Trying to package python library which has specified setuptools less thatn latest version

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1

I am trying to package the python package sanic-ext which has some extensions for Sanic. I am running into the following error

       > ERROR Missing dependencies:
       > 	setuptools<60.0

but setuptools is specified as a dependancy in the same way that the other sanic packages does it. So I think the issue is that the latest version of setuptools on nixpkgs is later than version 60. So how should I resolve it? Just ask the sanic project for the reason of that they specified that version of setuptools and see if they can remove it? Or should I just patch it out before buildring?

2

Historically, we used to patch this with something like substituteInPlace setup.py .... However now we have pythonRelaxDepsHook:

  nativeBuildInputs = [
    pythonRelaxDepsHook
    setuptools
  ];

  pythonRelaxDeps = [
    "setuptools"
  ];

Should be what you want. pythonRelaxDepsHook works by modifying the .whl to remove version constraints.

3

That sounds good. Is that preferred to making my own patch or contacting upstream?

4

Good question. Depends on the project. Setuptools has been deprecating things, so pinning may have been warranted at one time.

Usually it doesn’t hurt to try.

5

I have gotten it to build by making my own patch, but I cannot get your supplied hook to work. Here is my current package defintion

{ lib
, python3Packages
, fetchFromGitHub
,buildPythonPackage
,setuptools
,wheel
,pyyaml
,sanic
,pythonRelaxDepsHook
}:

buildPythonPackage rec {
  pname = "sanic-ext";
  version = "23.12.0";
  pyproject = true;

  src = fetchFromGitHub {
    owner = "sanic-org";
    repo = "sanic-ext";
    rev = "v${version}";
    hash = "sha256-KbcY480mxZw+t6WQktOz3h7oyIxWx1jR3ODOjf7psM0=";
  };

    propagatedBuildInputs = [
    pyyaml
    sanic
  ];



  nativeBuildInputs = with python3Packages; [
    pythonRelaxDepsHook
    setuptools
    wheel
  ];

  pythonImportsCheck = [ "sanic_ext" ];

  meta = with lib; {
    description = "Extended Sanic functionality";
    homepage = "https://github.com/sanic-org/sanic-ext";
    changelog = "https://github.com/sanic-org/sanic-ext/blob/${src.rev}/CHANGELOG.md";
    license = licenses.mit;
    maintainers = with maintainers; [ ];
    mainProgram = "sanic-ext";
  };
}

The hook appears to be a postbuild hook, but it fails during the build step, so I am not sure how the hook is intended to work in my case.

6

Sorry, you need to specify which deps you want to relax:

  pythonRelaxDeps = [
    "jinja2"
    "packaging"
  ];

  nativeBuildInputs = [
    poetry-core
    pythonRelaxDepsHook
  ];

I’ll modify my original post

7

Still getting the same problem unfortunatelly. Here is the build log.

Sourcing python-remove-tests-dir-hook
Sourcing python-catch-conflicts-hook.sh
Sourcing python-remove-bin-bytecode-hook.sh
Sourcing pypa-build-hook
Using pypaBuildPhase
Sourcing python-runtime-deps-check-hook
Using pythonRuntimeDepsCheckHook
Sourcing pypa-install-hook
Using pypaInstallPhase
Sourcing python-imports-check-hook.sh
Using pythonImportsCheckPhase
Sourcing python-namespaces-hook
Sourcing python-catch-conflicts-hook.sh
@nix { "action": "setPhase", "phase": "unpackPhase" }
Running phase: unpackPhase
unpacking source archive /nix/store/xk2z6h568flpyb3hif59162l51j4z70k-source
source root is source
setting SOURCE_DATE_EPOCH to timestamp 315619200 of file source/tox.ini
@nix { "action": "setPhase", "phase": "patchPhase" }
Running phase: patchPhase
@nix { "action": "setPhase", "phase": "updateAutotoolsGnuConfigScriptsPhase" }
Running phase: updateAutotoolsGnuConfigScriptsPhase
@nix { "action": "setPhase", "phase": "configurePhase" }
Running phase: configurePhase
no configure script, doing nothing
@nix { "action": "setPhase", "phase": "buildPhase" }
Running phase: buildPhase
Executing pypaBuildPhase
Creating a wheel...
* Getting build dependencies for wheel...
running egg_info
creating sanic_ext.egg-info
writing sanic_ext.egg-info/PKG-INFO
writing dependency_links to sanic_ext.egg-info/dependency_links.txt
writing requirements to sanic_ext.egg-info/requires.txt
writing top-level names to sanic_ext.egg-info/top_level.txt
writing manifest file 'sanic_ext.egg-info/SOURCES.txt'
reading manifest file 'sanic_ext.egg-info/SOURCES.txt'
adding license file 'LICENSE'
writing manifest file 'sanic_ext.egg-info/SOURCES.txt'

ERROR Missing dependencies:
	setuptools<60.0

I still do not get how this hook, which is a post-build hook, can solve a problem in the build step?