[nix] add nanomsg to nix pkgs

Also, fix ./start to use gargantext-settings.toml

nix/pkgs.nix

@@ -62,6 +62,7 @@ rec {
       pkgs.gmp
       pkgs.lapack
       pkgs.libxml2
+      pkgs.nanomsg
       pkgs.plfit
     ] ++ pkgs.lib.optionals pkgs.stdenv.cc.isClang [
       pkgs.llvmPackages.openmp

start

@@ -16,7 +16,7 @@ docker compose up -d
 echo "GarganText: docker for postgresql database [OK]"
 cd ../../
 echo "GarganText: gargantext-server with Nix and Cabal..."
-nix-shell --run "cabal run gargantext-server -- --ini gargantext.ini --run Prod +RTS > $LOGFILE 2>&1 & tail -F $LOGFILE"
+nix-shell --run "cabal run gargantext-server -- --toml gargantext-settings.toml --run Prod +RTS > $LOGFILE 2>&1 & tail -F $LOGFILE"
 echo "GarganText: gargantext-server with Nix and Cabal [OK]"
 echo "GarganText: project stopped."