# torchkbnufft -- non-uniform FFT (Kaiser-Bessel gridding, Fessler's NUFFT) in
# PyTorch: forward/adjoint NUFFT, SENSE-NUFFT, Toeplitz embedding and density
# compensation, differentiable, CPU or GPU. Pure Python.
#
# WHY IT IS HERE: non-Cartesian MRI. DeepInverse's radio-interferometry operator
# (deepinv.physics.RadioInterferometry) is built on it, and it is the NUFFT most
# PyTorch MRI reconstruction code uses for radial and spiral trajectories.
#
# Class 1 under docs/PACKAGING-POLICY.md: Fedora ships no package by this source
# name and nothing provides python3dist(torchkbnufft). Verified 2026-10-12:
#   dnf repoquery --whatprovides 'python3dist(torchkbnufft)'  -> empty

%global pypi_name       torchkbnufft

Name:           python-%{pypi_name}
Version:        1.5.2
Release:        1%{?dist}
Summary:        PyTorch non-uniform FFT with Kaiser-Bessel gridding

License:        MIT
URL:            https://github.com/mmuckley/torchkbnufft
# The sdist includes tests/ and their reference data (tests/data/*.pkl, produced
# by tests/data/create_old_data.py from an earlier release, as regression data).
Source0:        %{pypi_source %{pypi_name}}

BuildArch:      noarch

BuildRequires:  python3-devel
BuildRequires:  python3dist(pytest)

%global _description %{expand:
torchkbnufft is a PyTorch implementation of the non-uniform fast Fourier
transform with Kaiser-Bessel interpolation (Fessler and Sutton's NUFFT). It
provides forward and adjoint NUFFT operators, multi-coil SENSE-NUFFT, Toeplitz
embedding of the normal operator and density compensation, all as
differentiable torch modules for 2-D and 3-D non-Cartesian MRI reconstruction.}

%description %_description

%package -n     python3-%{pypi_name}
Summary:        %{summary}

%description -n python3-%{pypi_name} %_description

%prep
%autosetup -p1 -n %{pypi_name}-%{version}

%generate_buildrequires
# Core requirements only: the "tests" extra pins exact old versions of black,
# flake8, mypy, numpy, scipy and torch for upstream CI.
%pyproject_buildrequires

%build
%pyproject_wheel

%install
%pyproject_install
%pyproject_save_files -l %{pypi_name}

%check
%pyproject_check_import
# The tests open tests/data/*.pkl by a path relative to the source root, so they
# run from there. Upstream has no pytest configuration to drop beyond rootdir.
%pytest -c /dev/null --rootdir=. tests -p no:cacheprovider -q -rs

%files -n python3-%{pypi_name} -f %{pyproject_files}
%doc README.md

%changelog
* Mon Oct 12 2026 Morgan Hough <morgan.hough@gmail.com> - 1.5.2-1
- Initial package: non-Cartesian MRI NUFFT for DeepInverse.