diff --git a/.travis-install.sh b/.travis-install.sh
index 7ee853c..6ba64cc 100755
--- a/.travis-install.sh
+++ b/.travis-install.sh
@@ -10,5 +10,4 @@ opam --version
 opam --git-version
 
 opam init
-opam switch $OCAML_VERSION
-
+opam switch create $OCAML_VERSION
diff --git a/.travis.yml b/.travis.yml
index 41050d0..1eb9808 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,3 +19,4 @@ env:
   - OCAML_VERSION=4.04.0
   - OCAML_VERSION=4.05.0
   - OCAML_VERSION=4.06.1
+  - OCAML_VERSION=4.07.1
diff --git a/tools/ocp-build/actions/buildActionMake.ml b/tools/ocp-build/actions/buildActionMake.ml
index d27b42d..faba86c 100644
--- a/tools/ocp-build/actions/buildActionMake.ml
+++ b/tools/ocp-build/actions/buildActionMake.ml
@@ -392,6 +392,9 @@ let arg_list =
   "--dot-report", Arg.Set BuildGlobals.dot_report_arg,
   " Create a DOT report in _obuild/_reports";
 
+  "--dot-report-short", Arg.Set BuildGlobals.dot_report_short_arg,
+  " Create a DOT report in _obuild/_reports without installed deps";
+
   "--replay-script", Arg.Set BuildEngineReport.output_replay_script,
   " Generates _obuild/_reports/build-replay.sh";
 
diff --git a/tools/ocp-build/buildGlobals.ml b/tools/ocp-build/buildGlobals.ml
index 158d75d..a0bf5c1 100644
--- a/tools/ocp-build/buildGlobals.ml
+++ b/tools/ocp-build/buildGlobals.ml
@@ -47,6 +47,7 @@ let autogen_arg = ref false
 let list_ocp_files = ref false
 let html_report_arg = ref false
 let dot_report_arg = ref false
+let dot_report_short_arg = ref false
 
 let new_builder_context b = {
   build_context = b;
diff --git a/tools/ocp-build/ocaml/buildOCamlDotReport.ml b/tools/ocp-build/ocaml/buildOCamlDotReport.ml
index 7c0defa..2bd0713 100644
--- a/tools/ocp-build/ocaml/buildOCamlDotReport.ml
+++ b/tools/ocp-build/ocaml/buildOCamlDotReport.ml
@@ -5,13 +5,6 @@ open BuildValue.TYPES
 open BuildOCPTypes
 open Ocamldot.TYPES
 
-let report_dir = "_obuild/_reports"
-let report_dot = "project.dot"
-let report_pdf = "project.pdf"
-
-let report_dot = Filename.concat report_dir report_dot
-let report_pdf = Filename.concat report_dir report_pdf
-
 type node = {
   node_name : string;
   mutable node_requires : node StringMap.t;
@@ -26,7 +19,7 @@ type node = {
 }
 
 
-let report packages =
+let report ~full_graph packages =
 
   let nodes = ref StringMap.empty in
   let add_node node_name =
@@ -110,8 +103,9 @@ let report packages =
         (NodeColor "red"):: attrs
       end in
       let attrs = if n.node_exists then attrs else (NodeShape Diamond) :: attrs in
-      let node = Ocamldot.node t n.node_name attrs in
-      n.node_node <- Some node
+      if full_graph || not n.node_installed then
+        let node = Ocamldot.node t n.node_name attrs in
+        n.node_node <- Some node
   ) !nodes;
 
   StringMap.iter (fun _ n ->
@@ -120,7 +114,8 @@ let report packages =
     | Some node ->
       StringMap.iter (fun _ n2 ->
         match n2.node_node with
-        | None -> assert false
+        | None ->
+          assert (not full_graph && n2.node_installed)
         | Some node2 ->
           let _edge = Ocamldot.edge node node2 [] in
           ()
@@ -171,6 +166,15 @@ let report packages =
   ) !nodes;
 *)
 
+  let report_dir = "_obuild/_reports" in
+
+  let report_dot, report_pdf =
+    if full_graph then "project.dot", "project.pdf"
+    else "project-short.dot", "project-short.pdf"
+  in
+  let report_dot = Filename.concat report_dir report_dot in
+  let report_pdf = Filename.concat report_dir report_pdf in
+
   BuildMisc.safe_mkdir report_dir;
   Ocamldot.save t report_dot;
   let cmd = Printf.sprintf "dot -Tpdf %s -o %s" report_dot report_pdf in
diff --git a/tools/ocp-build/ocaml/buildOCamlDotReport.mli b/tools/ocp-build/ocaml/buildOCamlDotReport.mli
index 60be646..aa4cebe 100644
--- a/tools/ocp-build/ocaml/buildOCamlDotReport.mli
+++ b/tools/ocp-build/ocaml/buildOCamlDotReport.mli
@@ -2,4 +2,5 @@
 open OcpCompat
 
 val report :
+  full_graph : bool ->
   BuildOCamlTypes.ocaml_description StringMap.t -> unit
diff --git a/tools/ocp-build/ocaml/buildOCamlVerifyPackages.ml b/tools/ocp-build/ocaml/buildOCamlVerifyPackages.ml
index 26d153b..2b0cec0 100644
--- a/tools/ocp-build/ocaml/buildOCamlVerifyPackages.ml
+++ b/tools/ocp-build/ocaml/buildOCamlVerifyPackages.ml
@@ -236,7 +236,10 @@ let verify_packages w state =
   let packages = get_uniq_ocaml_packages w state in
 
   if !BuildGlobals.dot_report_arg then
-    BuildOCamlDotReport.report packages;
+    BuildOCamlDotReport.report ~full_graph:true packages;
+
+  if !BuildGlobals.dot_report_short_arg then
+    BuildOCamlDotReport.report ~full_graph:false packages;
 
   let packages =  build_dependency_graph w packages in