%global __brp_check_rpaths %{nil}
%global __requires_exclude ^libmpi
%global packname  RXshrink
%global packver   2.3
%global rlibdir   /usr/local/lib/R/library

Name:             R-CRAN-%{packname}
Version:          2.3
Release:          1%{?dist}%{?buildtag}
Summary:          Maximum Likelihood Shrinkage using Generalized Ridge or Least Angle Regression

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


BuildRequires:    R-devel >= 3.5.0
Requires:         R-core >= 3.5.0
BuildArch:        noarch
BuildRequires:    R-CRAN-lars 
BuildRequires:    R-CRAN-ellipse 
Requires:         R-CRAN-lars 
Requires:         R-CRAN-ellipse 

%description
Functions are provided to calculate and display ridge TRACE Diagnostics
for a variety of alternative Shrinkage Paths. While all methods focus on
Maximum Likelihood estimation of unknown true effects under normal
distribution-theory, some estimates are modified to be Unbiased or to have
"Correct Range" when estimating either [1] the noncentrality of the
F-ratio for testing that true Beta coefficients are Zeros or [2] the
"relative" MSE Risk (i.e. MSE divided by true sigma-square, where the
"relative" variance of OLS is known.) The eff.ridge() function implements
the "Efficient Shrinkage Path" introduced in Obenchain (2022) <Open
Statistics>. This "p-Parameter" Shrinkage-Path always passes through the
vector of regression coefficient estimates Most-Likely to achieve the
overall Optimal Variance-Bias Trade-Off and is the shortest Path with this
property. Functions eff.aug() and eff.biv() augment the calculations made
by eff.ridge() to provide plots of the bivariate confidence ellipses
corresponding to any of the p*(p-1) possible ordered pairs of shrunken
regression coefficients. Functions for plotting TRACE Diagnostics now have
more options.

%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}