Move the plot script to R

garlic/fig/nbody/test/default.nix

@@ -0,0 +1,62 @@
+{
+  stdenv
+, gnuplot
+, jq
+, experiments
+, garlicTools
+, getExpResult
+, writeText
+, rWrapper
+, rPackages
+}:
+
+with garlicTools;
+with stdenv.lib;
+
+let
+  experiment = builtins.elemAt experiments 0;
+  expResult = getExpResult {
+    garlicTemp = "/tmp/garlic-temp";
+    trebuchetStage = experiment;
+    experimentStage = getExperimentStage experiment;
+  };
+
+  customR = rWrapper.override {
+    packages = with rPackages; [ tidyverse ];
+  };
+
+  plotScript = ./plot.R;
+
+in stdenv.mkDerivation {
+  name = "plot";
+  buildInputs = [ jq gnuplot customR ];
+  preferLocalBuild = true;
+  dontPatchShebangs = true;
+
+  inherit expResult;
+
+  src = ./.;
+
+  buildPhase = ''
+    echo "using results ${expResult}"
+
+    substituteAllInPlace plot.R
+
+    for unit in ${expResult}/*/*; do
+      name=$(basename $unit)
+      log="$unit/stdout.log"
+      conf="$unit/garlic_config.json"
+      bs=$(jq .blocksize $conf)
+      awk "/^time /{print $bs, \$2}" $log >> data.csv
+    done
+
+    Rscript plot.R
+  '';
+
+  installPhase = ''
+    mkdir $out
+    ln -s ${expResult} $out/result
+    cp *.png $out/
+    cp data.csv $out/
+  '';
+}