diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d6ab6a6042a3f16ef45701eec3c1d0bfdc66d9c7..d5f97d3a40cb467cc092fe4739d6d92f41e847bf 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,7 +11,7 @@ build:
     - opam repo add verimag-sync-repo "http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/opam-repository"
     - eval `opam config env`
     - sudo apt-get update
-    - sudo opam depext -y lustre-v6 lutin lablgtk3
+    - opam depext -y lustre-v6 lutin lablgtk3
     - opam install -y dune ocamlgraph lutin lablgtk3
     - make
     - make install
diff --git a/Makefile b/Makefile
index 2c17ae9330f1418b7b0c84516fdfa01ce3f6da77..d1c5913d90a74afea746e6dfeb2b30386e96cfa6 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 
 
-build: 
+build: lib/sasacore/sasaVersion.ml
 	dune build  @install
 
 install:
diff --git a/algo.opam b/algo.opam
index 3ffd70d2fb17a4f14380516ab71c6308e75e37a0..99a01bba5480b5d77f7e5d9981eb73be969470c4 100644
--- a/algo.opam
+++ b/algo.opam
@@ -5,11 +5,11 @@ description: """
 Contains the API to program sasa nodes.
 """
 authors: [ "Erwan Jahier" ]
-license: "CeCILL"
+license: "CeCILL-2.1"
 homepage: "https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa"
 dev-repo: "git+https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa.git"
 bug-reports: "https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa/issues"
-build: ["dune" "build" "-p" name "-j" jobs]
+build: ["dune" "build" ]
 depends: [
   "ocaml"
   "ocamlfind"
diff --git a/gui.opam b/gui.opam
index 1751cd6d92b4d83f6ef3a04e8859037b4e5834d4..f72ba5e1e7f7c746798432a0557379465810a677 100644
--- a/gui.opam
+++ b/gui.opam
@@ -1,6 +1,6 @@
 opam-version: "2.0"
-synopsis: "A Graphical User Interface for XXX"
-description: "sasa is a *Self-stabilizing Algorithms SimulAtor*. XXX"
+synopsis: "A Graphical User Interface for using sasa"
+description: "sasa is a *Self-stabilizing Algorithms SimulAtor*."
 maintainer: "erwan.jahier@univ-grenoble-alpes.fr"
 authors: "erwan.jahier@univ-grenoble-alpes.fr"
 license: "CeCILL-2.1"
@@ -14,7 +14,7 @@ depends: [
   "dune" {>= "2.8.5"}
   "lutils" {>= "0"}
 ]
-build: ["dune" "build" "-p" name "-j" jobs]
+build: ["dune" "build"]
 post-messages:
   "The last version can be obtained via (opam repo add) http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/opam-repository/"
 depexts: ["graphviz" "emacs" "gnuplot" "zathura"]
diff --git a/rdbgui4sasa.opam b/rdbgui4sasa.opam
index 67b380fd15f6456108c4a5c3de1cdd91ee74daba..92ed380d65da806b4673c72719e29f2bdb68c70b 100644
--- a/rdbgui4sasa.opam
+++ b/rdbgui4sasa.opam
@@ -19,7 +19,7 @@ depends: [
   "dune" {>= "2.8.5"}
   "lutils" {>= "0"}
 ]
-build: ["dune" "build" "-p" name "-j" jobs]
+build: ["dune" "build" "@install"]
 post-messages:
   "The last version can be obtained via (opam repo add) http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/opam-repository/"
 depexts: ["graphviz" "emacs" "gnuplot" "zathura"]
diff --git a/sasa.opam b/sasa.opam
index d28b03accf32235eab9cd71550eb797401bfc988..f58fb68aefd098c907ecbf5d5b773e9860ed0711 100644
--- a/sasa.opam
+++ b/sasa.opam
@@ -15,7 +15,6 @@ license: "CeCILL"
 homepage: "https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa"
 dev-repo: "git+https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa.git"
 bug-reports: "https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa/issues"
-build: ["dune" "build" "-p" name "-j" jobs]
 depends: [
   "ocaml" { >= "4.02" }
   "ocamlfind"
@@ -28,5 +27,6 @@ depopts: [
   "lustre-v6"
   "lutin"
   ]
-build: ["dune" "build" "-p" name "-j" jobs]
+build: ["make" "build"]
+install: ["dune" "install"]
 post-messages: ["The last version can be obtained via (opam repo add) http://www-verimag.imag.fr/DIST-TOOLS/SYNCHRONE/opam-repository/ "]
diff --git a/sasacore.opam b/sasacore.opam
index 99a7e4cde0d28ca91b3a4efa87b33a73392b4200..7ed46e06e0a6cf610756ffa69355cfc7be289414 100644
--- a/sasacore.opam
+++ b/sasacore.opam
@@ -16,6 +16,6 @@ depends: [
   "lutils" {>= "1.51"}
 ]
 available: ocaml-version >= "4.02"
-build: ["dune" "build" "-p" name "-j" jobs]
+build: ["dune" "build"]
 dev-repo:
   "git+https://gricad-gitlab.univ-grenoble-alpes.fr/verimag/synchrone/sasa.git"