%global pypi_name altair

Name:           python-%{pypi_name}
Version:        6.3.0
Release:        1%{?dist}
Summary:        Declarative statistical visualisation for Python, built on Vega-Lite

# altair/vegalite/*/schema/*.json are the Vega-Lite and vega-themes JSON
# schemas, BSD-3-Clause like Altair itself.
License:        BSD-3-Clause
URL:            https://altair-viz.github.io/
Source0:        %{pypi_source %{pypi_name}}

BuildArch:      noarch
BuildRequires:  python3-devel
BuildRequires:  pyproject-rpm-macros
BuildRequires:  python3dist(pandas)

%global _description %{expand:
Vega-Altair builds interactive statistical charts from a declarative grammar:
data, mark type and encoding channels are mapped to a Vega-Lite JSON
specification, which is validated against the Vega-Lite schema and rendered by
the Vega JavaScript runtime in a notebook or a standalone HTML page. Saving to
PNG, SVG or PDF needs the separate vl-convert package.}

%description %_description

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

%prep
%autosetup -n %{pypi_name}-%{version}
# The version comes from versioningit's git-archive method, which an sdist
# cannot satisfy: it falls back to "4.0.0+fallback". Pin it.
sed -i 's/^dynamic = \["version"\]$/version = "%{version}"/' pyproject.toml
grep -q '^version = "%{version}"$' pyproject.toml
sed -i '/^\[tool.hatch.version\]/,/^$/d; /^\[tool.hatch.version.vcs\]/,/^$/d' pyproject.toml
! grep -q 'tool.hatch.version' pyproject.toml

%generate_buildrequires
%pyproject_buildrequires

%build
%pyproject_wheel

%install
%pyproject_install
%pyproject_save_files %{pypi_name}

%check
# altair.jupyter needs anywidget; vegalite.v6.display's vl-convert paths and
# the magics are optional extras.
%pyproject_check_import -e 'altair.jupyter*' -e 'altair._magics'
cd %{_builddir}
# The sdist carries no tests. Build a layered, encoded chart, validate it
# against the bundled Vega-Lite schema and write standalone HTML.
%{py3_test_envvars} %{python3} - <<'PYEOF'
import json, jsonschema, pandas as pd, altair as alt
assert alt.__version__ == "%{version}", alt.__version__
df = pd.DataFrame({"x": range(10), "y": [v * v for v in range(10)], "g": list("ab") * 5})
base = alt.Chart(df).encode(x="x:Q", y="y:Q", color="g:N")
chart = (base.mark_line() + base.mark_point()).properties(title="t")
spec = chart.to_dict()   # validates against the schema
assert spec["$schema"].startswith("https://vega.github.io/schema/vega-lite/v6")
assert len(spec["layer"]) == 2
try:
    alt.Chart(df).mark_point().encode(x="x:Q").properties(width="wide").to_dict()
except jsonschema.ValidationError:
    pass
else:
    raise AssertionError("invalid width accepted")
chart.save("chart.html")
assert "vegaEmbed" in open("chart.html").read()
print("altair ok")
PYEOF

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

%changelog
* Fri Oct 16 2026 Morgan Hough <morgan.hough@gmail.com> - 6.3.0-1
- Initial package (pyAFQ dependency).