ? true, leptonica, tesseract
+{
+  lib,
+  stdenv,
+  runCommand,
+  fetchzip,
+  fetchurl,
+  fetchFromGitHub,
+  cmake,
+  jbig2dec,
+  libjpeg_turbo,
+  libpng,
+  makeWrapper,
+  pkg-config,
+  zlib,
+  enableGSL ? true,
+  gsl,
+  enableGhostScript ? true,
+  ghostscript,
+  enableMuPDF ? true,
+  mupdf,
+  enableDJVU ? true,
+  djvulibre,
+  enableGOCR ? false,
+  gocr, # Disabled by default due to crashes
+  enableTesseract ? true,
+  leptonica,
+  tesseract5,
+  opencl-headers,
 }:
 
 # k2pdfopt is a pain to package. It requires modified versions of mupdf,
@@ -45,20 +54,26 @@
 
 let
   # Create a patch against src based on changes applied in patchCommands
-  mkPatch = { name, src, patchCommands }: runCommand "${name}-k2pdfopt.patch" { inherit src; } ''
-    source $stdenv/setup
-    unpackPhase
+  mkPatch =
+    {
+      name,
+      src,
+      patchCommands,
+    }:
+    runCommand "${name}-k2pdfopt.patch" { inherit src; } ''
+      source $stdenv/setup
+      unpackPhase
 
-    orig=$sourceRoot
-    new=$sourceRoot-modded
-    cp -r $orig/. $new/
+      orig=$sourceRoot
+      new=$sourceRoot-modded
+      cp -r $orig/. $new/
 
-    pushd $new >/dev/null
-    ${patchCommands}
-    popd >/dev/null
+      pushd $new >/dev/null
+      ${patchCommands}
+      popd >/dev/null
 
-    diff -Naur $orig $new > $out || true
-  '';
+      diff -Naur $orig $new > $out || true
+    '';
 
   pname = "k2pdfopt";
   version = "2.55";
@@ -66,7 +81,8 @@ let
     url = "http://www.willus.com/${pname}/src/${pname}_v${version}_src.zip";
     hash = "sha256-orQNDXQkkcCtlA8wndss6SiJk4+ImiFCG8XRLEg963k=";
   };
-in stdenv.mkDerivation rec {
+in
+stdenv.mkDerivation rec {
   inherit pname version;
   src = k2pdfopt_src;
 
@@ -79,88 +95,124 @@ in stdenv.mkDerivation rec {
       --replace "<djvu.h>" "<libdjvu/ddjvuapi.h>"
   '';
 
-  nativeBuildInputs = [ cmake pkg-config makeWrapper ];
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+    makeWrapper
+  ];
 
