From a09a4f7465bed2854f2ae8cf40ddd1049fc4fb93 Mon Sep 17 00:00:00 2001
From: kilyanni <github@nkilian.org>
Date: Thu, 30 Apr 2026 20:25:15 +0200
Subject: [PATCH] python3Packages.scalecodec: init at 1.2.12

---
 .../python-modules/scalecodec/default.nix     | 52 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 54 insertions(+)
 create mode 100644 pkgs/development/python-modules/scalecodec/default.nix

diff --git a/pkgs/development/python-modules/scalecodec/default.nix b/pkgs/development/python-modules/scalecodec/default.nix
new file mode 100644
index 000000000000..3b7f4cfd15ac
--- /dev/null
+++ b/pkgs/development/python-modules/scalecodec/default.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  setuptools,
+  more-itertools,
+  base58,
+  requests,
+  pytestCheckHook,
+}:
+
+buildPythonPackage (finalAttrs: {
+  pname = "scalecodec";
+  version = "1.2.12";
+  pyproject = true;
+
+  __structuredAttrs = true;
+
+  src = fetchFromGitHub {
+    owner = "JAMdotTech";
+    repo = "py-scale-codec";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-e6SDVivkVZjL84kcvkPs+5S2iD79+p+dGjhUWuS50Fc=";
+  };
+
+  build-system = [ setuptools ];
+
+  dependencies = [
+    more-itertools
+    base58
+    requests
+  ];
+
+  # setup.py reads version from TRAVIS_TAG env var
+  env.TRAVIS_TAG = finalAttrs.src.tag;
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "scalecodec" ];
+
+  meta = {
+    description = "Python SCALE Codec Library";
+    longDescription = ''
+      Substrate uses a lightweight and efficient encoding and decoding program to optimize how data is sent and received over the network.
+      The program used to serialize and deserialize data is called the SCALE codec, with SCALE being an acronym for Simple Concatenated Aggregate Little-Endian.
+    '';
+    homepage = "https://github.com/JAMdotTech/py-scale-codec";
+    changelog = "https://github.com/JAMdotTech/py-scale-codec/releases/tag/${finalAttrs.src.tag}";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ kilyanni ];
+  };
+})
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index d66783552dc8..c51a4fe22d5a 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -17315,6 +17315,8 @@ self: super: with self; {
 
   scalar-fastapi = callPackage ../development/python-modules/scalar-fastapi { };
 
+  scalecodec = callPackage ../development/python-modules/scalecodec { };
+
   scalene = callPackage ../development/python-modules/scalene { };
 
   scales = callPackage ../development/python-modules/scales { };