diff --git a/pkgs/development/python-modules/character-encoding-utils/default.nix b/pkgs/development/python-modules/character-encoding-utils/default.nix
index ff423f185c5c..a32b2f8159d4 100644
--- a/pkgs/development/python-modules/character-encoding-utils/default.nix
+++ b/pkgs/development/python-modules/character-encoding-utils/default.nix
@@ -1,10 +1,10 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
   pytestCheckHook,
   nix-update-script,
-  hatchling,
+  uv-build,
 }:
 
 buildPythonPackage rec {
@@ -12,13 +12,14 @@ buildPythonPackage rec {
   version = "0.0.12";
   pyproject = true;
 
-  src = fetchPypi {
-    pname = "character_encoding_utils";
-    inherit version;
-    hash = "sha256-sOXdpO7c2EpbNbJK1WIYx/Xb5UGIMW8daw154V/NpU0=";
+  src = fetchFromGitHub {
+    owner = "TakWolf";
+    repo = "character-encoding-utils";
+    tag = version;
+    hash = "sha256-4WaVvr6/d/oePtmwpGJ/D6tv10V/ok9iN4BrqGk97f0=";
   };
 
-  build-system = [ hatchling ];
+  build-system = [ uv-build ];
 
   nativeCheckInputs = [ pytestCheckHook ];
 
diff --git a/pkgs/development/python-modules/pcffont/default.nix b/pkgs/development/python-modules/pcffont/default.nix
index 96d6fac2addc..df4b98240c5b 100644
--- a/pkgs/development/python-modules/pcffont/default.nix
+++ b/pkgs/development/python-modules/pcffont/default.nix
@@ -1,10 +1,10 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
   pytestCheckHook,
   nix-update-script,
-  hatchling,
+  uv-build,
   bdffont,
 }:
 
@@ -13,13 +13,14 @@ buildPythonPackage rec {
   version = "0.0.24";
   pyproject = true;
 
-  src = fetchPypi {
-    pname = "pcffont";
-    inherit version;
-    hash = "sha256-Sax3bUs6ogQ+LuUAy6k1zEfN4WT81zm1LzP2s/6Pecg=";
+  src = fetchFromGitHub {
+    owner = "TakWolf";
+    repo = "pcffont";
+    tag = version;
+    hash = "sha256-32u4FE5QLLqYmRVDuYYGC/laLCRH9phNGi1B9JC+cps=";
   };
 
-  build-system = [ hatchling ];
+  build-system = [ uv-build ];
 
   dependencies = [ bdffont ];
 
diff --git a/pkgs/development/python-modules/pixel-font-builder/default.nix b/pkgs/development/python-modules/pixel-font-builder/default.nix
index b4882e65a6b7..8b4494ad72ff 100644
--- a/pkgs/development/python-modules/pixel-font-builder/default.nix
+++ b/pkgs/development/python-modules/pixel-font-builder/default.nix
@@ -1,10 +1,10 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
   pytestCheckHook,
   nix-update-script,
-  hatchling,
+  uv-build,
   fonttools,
   brotli,
   bdffont,
@@ -17,13 +17,14 @@ buildPythonPackage rec {
   version = "0.0.47";
   pyproject = true;
 
-  src = fetchPypi {
-    pname = "pixel_font_builder";
-    inherit version;
-    hash = "sha256-O3HtwoZUp89mUgVMMcAd4CCPFqQpsyqlmug+QgNpgNQ=";
+  src = fetchFromGitHub {
+    owner = "TakWolf";
+    repo = "pixel-font-builder";
+    tag = version;
+    hash = "sha256-a25JKZy5XaBfpeFwH7YnSTY28hQF8dLa/AGEOXHN94I=";
   };
 
-  build-system = [ hatchling ];
+  build-system = [ uv-build ];
 
   dependencies = [
     fonttools
diff --git a/pkgs/development/python-modules/pixel-font-knife/default.nix b/pkgs/development/python-modules/pixel-font-knife/default.nix
index 6559128b8f88..73ba66f0738c 100644
--- a/pkgs/development/python-modules/pixel-font-knife/default.nix
+++ b/pkgs/development/python-modules/pixel-font-knife/default.nix
@@ -1,11 +1,11 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
   pythonOlder,
   pytestCheckHook,
   nix-update-script,
-  hatchling,
+  uv-build,
   pypng,
   unidata-blocks,
   pyyaml,
@@ -18,13 +18,14 @@ buildPythonPackage rec {
 
   disabled = pythonOlder "3.12";
 
-  src = fetchPypi {
-    pname = "pixel_font_knife";
-    inherit version;
-    hash = "sha256-QTwrxXn5uAp44D/rgbZiCaFP+rDU4H4LGw75n2hQJGs=";
+  src = fetchFromGitHub {
+    owner = "TakWolf";
+    repo = "pixel-font-knife";
+    tag = version;
+    hash = "sha256-f4jaLEPXl8oo1olWBeymMn5a8Tyl07h1TW4pZ5OItZU=";
   };
 
-  build-system = [ hatchling ];
+  build-system = [ uv-build ];
 
   dependencies = [
     pypng
diff --git a/pkgs/development/python-modules/unidata-blocks/default.nix b/pkgs/development/python-modules/unidata-blocks/default.nix
index fe2b5e3a8807..145ce42ed3d6 100644
--- a/pkgs/development/python-modules/unidata-blocks/default.nix
+++ b/pkgs/development/python-modules/unidata-blocks/default.nix
@@ -1,10 +1,10 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
+  fetchFromGitHub,
   pytestCheckHook,
   nix-update-script,
-  hatchling,
+  uv-build,
   langcodes,
 }:
 
@@ -13,13 +13,14 @@ buildPythonPackage rec {
   version = "0.0.24";
   pyproject = true;
 
-  src = fetchPypi {
-    pname = "unidata_blocks";
-    inherit version;
-    hash = "sha256-yQJW4u0v9TrYNPOeEqhOnCcuyrgpj4Qy1ayLBeCgp2E=";
+  src = fetchFromGitHub {
+    owner = "TakWolf";
+    repo = "unidata-blocks";
+    tag = version;
+    hash = "sha256-WGo7Sn2lubsOWfLglBAEx/2PQ1YCrF/wI7/pDwoHMRk=";
   };
 
-  build-system = [ hatchling ];
+  build-system = [ uv-build ];
 
   dependencies = [
     langcodes