From 185611390cb96448197c79a60964048ce1820218 Mon Sep 17 00:00:00 2001
From: Fabian Affolter <fabian@affolter-engineering.ch>
Date: Sun, 31 Aug 2025 17:30:23 +0200
Subject: [PATCH 1/2] python312Packages.databackend: init at 0.0.3

Module to register a subclass, without needing to import the subclass itself

https://github.com/machow/databackend
---
 .../python-modules/databackend/default.nix    | 42 +++++++++++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 2 files changed, 44 insertions(+)
 create mode 100644 pkgs/development/python-modules/databackend/default.nix

diff --git a/pkgs/development/python-modules/databackend/default.nix b/pkgs/development/python-modules/databackend/default.nix
new file mode 100644
index 000000000000..411ede055742
--- /dev/null
+++ b/pkgs/development/python-modules/databackend/default.nix
@@ -0,0 +1,42 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  pip-tools,
+  pytestCheckHook,
+  setuptools-scm,
+  setuptools,
+}:
+
+buildPythonPackage rec {
+  pname = "databackend";
+  version = "0.0.3";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "machow";
+    repo = "databackend";
+    tag = "v${version}";
+    hash = "sha256-M5Nm33Vae6FDy4aurru4CeHjeNxyZZnqzpdkqNEvrm0=";
+  };
+
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+    pip-tools
+  ];
+
+  pythonImportsCheck = [ "databackend" ];
+
+  meta = {
+    description = "Module to register a subclass, without needing to import the subclass itself";
+    homepage = "https://github.com/machow/databackend";
+    changelog = "https://github.com/machow/databackend/releases/tag/${src.tag}";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index e49a820de7b6..ff8a80968608 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3323,6 +3323,8 @@ self: super: with self; {
 
   dask-yarn = callPackage ../development/python-modules/dask-yarn { };
 
+  databackend = callPackage ../development/python-modules/databackend { };
+
   databases = callPackage ../development/python-modules/databases { };
 
   databricks-cli = callPackage ../development/python-modules/databricks-cli { };

From 6f5de8114f811e3e13f7a8e8ac44c93677bb457a Mon Sep 17 00:00:00 2001
From: Fabian Affolter <fabian@affolter-engineering.ch>
Date: Sun, 31 Aug 2025 17:32:47 +0200
Subject: [PATCH 2/2] python312Packages.pins: add missing inputs

---
 pkgs/development/python-modules/pins/default.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/python-modules/pins/default.nix b/pkgs/development/python-modules/pins/default.nix
index 1a2d5b2a05ff..58f27726b200 100644
--- a/pkgs/development/python-modules/pins/default.nix
+++ b/pkgs/development/python-modules/pins/default.nix
@@ -3,6 +3,7 @@
   adlfs,
   appdirs,
   buildPythonPackage,
+  databackend,
   fastparquet,
   fetchFromGitHub,
   fsspec,
@@ -21,8 +22,9 @@
   pyyaml,
   requests,
   s3fs,
-  setuptools,
   setuptools-scm,
+  setuptools,
+  typing-extensions,
   xxhash,
 }:
 
@@ -31,7 +33,7 @@ buildPythonPackage rec {
   version = "0.9.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.8";
+  disabled = pythonOlder "3.9";
 
   src = fetchFromGitHub {
     owner = "rstudio";
@@ -47,6 +49,7 @@ buildPythonPackage rec {
 
   dependencies = [
     appdirs
+    databackend
     fsspec
     humanize
     importlib-metadata
@@ -56,6 +59,7 @@ buildPythonPackage rec {
     pandas
     pyyaml
     requests
+    typing-extensions
     xxhash
   ];