%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  savvySh
%global packver   0.1.1
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          0.1.1
Release:          1%{?dist}%{?buildtag}
Summary:          Slab and Shrinkage Linear Regression Estimation

License:          GPL (>= 3)
URL:              https://cran.r-project.org/package=%{packname}
Source0:          %{url}&version=%{packver}#/%{packname}_%{packver}.tar.gz


BuildRequires:    R-devel >= 3.6.0
Requires:         R-core >= 3.6.0
BuildArch:        noarch
BuildRequires:    R-CRAN-Matrix 
BuildRequires:    R-CRAN-glmnet 
BuildRequires:    R-CRAN-MASS 
BuildRequires:    R-CRAN-expm 
BuildRequires:    R-CRAN-mnormt 
BuildRequires:    R-stats 
Requires:         R-CRAN-Matrix 
Requires:         R-CRAN-glmnet 
Requires:         R-CRAN-MASS 
Requires:         R-CRAN-expm 
Requires:         R-CRAN-mnormt 
Requires:         R-stats 

%description
Implements a suite of shrinkage estimators for multivariate linear
regression to improve estimation stability and predictive accuracy.
Provides methods including the Stein estimator, Diagonal Shrinkage, the
general Shrinkage estimator (solving a Sylvester equation), and Slab
Regression (Simple and Generalized). These methods address Stein's paradox
by introducing structured bias to reduce variance without requiring
cross-validation, except for 'ShrinkageRR' where the intensity is chosen
by minimizing an explicit Mean Squared Error (MSE) criterion. Methods are
based on Asimit, V., Cidota, M. A., Chen, Z., and Asimit, J. (2025)
<https://openaccess.city.ac.uk/id/eprint/35005/>.

%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}