   buildInputs =
-  let
-    # We use specific versions of these sources below to match the versions
-    # used in the k2pdfopt source. Note that this does _not_ need to match the
-    # version used elsewhere in nixpkgs, since it is only used to create the
-    # patch that can then be applied to the version in nixpkgs.
-    mupdf_patch = mkPatch {
-      name = "mupdf";
-      src = fetchurl {
-        url = "https://mupdf.com/downloads/archive/mupdf-1.23.7-source.tar.gz";
-        hash = "sha256-NaVJM/QA6JZnoImkJfHGXNadRiOU/tnAZ558Uu+6pWg=";
-      };
-      patchCommands = ''
-        cp ${k2pdfopt_src}/mupdf_mod/{filter-basic,font,stext-device,string}.c ./source/fitz/
-        cp ${k2pdfopt_src}/mupdf_mod/pdf-* ./source/pdf/
-      '';
-    };
-    mupdf_modded = mupdf.overrideAttrs ({ patches ? [], ... }: {
-      patches = patches ++ [ mupdf_patch ];
-      # This function is missing in font.c, see font-win32.c
-      postPatch = ''
-        echo "void pdf_install_load_system_font_funcs(fz_context *ctx) {}" >> source/fitz/font.c
-      '';
-    });
-
-    leptonica_patch = mkPatch {
-      name = "leptonica";
-      src = fetchurl {
-        url = "http://www.leptonica.org/source/leptonica-1.83.0.tar.gz";
-        hash = "sha256-IGWR3VjPhO84CDba0TO1jJ0a+SSR9amCXDRqFiBEvP4=";
-      };
-      patchCommands = "cp -r ${k2pdfopt_src}/leptonica_mod/. ./src/";
-    };
-    leptonica_modded = leptonica.overrideAttrs ({ patches ? [], ... }: {
-      patches = patches ++ [ leptonica_patch ];
-    });
-
-    tesseract_patch = mkPatch {
-      name = "tesseract";
-      src = fetchFromGitHub {
-        owner = "tesseract-ocr";
-        repo = "tesseract";
-        rev = "5.3.3";
-        hash = "sha256-/aGzwm2+0y8fheOnRi/OJXZy3o0xjY1cCq+B3GTzfos=";
-      };
-      patchCommands = ''
-        cp ${k2pdfopt_src}/tesseract_mod/tesseract.* include/tesseract/
-        cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h include/tesseract/
-        cp ${k2pdfopt_src}/tesseract_mod/{baseapi,config_auto,tesscapi,tesseract}.* src/api/
-        cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h src/api/
-        cp ${k2pdfopt_src}/tesseract_mod/{tesscapi,tessedit,tesseract}.* src/ccmain/
-        cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h src/ccmain/
-        cp ${k2pdfopt_src}/tesseract_mod/dotproduct{avx,fma,sse}.* src/arch/
-        cp ${k2pdfopt_src}/tesseract_mod/{intsimdmatrixsse,simddetect}.* src/arch/
-        cp ${k2pdfopt_src}/tesseract_mod/{errcode,genericvector,mainblk,params,serialis,tessdatamanager,tess_version,tprintf,unicharset}.* src/ccutil/
-        cp ${k2pdfopt_src}/tesseract_mod/{input,lstmrecognizer}.* src/lstm/
-        cp ${k2pdfopt_src}/tesseract_mod/openclwrapper.* src/opencl/
-      '';
-    };
-    tesseract_modded = tesseract.override {
-      tesseractBase = tesseract.tesseractBase.overrideAttrs ({ patches ? [], ... }: {
-        patches = patches ++ [ tesseract_patch ];
-        # Additional compilation fixes
-        postPatch = ''
-          echo libtesseract_la_SOURCES += src/api/tesscapi.cpp >> Makefile.am
-          substituteInPlace src/api/tesseract.h \
-            --replace "#include <leptonica.h>" "//#include <leptonica.h>"
-          substituteInPlace include/tesseract/tesseract.h \
-            --replace "#include <leptonica.h>" "//#include <leptonica.h>"
+    let
+      # We use specific versions of these sources below to match the versions
+      # used in the k2pdfopt source. Note that this does _not_ need to match the
+      # version used elsewhere in nixpkgs, since it is only used to create the
+      # patch that can then be applied to the version in nixpkgs.
+      mupdf_patch = mkPatch {
+        name = "mupdf";
+        src = fetchurl {
+          url = "https://mupdf.com/downloads/archive/mupdf-1.23.7-source.tar.gz";
+          hash = "sha256-NaVJM/QA6JZnoImkJfHGXNadRiOU/tnAZ558Uu+6pWg=";
+        };
+        patchCommands = ''
+          cp ${k2pdfopt_src}/mupdf_mod/{filter-basic,font,stext-device,string}.c ./source/fitz/
+          cp ${k2pdfopt_src}/mupdf_mod/pdf-* ./source/pdf/
         '';
-      });
-    };
-  in
-    [ jbig2dec libjpeg_turbo libpng zlib ] ++
-    lib.optional enableGSL gsl ++
-    lib.optional enableGhostScript ghostscript ++
-    lib.optional enableMuPDF mupdf_modded ++
-    lib.optional enableDJVU djvulibre ++
-    lib.optional enableGOCR gocr ++
