diff --git a/pkgs/development/libraries/gdcm/default.nix b/pkgs/development/libraries/gdcm/default.nix
index 50ad7bdd9fd6..ca099da02354 100644
--- a/pkgs/development/libraries/gdcm/default.nix
+++ b/pkgs/development/libraries/gdcm/default.nix
@@ -45,7 +45,7 @@ stdenv.mkDerivation rec {
     "-DGDCM_USE_VTK=ON"
   ] ++ lib.optionals enablePython [
     "-DGDCM_WRAP_PYTHON:BOOL=ON"
-    "-DGDCM_INSTALL_PYTHONMODULE_DIR=${placeholder "out"}/${python.sitePackages}"
+    "-DGDCM_INSTALL_PYTHONMODULE_DIR=${placeholder "out"}/${python.sitePackages}/python_gdcm"
   ];
 
   nativeBuildInputs = [
@@ -66,6 +66,13 @@ stdenv.mkDerivation rec {
     libiconv
   ] ++ lib.optionals enablePython [ swig python ];
 
+  postInstall = lib.optionalString enablePython ''
+    substitute \
+      ${./python_gdcm.egg-info} \
+      $out/${python.sitePackages}/python_gdcm-${version}.egg-info \
+      --subst-var-by GDCM_VER "${version}"
+  '';
+
   disabledTests = [
     # require networking:
     "TestEcho"
@@ -77,6 +84,8 @@ stdenv.mkDerivation rec {
     "TestSCUValidation"
     # errors because 3 classes not wrapped:
     "TestWrapPython"
+    # AttributeError: module 'gdcm' has no attribute 'UIDGenerator_SetRoot'; maybe a wrapping regression:
+    "TestUIDGeneratorPython"
   ] ++ lib.optionals (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux) [
     "TestRescaler2"
   ];
diff --git a/pkgs/development/libraries/gdcm/python_gdcm.egg-info b/pkgs/development/libraries/gdcm/python_gdcm.egg-info
new file mode 100644
index 000000000000..d0b2e21f091d
--- /dev/null
+++ b/pkgs/development/libraries/gdcm/python_gdcm.egg-info
@@ -0,0 +1,5 @@
+Metadata-Version: 2.1
+Name: python-gdcm
+Version: @GDCM_VER@
+Summary: C++ library for DICOM medical files wrapped for Python using SWIG
+Platform: UNKNOWN
diff --git a/pkgs/development/python-modules/dicom2nifti/default.nix b/pkgs/development/python-modules/dicom2nifti/default.nix
index 0e12fe09c775..a3b123f84302 100644
--- a/pkgs/development/python-modules/dicom2nifti/default.nix
+++ b/pkgs/development/python-modules/dicom2nifti/default.nix
@@ -8,6 +8,8 @@
   nibabel,
   numpy,
   pydicom,
+  pylibjpeg,
+  pylibjpeg-libjpeg,
   scipy,
   setuptools,
 }:
@@ -37,16 +39,16 @@ buildPythonPackage rec {
     scipy
   ];
 
-  # python-gdcm just builds the python interface provided by the "gdcm" package, so
-  # we should be able to replace "python-gdcm" with "gdcm" but this doesn't work
-  # (similar to https://github.com/NixOS/nixpkgs/issues/84774)
   postPatch = ''
-    substituteInPlace setup.py --replace-fail "python-gdcm" ""
     substituteInPlace tests/test_generic.py --replace-fail "from common" "from dicom2nifti.common"
     substituteInPlace tests/test_ge.py --replace-fail "import convert_generic" "import dicom2nifti.convert_generic as convert_generic"
   '';
 
-  nativeCheckInputs = [ pytestCheckHook ];
+  nativeCheckInputs = [
+    pytestCheckHook
+    pylibjpeg
+    pylibjpeg-libjpeg
+  ];
 
   pythonImportsCheck = [ "dicom2nifti" ];