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nixpkgs/pkgs/development/python-modules/py/default.nix
Frederik Rietdijk f7e28bf5d8 Split buildPythonPackage into setup hooks
This commit splits the `buildPythonPackage` into multiple setup hooks.

Generally, Python packages are built from source to wheels using `setuptools`.
The wheels are then installed with `pip`. Tests were often called with
`python setup.py test` but this is less common nowadays. Most projects
now use a different entry point for running tests, typically `pytest`
or `nosetests`.

Since the wheel format was introduced more tools were built to generate these,
e.g. `flit`. Since PEP 517 is provisionally accepted, defining a build-system
independent format (`pyproject.toml`), `pip` can now use that format to
execute the correct build-system.

In the past I've added support for PEP 517 (`pyproject`) to the Python
builder, resulting in a now rather large builder. Furthermore, it was not possible
to reuse components elsewhere. Therefore, the builder is now split into multiple
setup hooks.

The `setuptoolsCheckHook` is included now by default but in time it should
be removed from `buildPythonPackage` to make it easier to use another hook
(curently one has to pass in `dontUseSetuptoolsCheck`).
2019-09-06 15:18:45 +02:00

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{ stdenv, buildPythonPackage, fetchPypi, setuptools_scm }:
buildPythonPackage rec {
pname = "py";
version = "1.8.0";
src = fetchPypi {
inherit pname version;
sha256 = "0lsy1gajva083pzc7csj1cvbmminb7b4l6a0prdzyb3fd829nqyw";
};
# Circular dependency on pytest
doCheck = false;
nativeBuildInputs = [ setuptools_scm ];
pythonImportsCheck = [
"py"
];
meta = with stdenv.lib; {
description = "Library with cross-python path, ini-parsing, io, code, log facilities";
homepage = https://pylib.readthedocs.org/;
license = licenses.mit;
};
}