2 files changed, 22 insertions, 7 deletions
diff --git a/pkgs/tools/text/ocrmypdf/default.nix b/pkgs/tools/text/ocrmypdf/default.nix
index 13353daa171..cdc6878bb5a 100644
--- a/pkgs/tools/text/ocrmypdf/default.nix
+++ b/pkgs/tools/text/ocrmypdf/default.nix
@@ -10,6 +10,7 @@
 , stdenv
 , tesseract4
 , unpaper
+, substituteAll
 }:
 
 let
@@ -28,14 +29,14 @@ let
 
 in buildPythonApplication rec {
   pname = "ocrmypdf";
-  version = "9.2.0";
+  version = "9.5.0";
   disabled = ! python3Packages.isPy3k;
 
   src = fetchFromGitHub {
     owner = "jbarlow83";
     repo = "OCRmyPDF";
     rev = "v${version}";
-    sha256 = "1mvc6x5nn242z65pxv39ch71vaikgi89bb0sjbfy2jbw91vk41xa";
+    sha256 = "0rvwxykyscpcvfgm8zzyvjgzl9x9ddi9cxmqyxrc031mxpc0lzyy";
   };
 
   nativeBuildInputs = with python3Packages; [
@@ -68,11 +69,12 @@ in buildPythonApplication rec {
     setuptools
   ] ++ runtimeDeps;
 
-  postPatch = ''
-    substituteInPlace src/ocrmypdf/leptonica.py \
-      --replace "lept = ffi.dlopen(_libpath)" \
-      'lept = ffi.dlopen("${stdenv.lib.makeLibraryPath [leptonica]}/liblept${stdenv.hostPlatform.extensions.sharedLibrary}")'
-  '';
+  patches = [
+    (substituteAll {
+      src = ./liblept.patch;
+      liblept = "${stdenv.lib.getLib leptonica}/lib/liblept${stdenv.hostPlatform.extensions.sharedLibrary}";
+    })
+  ];
 
   # The tests take potentially 20+ minutes, depending on machine
   doCheck = false;
diff --git a/pkgs/tools/text/ocrmypdf/liblept.patch b/pkgs/tools/text/ocrmypdf/liblept.patch
new file mode 100644
index 00000000000..ed413a8b37b
--- /dev/null
+++ b/pkgs/tools/text/ocrmypdf/liblept.patch
@@ -0,0 +1,13 @@
+diff --git a/src/ocrmypdf/leptonica.py b/src/ocrmypdf/leptonica.py
+index 328b063..b993cc9 100644
+--- a/src/ocrmypdf/leptonica.py
++++ b/src/ocrmypdf/leptonica.py
+@@ -46,7 +46,7 @@ if os.name == 'nt':
+     os.environ['PATH'] = shim_paths_with_program_files()
+ else:
+     libname = 'lept'
+-_libpath = find_library(libname)
++_libpath = '@liblept@'
+ if not _libpath:
+     raise MissingDependencyError(
+         """