ds: link the resultTree in the dataset

garlic/pp/merge.nix

@@ -2,15 +2,22 @@
   stdenv
 }:
 
-experiments:
+datasets:
 
 with stdenv.lib;
 
 stdenv.mkDerivation {
-  name = "merge.json";
+  name = "merged-dataset";
   preferLocalBuild = true;
   phases = [ "installPhase" ];
+  inherit datasets;
   installPhase = ''
-    cat ${concatStringsSep " " experiments} >> $out
+    mkdir -p $out
+    n=1
+    for d in $datasets; do
+      ln -s $d $out/$n
+      let n=n+1
+      cat $d/dataset >> $out/dataset
+    done
   '';
 }

garlic/pp/rplot.nix

@@ -144,10 +144,10 @@ in stdenv.mkDerivation {
 
     mkdir -p $out
     cd $out
-    dataset="${dataset}"
+    dataset=$(readlink -f ${dataset}/dataset)
 
     ln -s $dataset input
-    Rscript --vanilla ${script} ${dataset} "$out"
+    Rscript --vanilla ${script} "$dataset" "$out"
 
     # HACK: replace the \minus for a \hyphen to keep the file paths intact, so
     # they can be copied to the terminal directly. The StandardEncoding is not