firedrake: Initial packaging

firedrake/mpi4py.nix

@@ -0,0 +1,57 @@
+with import <nixpkgs> { };
+
+python27Packages.buildPythonPackage rec {
+  name = "mpi4py-2.0.0";
+
+  src = fetchurl {
+    url = "https://bitbucket.org/mpi4py/mpi4py/downloads/${name}.tar.gz";
+    sha256 = "10fb01595rg17ycz08a23v24akm25d13srsy2rnixam7a5ca0hv5";
+  };
+
+  passthru = {
+    inherit openmpi;
+  };
+
+  # The tests in the `test_spawn` module fail in the chroot build environment.
+  # However, they do pass in a pure, or non-pure nix-shell. Hence, we
+  # deactivate these particular tests.
+  # Unfortunately, the command-line arguments to `./setup.py test` are not
+  # correctly passed to the test-runner. Hence, these arguments are patched
+  # directly into `setup.py`.
+  patchPhase = ''
+    sed 's/err = main(cmd.args or \[\])/err = main(cmd.args or ["-v", "-e", "test_spawn"])/' -i setup.py
+  '';
+
+  configurePhase = "";
+
+  installPhase = ''
+    mkdir -p "$out/lib/${python.libPrefix}/site-packages"
+    export PYTHONPATH="$out/lib/${python.libPrefix}/site-packages:$PYTHONPATH"
+
+    ${python}/bin/${python.executable} setup.py install \
+      --install-lib=$out/lib/${python.libPrefix}/site-packages \
+      --prefix="$out"
+
+    # --install-lib:
+    # sometimes packages specify where files should be installed outside the usual
+    # python lib prefix, we override that back so all infrastructure (setup hooks)
+    # work as expected
+  '';
+
+  setupPyBuildFlags = ["--mpicc=${openmpi}/bin/mpicc"];
+
+  buildInputs = [ openmpi ];
+  # Requires openssh for tests. Tests of dependent packages will also fail,
+  # if openssh is not present. E.g. h5py with mpi support.
+  propagatedBuildInputs = [ openssh ];
+
+  # hangs on some test so just disabled for now
+  doCheck = false;
+
+  meta = {
+    description =
+      "Python bindings for the Message Passing Interface standard";
+    homepage = "http://code.google.com/p/mpi4py/";
+    license = stdenv.lib.licenses.bsd3;
+  };
+}