diff --git a/pkgs/by-name/me/megapixels/package.nix b/pkgs/by-name/me/megapixels/package.nix
index 91bd2b302b94..34eefdcbf139 100644
--- a/pkgs/by-name/me/megapixels/package.nix
+++ b/pkgs/by-name/me/megapixels/package.nix
@@ -54,6 +54,12 @@ stdenv.mkDerivation (finalAttrs: {
     zbar
   ];
 
+  patches = [
+    # In the settings menu of Megapixels the user can select a different postprocessing script. The path to the script is then stored in a dconf setting. If the path changes, for example because it is in the Nix store and a dependency of the postprocessor changes, Megapixels will try to use this now non-existing old path. This will cause Megapixels to not save any images that were taken until the user opens the settings again and selects a postprocessor again. Using a global path allows the setting to keep working.
+    # Note that this patch only fixes the issue for external postprocessors like postprocessd but the postprocessor script that comes with Megapixels is still refered to by the Nix store path.
+    ./search-for-postprocessors-in-NixOS-specific-global-location.patch
+  ];
+
   postInstall = ''
     glib-compile-schemas $out/share/glib-2.0/schemas
   '';
diff --git a/pkgs/by-name/me/megapixels/search-for-postprocessors-in-NixOS-specific-global-location.patch b/pkgs/by-name/me/megapixels/search-for-postprocessors-in-NixOS-specific-global-location.patch
new file mode 100644
index 000000000000..85320316de02
--- /dev/null
+++ b/pkgs/by-name/me/megapixels/search-for-postprocessors-in-NixOS-specific-global-location.patch
@@ -0,0 +1,27 @@
+--- a/src/process_pipeline.c
++++ b/src/process_pipeline.c
+@@ -179,10 +179,10 @@ mp_process_find_all_processors(GtkListStore *store)
+                         store, &iter, 0, buffer, 1, "(built-in) postprocess.sh", -1);
+         }
+ 
+-        // Find extra packaged postprocessor scripts
+-        // These should be packaged in
+-        // /usr/share/megapixels/postprocessor.d/executable
+-        sprintf(buffer, "%s/megapixels/postprocessor.d", DATADIR);
++        // Find extra system postprocessor scripts
++        // These should be accessible in
++        // /run/current-system/sw/share/megapixels/postprocessor.d/executable
++        sprintf(buffer, "/run/current-system/sw/share/megapixels/postprocessor.d");
+         DIR *d;
+         struct dirent *dir;
+         d = opendir(buffer);
+@@ -192,8 +192,7 @@ mp_process_find_all_processors(GtkListStore *store)
+                                 continue;
+                         }
+                         sprintf(buffer,
+-                                "%s/megapixels/postprocessor.d/%s",
+-                                DATADIR,
++                                "/run/current-system/sw/share/megapixels/postprocessor.d/%s",
+                                 dir->d_name);
+                         gtk_list_store_insert(store, &iter, -1);
+                         gtk_list_store_set(
diff --git a/pkgs/by-name/po/postprocessd/package.nix b/pkgs/by-name/po/postprocessd/package.nix
new file mode 100644
index 000000000000..ef74fd7ad53b
--- /dev/null
+++ b/pkgs/by-name/po/postprocessd/package.nix
@@ -0,0 +1,53 @@
+{
+  lib,
+  fetchFromSourcehut,
+  libexif,
+  libraw,
+  meson,
+  ninja,
+  opencv4,
+  pkg-config,
+  scdoc,
+  stdenv,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "postprocessd";
+  version = "0.3.0";
+
+  src = fetchFromSourcehut {
+    owner = "~martijnbraam";
+    repo = "postprocessd";
+    rev = finalAttrs.version;
+    hash = "sha256-xqEjjAv27TUrEU/5j8Um7fTFjmIYZovyJCccbtHPuGo=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    scdoc
+  ];
+
+  depsBuildBuild = [
+    pkg-config
+  ];
+
+  buildInputs = [
+    libexif
+    libraw
+    opencv4
+  ];
+
+  strictDeps = true;
+
+  meta = {
+    description = "Queueing megapixels post-processor";
+    homepage = "https://git.sr.ht/~martijnbraam/postprocessd";
+    changelog = "https://git.sr.ht/~martijnbraam/postprocessd/refs/${finalAttrs.version}";
+    license = lib.licenses.gpl3Only;
+    maintainers = with lib.maintainers; [ Luflosi ];
+    platforms = lib.platforms.linux;
+    mainProgram = "postprocess-single";
+  };
+})