scs: init at 2.0.2 (#45294)

pkgs/development/libraries/science/math/scs/default.nix

···
+{ stdenv, fetchFromGitHub, blas, liblapack, gfortran }:
+
+stdenv.mkDerivation rec {
+  name = "scs-${version}";
+  version = "2.0.2";
+
+  src = fetchFromGitHub {
+    owner = "cvxgrp";
+    repo = "scs";
+    rev = "v${version}";
+    sha256 = "17lbcmcsniqlyzgbzmjipfd0rrk25a8hzh7l5wl2wp1iwsd8c3a9";
+  };
+
+  buildInputs = [ blas liblapack gfortran.cc.lib ];
+
+  # Actually link and add libgfortran to the rpath
+  patchPhase = ''
+    sed -i 's/#-lgfortran/-lgfortran/' scs.mk
+  '';
+
+  doCheck = true;
+
+  # Test demo requires passing any int as $1; 42 chosen arbitrarily
+  checkPhase = ''
+    ./out/demo_socp_indirect 42
+  '';
+
+  installPhase = ''
+    mkdir -p $out/lib
+    cp -r include $out/
+    cp out/*.a out/*.so $out/lib/
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Splitting Conic Solver";
+    longDescription = ''
+      Numerical optimization package for solving large-scale convex cone problems
+    '';
+    homepage = https://github.com/cvxgrp/scs;
+    license = licenses.mit;
+    platforms = platforms.all;
+    maintainers = [ maintainers.bhipple ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
   petsc = callPackage ../development/libraries/science/math/petsc { };
 
+  scs = callPackage ../development/libraries/science/math/scs {
+    liblapack = liblapackWithoutAtlas;
+  };
+
   sage = callPackage ../applications/science/math/sage {
     nixpkgs = pkgs;
   };