precice: fix output and cmake

pkgs/development/libraries/precice/default.nix

@@ -1,26 +1,35 @@
-{ lib, stdenv, fetchFromGitHub, cmake, gcc, boost, eigen, libxml2, openmpi, python2, python2Packages }:
+{ lib, stdenv, fetchFromGitHub, cmake, gcc, boost, eigen, libxml2, openmpi, python3, python3Packages }:
 
 stdenv.mkDerivation rec {
   pname = "precice";
-  version = "1.6.1";
+  version = "2020-01-20";
+  # Todo next release switch back to versioning but for python3 support master is needed
 
   src = fetchFromGitHub {
     owner = "precice";
     repo = pname;
-    rev = "v${version}";
-    sha256 = "00631zw6cpm67j35cwad04nwgfcvlxa8p660fwz30pgj2hzdx3d2";
+    rev = "9f778290416416255fc73a495e962def301648b0";
+    sha256 = "1ij43qjbf1aq3lh91gqpviajc8lyl7qkxfccmj5md5vwf88vjaip";
   };
 
-  preConfigure = ''
-    cmakeFlags="-DBUILD_SHARED_LIBS=ON -DPETSC=off"
-  '';
+  cmakeFlags = [
+    "-DBUILD_SHARED_LIBS=ON"
+    "-DPETSC=off"
+    "-DPYTHON_LIBRARIES=${python3.libPrefix}"
+    "-DPYTHON_INCLUDE_DIR=${python3}/include/${python3.libPrefix}m"
+  ];
 
   nativeBuildInputs = [ cmake gcc ];
-  buildInputs = [ boost eigen libxml2 openmpi python2 python2Packages.numpy ];
-  installPhase = ''
-    mkdir -p $out/lib
-    cp libprecice.so libprecice.so.1.6.1 $out/lib/
-  '';
+  buildInputs = [ boost eigen libxml2 openmpi python3 python3Packages.numpy ];
+  patches = [
+    ./0001-Fix-the-install-target-dirs-to-use-the-CMAKE-flags.patch # CMake Packaging is not perfect upstream, after this PR it is https://github.com/precice/precice/pull/577/files
+  ];
+  enableParallelBuilding = true;
+
+  postInstall = ''
+      substituteInPlace "$out"/lib/cmake/precice/preciceTargets.cmake \
+      --replace 'INTERFACE_INCLUDE_DIRECTORIES "''${_IMPORT_PREFIX}/include;' 'INTERFACE_INCLUDE_DIRECTORIES "'$out/include';'
+  ''; # Check if this can be removed after upstream PR 577
 
   meta = {
     description = "preCICE stands for Precise Code Interaction Coupling Environment";
@@ -31,3 +40,4 @@ stdenv.mkDerivation rec {
   };
 }
 
+