diff --git a/pkgs/development/python-modules/lm-eval/default.nix b/pkgs/development/python-modules/lm-eval/default.nix
index 63087a8505a0..fa1830e3bd4d 100644
--- a/pkgs/development/python-modules/lm-eval/default.nix
+++ b/pkgs/development/python-modules/lm-eval/default.nix
@@ -2,58 +2,76 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+
+  # build-system
   setuptools-scm,
+
+  # dependencies
   accelerate,
-  aiohttp,
-  antlr4-python3-runtime,
-  causal-conv1d,
   datasets,
   dill,
   evaluate,
-  hf-transfer,
-  immutabledict,
   jsonlines,
-  langdetect,
-  mamba-ssm,
   more-itertools,
-  nltk,
   numexpr,
-  numpy,
-  optimum,
-  pandas,
   peft,
   pybind11,
   pytablewriter,
-  pytestCheckHook,
-  requests,
   rouge-score,
   sacrebleu,
   scikit-learn,
-  sentencepiece,
   sqlitedict,
-  sympy,
-  tenacity,
-  tiktoken,
   torch,
-  tqdm,
   tqdm-multiprocess,
   transformers,
-  vllm,
-  wandb,
   word2number,
   zstandard,
+
+  # optional-dependencies
+  # api
+  aiohttp,
+  requests,
+  tenacity,
+  tiktoken,
+  tqdm,
+  # hf_transfer
+  hf-transfer,
+  # ifeval
+  immutabledict,
+  langdetect,
+  nltk,
+  # neuronx
+  optimum,
+  # mamba
+  causal-conv1d,
+  mamba-ssm,
+  # math
+  antlr4-python3-runtime,
+  sympy,
+  # sentencepiece
+  sentencepiece,
+  # vllm
+  vllm,
+  # wandb
+  numpy,
+  pandas,
+  wandb,
+
+  # tests
+  pytestCheckHook,
+  writableTmpDirAsHomeHook,
 }:
 
 buildPythonPackage rec {
   pname = "lm-eval";
-  version = "0.4.8";
+  version = "0.4.9.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "EleutherAI";
     repo = "lm-evaluation-harness";
     tag = "v${version}";
-    hash = "sha256-F8oy6XTovqiU7FQyuubRsiblSdvfZg9RPIyzRw2GH18=";
+    hash = "sha256-N5NRRabjWxPchwOIkjqYTCKInCmVSY6T5cAmdxNbCkU=";
   };
 
   build-system = [
@@ -84,34 +102,34 @@ buildPythonPackage rec {
 
   optional-dependencies = {
     api = [
-      requests
       aiohttp
+      requests
       tenacity
-      tqdm
       tiktoken
+      tqdm
     ];
     hf_transfer = [ hf-transfer ];
     ifeval = [
-      langdetect
       immutabledict
+      langdetect
       nltk
     ];
     neuronx = [ optimum ] ++ optimum.optional-dependencies.neuronx;
     mamba = [
-      mamba-ssm
       causal-conv1d
+      mamba-ssm
     ];
     math = [
-      sympy
       antlr4-python3-runtime
+      sympy
     ];
     optimum = [ optimum ] ++ optimum.optional-dependencies.openvino;
     sentencepiece = [ sentencepiece ];
     vllm = [ vllm ];
     wandb = [
-      wandb
-      pandas
       numpy
+      pandas
+      wandb
     ];
     # Still missing dependencies for the following:
     # deepsparse, gptq, ibm_watsonx_ai, multilingual, promptsource, sparseml,
@@ -122,16 +140,16 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [
     pytestCheckHook
+    writableTmpDirAsHomeHook
   ]
   ++ optional-dependencies.api;
 
-  preCheck = ''
-    export HOME=$TMP
-  '';
-
   disabledTests = [
     "test_deepsparse" # deepsparse is not available
-    "test_model_tokenized_call_usage" # downloads a model
+
+    # download models from the internet
+    "test_get_batched_requests_with_no_ssl"
+    "test_model_tokenized_call_usage"
   ];
 
   disabledTestPaths = [
@@ -142,9 +160,13 @@ buildPythonPackage rec {
     "tests/test_prompt.py"
     "tests/test_task_manager.py"
     "tests/test_tasks.py"
+    "tests/test_unitxt_tasks.py"
 
     # optimum-intel is not available
     "tests/models/test_openvino.py"
+
+    # zeno-client is not packaged
+    "tests/scripts/test_zeno_visualize.py"
   ];
 
   meta = {
diff --git a/pkgs/development/python-modules/mlx-lm/default.nix b/pkgs/development/python-modules/mlx-lm/default.nix
index 44040dd7f0b9..ff926ff5305e 100644
--- a/pkgs/development/python-modules/mlx-lm/default.nix
+++ b/pkgs/development/python-modules/mlx-lm/default.nix
@@ -2,13 +2,20 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+
+  # build-system
   setuptools,
+
+  # dependencies
   jinja2,
   mlx,
   numpy,
   protobuf,
   pyyaml,
   transformers,
+
+  # tests
+  lm-eval,
   sentencepiece,
   pytestCheckHook,
   writableTmpDirAsHomeHook,
@@ -40,9 +47,10 @@ buildPythonPackage rec {
   ];
 
   nativeCheckInputs = [
-    writableTmpDirAsHomeHook
+    lm-eval
     pytestCheckHook
     sentencepiece
+    writableTmpDirAsHomeHook
   ];
 
   pythonImportsCheck = [
@@ -62,6 +70,7 @@ buildPythonPackage rec {
     "tests/test_prompt_cache.py::TestPromptCache::test_cache_with_generate"
     "tests/test_prompt_cache.py::TestPromptCache::test_trim_cache_with_generate"
     # RuntimeError: [metal_kernel] No GPU back-end.
+    "tests/test_losses.py"
     "tests/test_models.py::TestModels::test_bitnet"
   ];