Provide argvWrapper

bsc/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
+  '';
+}