diff --git a/desktop/app-bureautique.nix b/desktop/app-bureautique.nix
index d5f1250..4b78222 100644
--- a/desktop/app-bureautique.nix
+++ b/desktop/app-bureautique.nix
@@ -35,9 +35,9 @@ mkIf profiles.isDesktop {
     graphviz      # dot, neato : traçage de graphes (carré, rond)
     jekyll        # générateur statique de site web
     pandoc
-    #texLiveFull   # distribution LaTeX
-    texLive       # distribution LaTeX de base
-    texLiveBeamer # paquets et extensions pour Beamer
-    texLiveModerncv # paquets pour la classe Modern CV
+    texLiveFull   # distribution LaTeX
+    #texLive       # distribution LaTeX de base
+    #texLiveBeamer # paquets et extensions pour Beamer
+    #texLiveModerncv # paquets pour la classe Modern CV
   ];
 }
diff --git a/desktop/app-cartographie.nix b/desktop/app-cartographie.nix
index a1d7191..3b2e525 100644
--- a/desktop/app-cartographie.nix
+++ b/desktop/app-cartographie.nix
@@ -11,6 +11,8 @@ mkIf profiles.isDesktop {
 
   environment.systemPackages = with pkgs; [
     # Gestion de données géographiques
+    expat         
+    gpsbabel      # pour convettir les données des GPS
     josm          # outil de contribution à OpenStreetMap
     qgis          # client lourd de manipulation de données géographiques
     viking        # analyse de topo, gestion de données GPS
diff --git a/logiciel-custom/osm2pgsql.nix b/logiciel-custom/osm2pgsql.nix
new file mode 100644
index 0000000..8e001bf
--- /dev/null
+++ b/logiciel-custom/osm2pgsql.nix
@@ -0,0 +1,40 @@
+{ stdenv, fetchurl
+, boost
+, bzip2
+, cmake
+, expat
+, geos
+, lua
+, postgresql
+, proj
+, zlib
+}
+
+stdenv.mkDerivation rec {
+  #version = "0.87.1";
+  version = "0.90.1";
+  name = "osm2pgsql-${version}-0";
+
+  src = fetchurl {
+    url = "https://github.com/openstreetmap/osm2pgsql/archive/${version}.tar.gz";
+    sha256 = "0i0zg8di8nbh96qnyyr156ikwcsq1w9b2291bazm5whb351flmqx";
+    };
+
+    #nativeBuildInputs = [ ];
+    buildInputs = [ ];
+
+    #preConfigure = ''
+    '';
+    #buildPhase = ''jam "-j$NIX_BUILD_CORES" '';
+    #installPhase = ''
+    #'';
+
+    meta = with stdenv.lib; {
+      homepage = http://wiki.openstreetmap.org/wiki/Osm2pgsql;
+      description = "osm2pgsql is a tool for loading OpenStreetMap data into a PostgreSQL / PostGIS database suitable for applications like rendering into a map, geocoding with Nominatim, or general analysis.";
+      license = licenses.gpl2;
+      #maintainers = [ maintainers.phunehehe ];
+      maintainers = [ maintainers.jpierre03 ];
+    };
+  }
+