Simplify paths

garlic/nbody/argv.nix

@@ -0,0 +1,29 @@
+{
+  stdenv
+, particles
+, timestamps
+, program
+, config
+}:
+
+stdenv.mkDerivation {
+  inherit program;
+
+  passthru = {
+    inherit config;
+  };
+
+  name = "${program.name}-argv";
+  preferLocalBuild = true;
+  phases = [ "installPhase" ];
+  dontPatchShebangs = true;
+  installPhase = ''
+    mkdir -p $out/bin
+    cat > $out/bin/run <<EOF
+    #!/bin/sh
+    exec ${program}/bin/run -p ${toString config.particles} -t ${toString config.timesteps}
+    EOF
+
+    chmod +x $out/bin/run
+  '';
+}

garlic/nbody/default.nix

@@ -0,0 +1,68 @@
+{
+  stdenv
+, cc
+, mpi ? null
+, tampi ? null
+, mcxx ? null
+, cflags ? null
+, gitBranch
+, gitURL ? "ssh://git@bscpm02.bsc.es/garlic/apps/nbody.git"
+, blocksize ? 2048
+}:
+
+assert !(tampi != null && mcxx == null);
+
+with stdenv.lib;
+stdenv.mkDerivation rec {
+  name = "nbody";
+
+  #src = /home/Computational/rarias/bscpkgs/manual/nbody;
+
+  src = builtins.fetchGit {
+    url = "${gitURL}";
+    ref = "${gitBranch}";
+  };
+  programPath = "/bin/nbody";
+
+  buildInputs = [
+    cc
+  ]
+  ++ optional (mpi != null) mpi
+  ++ optional (tampi != null) tampi
+  ++ optional (mcxx != null) mcxx;
+
+  preBuild = (if cflags != null then ''
+    makeFlagsArray+=(CFLAGS="${cflags}")
+  '' else "");
+
+  postPatch = ""
+
+  # This should be fixed in the Makefile as well.
+  + ''sed -i 's/libtampi.a/libtampi-c.a/g' Makefile
+  ''
+  # Dirty HACK until the nbody issue at:
+  # https://pm.bsc.es/gitlab/garlic/apps/nbody/-/issues/1
+  # is properly fixed.
+  +
+    (if (mpi.pname or "unknown") == "openmpi" then
+      ''sed -i 's/-lstdc++/-lstdc++ -lmpi_cxx/g' Makefile
+      ''
+    else
+      ""
+    );
+
+  makeFlags = [
+    "CC=${cc.cc.CC}"
+    "BS=${toString blocksize}"
+  ]
+  ++ optional (tampi != null) "TAMPI_HOME=${tampi}";
+
+  dontPatchShebangs = true;
+
+  installPhase = ''
+    echo ${tampi}
+    mkdir -p $out/bin
+    cp nbody* $out/bin/${name}
+  '';
+
+}