update software versions to latest

default.nix

 # Reproductibility: pin a specific commit of nur-kapack repository
-# This one contains Batsim v4.10 and Simgrid v3.31
-{ kapack ? import (fetchTarball {
-    url = "https://github.com/oar-team/nur-kapack/archive/b3611a0e7aadd69ca961d14639e8470df19f8564.tar.gz";
-    sha256 = "sha256:0rjwq0csb1z79jakicl638xa8r1wwyf8vd8ymrpfa1waiw7vfpc5";
-  }) {}
+# This one contains Batsim v4.2 and Simgrid v3.34
+{ kapack ? import
+    (fetchTarball "https://github.com/oar-team/nur-kapack/archive/901a5b656f695f2c82d17c091a55db2318ed3f39.tar.gz")
+    # commit 02/08/23 "batsim: 4.2.0"
+  {}
 }:
 
 with kapack.pkgs;
@@ -12,18 +12,18 @@ let self = rec {
   # For my scheduler and user simulator (batmen), pin a specific git commit:
   batmen = kapack.batsched.overrideAttrs (attr: rec {
     name = "batmen";
-    version = "b63e95fad46962572b1f1d6db5bda979ca20dae0"; # commit "clean nix file and update README"
+    version = "222d7cd741cbec9d79512ffe4bef4278d9deece8"; # commit "refac: renonce->renounce to correct orthograph, #24. 'dm_user_renonce' now depracated" Oct 30 2023
     src = kapack.pkgs.fetchgit rec {
       url = "https://gitlab.irit.fr/sepia-pub/mael/batmen.git";
       rev = version;
-      sha256 = "1q2s1f68j4wd8vzzzirpjp7851l342hq6dvd9ky5g62zdps5mqlj";
+      sha256 = "sha256-ScxhAg7mr2FdMMdPDz39wqhc2cHi7rGpM8Y3cNtg3YE=";
     };
   });
 
   exp_env = mkShell rec {
     name = "exp_env";
     buildInputs = [
-      kapack.batsim-410   # data center simulator
+      kapack.batsim-420   # data center simulator
       batmen              # scheduler + user simulator
       kapack.batexpe      # tool to execute batsim instances
       kapack.evalys       # for data visualization