-    lib.optionals enableTesseract [ leptonica_modded tesseract_modded ];
+      };
+      mupdf_modded = mupdf.overrideAttrs (
+        {
+          patches ? [ ],
+          ...
+        }:
+        {
+          patches = patches ++ [ mupdf_patch ];
+          # This function is missing in font.c, see font-win32.c
+          postPatch = ''
+            echo "void pdf_install_load_system_font_funcs(fz_context *ctx) {}" >> source/fitz/font.c
+          '';
+        }
+      );
+
+      leptonica_patch = mkPatch {
+        name = "leptonica";
+        src = fetchurl {
+          url = "http://www.leptonica.org/source/leptonica-1.83.0.tar.gz";
+          hash = "sha256-IGWR3VjPhO84CDba0TO1jJ0a+SSR9amCXDRqFiBEvP4=";
+        };
+        patchCommands = "cp -r ${k2pdfopt_src}/leptonica_mod/. ./src/";
+      };
+      leptonica_modded = leptonica.overrideAttrs (
+        {
+          patches ? [ ],
+          ...
+        }:
+        {
+          patches = patches ++ [ leptonica_patch ];
+        }
+      );
+
+      tesseract_patch = mkPatch {
+        name = "tesseract";
+        src = fetchFromGitHub {
+          owner = "tesseract-ocr";
+          repo = "tesseract";
+          rev = "5.3.3";
+          hash = "sha256-/aGzwm2+0y8fheOnRi/OJXZy3o0xjY1cCq+B3GTzfos=";
+        };
+        patchCommands = ''
+          cp ${k2pdfopt_src}/tesseract_mod/tesseract.* include/tesseract/
+          cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h include/tesseract/
+          cp ${k2pdfopt_src}/tesseract_mod/{baseapi,config_auto,tesscapi,tesseract}.* src/api/
+          cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h src/api/
+          cp ${k2pdfopt_src}/tesseract_mod/{tesscapi,tessedit,tesseract}.* src/ccmain/
+          cp ${k2pdfopt_src}/tesseract_mod/tesseract/baseapi.h src/ccmain/
+          cp ${k2pdfopt_src}/tesseract_mod/dotproduct{avx,fma,sse}.* src/arch/
+          cp ${k2pdfopt_src}/tesseract_mod/{intsimdmatrixsse,simddetect}.* src/arch/
+          cp ${k2pdfopt_src}/tesseract_mod/{errcode,genericvector,mainblk,params,serialis,tessdatamanager,tess_version,tprintf,unicharset}.* src/ccutil/
+          cp ${k2pdfopt_src}/tesseract_mod/{input,lstmrecognizer}.* src/lstm/
+          cp ${k2pdfopt_src}/tesseract_mod/openclwrapper.* src/opencl/
+        '';
+      };
+      tesseract_modded = tesseract5.override {
+        tesseractBase = tesseract5.tesseractBase.overrideAttrs (
+          {
+            patches ? [ ],
+            buildInputs ? [ ],
+            ...
+          }:
+          {
+            pname = "tesseract-k2pdfopt";
+            version = tesseract_patch.src.rev;
+            src = tesseract_patch.src;
+            # opencl-headers were removed from tesseract in Version 5.4
+            buildInputs = buildInputs ++ [ opencl-headers ];
+            patches = patches ++ [ tesseract_patch ];
+            # Additional compilation fixes
+            postPatch = ''
+              echo libtesseract_la_SOURCES += src/api/tesscapi.cpp >> Makefile.am
+              substituteInPlace src/api/tesseract.h \
+                --replace "#include <leptonica.h>" "//#include <leptonica.h>"
+              substituteInPlace include/tesseract/tesseract.h \
+                --replace "#include <leptonica.h>" "//#include <leptonica.h>"
+            '';
+          }
+        );
+      };
+    in
+    [
+      jbig2dec
+      libjpeg_turbo
+      libpng
+      zlib
+    ]
+    ++ lib.optional enableGSL gsl
+    ++ lib.optional enableGhostScript ghostscript
+    ++ lib.optional enableMuPDF mupdf_modded
+    ++ lib.optional enableDJVU djvulibre
+    ++ lib.optional enableGOCR gocr
+    ++ lib.optionals enableTesseract [
+      leptonica_modded
+      tesseract_modded
+    ];
 
   dontUseCmakeBuildDir = true;
 
@@ -173,7 +225,7 @@ in stdenv.mkDerivation rec {
   '';
 
   preFixup = lib.optionalString enableTesseract ''
-    wrapProgram $out/bin/k2pdfopt --set-default TESSDATA_PREFIX ${tesseract}/share/tessdata
+    wrapProgram $out/bin/k2pdfopt --set-default TESSDATA_PREFIX ${tesseract5}/share/tessdata
   '';
 
   meta = with lib; {
@@ -182,7 +234,9 @@ in stdenv.mkDerivation rec {
     changelog = "https://www.willus.com/k2pdfopt/k2pdfopt_version.txt";
     license = licenses.gpl3;
     platforms = platforms.linux;
-    maintainers = with maintainers; [ bosu danielfullmer ];
+    maintainers = with maintainers; [
+      bosu
+      danielfullmer
+    ];
   };
 }
-