%global srcname swiglpk

Name:           python-%{srcname}
Version:        5.0.13
Release:        1%{?dist}
Summary:        Plain SWIG Python bindings for the GNU Linear Programming Kit

# The sources carry the GPL v3-or-later header ("either version 3 of the
# License, or (at your option) any later version") in setup.py, the SWIG
# interface and the test; PyPI's metadata says only "GPL v3".
License:        GPL-3.0-or-later
URL:            https://github.com/biosustain/swiglpk
Source:         %{url}/archive/%{version}/%{srcname}-%{version}.tar.gz

BuildRequires:  gcc
BuildRequires:  swig
BuildRequires:  glpk-devel
BuildRequires:  python3-devel
BuildRequires:  pyproject-rpm-macros
BuildRequires:  python3-pytest

%global _description %{expand:
swiglpk exposes GLPK's C API to Python through SWIG with almost no wrapping:
the function and structure names are the C ones (glp_create_prob,
glp_simplex, glp_get_obj_val, ...). It is meant as a base for higher-level
tools rather than for direct use; optlang, and through it COBRApy, call it.}

%description %_description

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

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

%prep
%autosetup -p1 -n %{srcname}-%{version}
# glpk.i carries two hand-written typemap lines that call PyInt_Check and
# PyInt_AsLong. Python 3 has no PyInt_*; SWIG <= 4.4 supplied #defines for them
# in every generated wrapper and SWIG 4.5 (Fedora 45, rawhide) removed that
# block, so the wrapper no longer compiles there. PyLong_* is what the macros
# expanded to.
grep -q 'PyInt_Check(item)' swiglpk/glpk.i || { echo "PyInt_Check not found" >&2; exit 1; }
sed -i 's/PyInt_Check(/PyLong_Check(/;s/PyInt_AsLong(/PyLong_AsLong(/' swiglpk/glpk.i

%generate_buildrequires
%pyproject_buildrequires

%build
# setup.py looks for glpk.h in /usr/include and for swig on PATH; it links the
# system libglpk (libraries=['glpk']), not the static copy PyPI's wheels carry.
%pyproject_wheel

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

%check
# Upstream's one test file (unittest, solves a small LP) against the build root.
# Run from outside the source tree so the installed extension is imported, not
# the unbuilt swiglpk/ directory.
mkdir -p %{_builddir}/swiglpk-check
cp test_swiglpk.py %{_builddir}/swiglpk-check/
cd %{_builddir}/swiglpk-check
%pytest -q test_swiglpk.py

%files -n python3-%{srcname} -f %{pyproject_files}
%doc README.rst

%changelog
* Fri Oct 23 2026 Morgan Hough <morgan.hough@gmail.com> - 5.0.13-1
- Initial package: swiglpk 5.0.13. Net-new to Fedora; links Fedora's
  glpk-devel 5.0 (PyPI wheels bundle GLPK). Required by optlang, hence
  COBRApy.
- NOT BUILT OR RUN YET. This is the only compiled package of the COBRApy
  chain and was written while another build occupied the machine. What was
  checked: setup.py and swiglpk/glpk.i read for the build inputs (glpk.h,
  swig, libglpk), the licence headers, and test_swiglpk.py passes against
  PyPI's cp314 wheel (1 passed).
- Replace PyInt_Check and PyInt_AsLong with PyLong_* in glpk.i: the wrapper did not
  compile on Fedora 45 and rawhide, where SWIG 4.5 no longer defines them.