%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  shrinkGPR
%global packver   1.0.0
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          1.0.0
Release:          1%{?dist}%{?buildtag}
Summary:          Scalable Gaussian Process Regression with Hierarchical Shrinkage Priors

License:          GPL (>= 2)
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 4.0.0
Requires:         R-core >= 4.0.0
BuildArch:        noarch
BuildRequires:    R-CRAN-gsl 
BuildRequires:    R-CRAN-progress 
BuildRequires:    R-CRAN-rlang 
BuildRequires:    R-utils 
BuildRequires:    R-methods 
BuildRequires:    R-CRAN-torch 
Requires:         R-CRAN-gsl 
Requires:         R-CRAN-progress 
Requires:         R-CRAN-rlang 
Requires:         R-utils 
Requires:         R-methods 
Requires:         R-CRAN-torch 

%description
Efficient variational inference methods for fully Bayesian Gaussian
Process Regression (GPR) models with hierarchical shrinkage priors,
including the triple gamma prior for effective variable selection and
covariance shrinkage in high-dimensional settings. The package leverages
normalizing flows to approximate complex posterior distributions. For
details on implementation, see Knaus (2025)
<doi:10.48550/arXiv.2501.13173>.

%prep
%setup -q -c -n %{packname}

# fix end of executable files
find -type f -executable -exec grep -Iq . {} \; -exec sed -i -e '$a\' {} \;
# prevent binary stripping
[ -d %{packname}/src ] && find %{packname}/src -type f -exec \
  sed -i 's@/usr/bin/strip@/usr/bin/true@g' {} \; || true
[ -d %{packname}/src ] && find %{packname}/src/Make* -type f -exec \
  sed -i 's@-g0@@g' {} \; || true
# don't allow local prefix in executable scripts
find -type f -executable -exec sed -Ei 's@#!( )*/usr/local/bin@#!/usr/bin@g' {} \;

%build

%install

mkdir -p %{buildroot}%{rlibdir}
%{_bindir}/R CMD INSTALL -l %{buildroot}%{rlibdir} %{packname}
test -d %{packname}/src && (cd %{packname}/src; rm -f *.o *.so)
rm -f %{buildroot}%{rlibdir}/R.css
# remove buildroot from installed files
find %{buildroot}%{rlibdir} -type f -exec sed -i "s@%{buildroot}@@g" {} \;

%files
%{rlibdir}/%{packname}