diff --git a/default.nix b/default.nix
index 16e5ece..8c18e29 100644
--- a/default.nix
+++ b/default.nix
@@ -1,7 +1,7 @@
 # If called without explicitly setting the 'pkgs' arg, a pinned nixpkgs version is used by default.
 { pkgs ? import (fetchTarball {
-    url = "https://github.com/NixOS/nixpkgs/archive/22.11.tar.gz";
-    sha256 = "sha256:11w3wn2yjhaa5pv20gbfbirvjq6i3m7pqrq2msf0g7cv44vijwgw";
+    url = "https://github.com/NixOS/nixpkgs/archive/23.05.tar.gz";
+    sha256 = "sha256:10wn0l08j9lgqcw8177nh2ljrnxdrpri7bp0g7nvrsn9rkawvlbf";
   }) {}
 , debug ? false
 }:
diff --git a/flake.lock b/flake.lock
index cf87184..a3b88c3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1689068808,
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
         "type": "github"
       },
       "original": {
@@ -20,16 +20,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1669833724,
-        "narHash": "sha256-/HEZNyGbnQecrgJnfE8d0WC5c1xuPSD2LUpB6YXlg4c=",
+        "lastModified": 1685566663,
+        "narHash": "sha256-btHN1czJ6rzteeCuE/PNrdssqYD2nIA4w48miQAFloM=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "4d2b37a84fad1091b9de401eb450aae66f1a741e",
+        "rev": "4ecab3273592f27479a583fb6d975d4aba3486fe",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "22.11",
+        "ref": "23.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 07dcf6e..96cbd87 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = " My personal NUR repository";
   inputs = {
     flake-utils.url = "github:numtide/flake-utils";
-    nixpkgs.url = "github:nixos/nixpkgs?ref=22.11";
+    nixpkgs.url = "github:nixos/nixpkgs?ref=23.05";
   };
   outputs = { self, nixpkgs, flake-utils }:
     let
diff --git a/nur.nix b/nur.nix
index bde6c52..a082d40 100644
--- a/nur.nix
+++ b/nur.nix
@@ -35,8 +35,6 @@ rec {
 
   batexpe = pkgs.callPackage ./pkgs/batexpe { };
 
-  batprotocol-cpp = pkgs.callPackage ./pkgs/batprotocol/cpp.nix { inherit flatbuffers debug; };
-
   batsim-410 = pkgs.callPackage ./pkgs/batsim/batsim410.nix { inherit redox debug; simgrid = simgrid-332light; intervalset = intervalsetlight; };
   batsim = batsim-410;
   batsim-docker = pkgs.callPackage ./pkgs/batsim/batsim-docker.nix { inherit batsim; };
@@ -67,14 +65,12 @@ rec {
 
   ear =  pkgs.callPackage ./pkgs/ear { };
 
-  enoslib = pkgs.callPackage ./pkgs/enoslib { inherit execo ring iotlabsshcli distem python-grid5000; };
+  enoslib = pkgs.callPackage ./pkgs/enoslib { inherit execo iotlabsshcli distem python-grid5000; };
 
   evalys = pkgs.callPackage ./pkgs/evalys { inherit procset; };
 
   execo = pkgs.callPackage ./pkgs/execo { };
 
-  flatbuffers = pkgs.callPackage ./pkgs/flatbuffers/2.0.nix { };
-
   flower = pkgs.callPackage ./pkgs/flower { inherit iterators; };
 
   iotlabcli = pkgs.callPackage ./pkgs/iotlabcli { };
@@ -135,8 +131,6 @@ rec {
 
   oar3 = oar;
 
-  ring = pkgs.callPackage ./pkgs/ring { inherit wirerope; };
-
   simgrid-327 = pkgs.callPackage ./pkgs/simgrid/simgrid327.nix { inherit debug; };
   simgrid-328 = pkgs.callPackage ./pkgs/simgrid/simgrid328.nix { inherit debug; };
   simgrid-329 = pkgs.callPackage ./pkgs/simgrid/simgrid329.nix { inherit debug; };
diff --git a/pkgs/batprotocol/cpp.nix b/pkgs/batprotocol/cpp.nix
deleted file mode 100644
index 0f2eea8..0000000
--- a/pkgs/batprotocol/cpp.nix
+++ /dev/null
@@ -1,35 +0,0 @@
-{ stdenv, lib, fetchgit
-, meson, ninja, pkgconfig
-, flatbuffers
-, debug ? false
-}:
-
-stdenv.mkDerivation rec {
-  name = "batprotocol-cpp-${src.rev}";
-
-  src = fetchgit {
-    url = "https://framagit.org/batsim/batprotocol.git";
-    rev = "baff452b365d471fc7316e1f5ab5ed6a9b5de460";
-    sha256 = "0n566w68y11m1s82wq1wf9fgyx5q7xri9nmgn6xr75hr9kpafawr";
-  };
-
-  nativeBuildInputs = [ meson ninja pkgconfig ];
-  propagatedBuildInputs = [ flatbuffers ];
-
-  preConfigure = "cd cpp";
-  ninjaFlags = [ "-v" ];
-
-  mesonBuildType = if debug then "debug" else "release";
-  CXXFLAGS = if debug then "-O0" else "";
-  hardeningDisable = if debug then [ "fortify" ] else [];
-  dontStrip = debug;
-
-  meta = with lib; {
-    description = "C++ library to serialize messages in the batprotocol";
-    longDescription = "C++ library to serialize messages in the batprotocol.";
-    homepage = https://framagit.org/batsim/batprotocol;
-    platforms = platforms.all;
-    license = licenses.lgpl3;
-    broken = false;
-  };
-}
diff --git a/pkgs/enoslib/default.nix b/pkgs/enoslib/default.nix
index 1f02a56..785f54f 100644
--- a/pkgs/enoslib/default.nix
+++ b/pkgs/enoslib/default.nix
@@ -1,18 +1,24 @@
-{ python3Packages, fetchFromGitLab, execo, ansible, ring, iotlabsshcli, distem, python-grid5000 }:
+{ python3Packages, fetchFromGitLab, execo, ansible, iotlabsshcli, distem, python-grid5000 }:
 
 python3Packages.buildPythonPackage rec {
   pname = "enoslib";
-  version = "v8.1.3";
+  version = "v8.1.4";
   src = fetchFromGitLab {
     domain = "gitlab.inria.fr";
     owner = "discovery";
     repo = pname;
     rev = "${version}";
-    sha256 = "sha256-QopX4YyYef9YkWmlm1wLg7DcXWUCpG+bdE3LxN7udtk=";
+    sha256 = "sha256-hGDneTQUexCBmZhnmZyIIeIlM87IzGCrIWWjC7plXk4=";
   };
+
   # We do the following because nix cannot yet access the extra builds of poetry
   patchPhase = ''
+    substituteInPlace setup.cfg --replace "importlib_resources>=5,<6" ""
+    substituteInPlace setup.cfg --replace "importlib_metadata>=6,<7" ""
     substituteInPlace setup.cfg --replace "rich[jupyter]~=12.0.0" "rich>=12.0.0"
+    substituteInPlace setup.cfg --replace "packaging~=21.3" "packaging>=21.3"
+    substituteInPlace setup.cfg --replace "pytz~=2022.1" "pytz>=2022.1"
+    substituteInPlace setup.cfg --replace "ansible>=2.9,<7.2" "ansible>=2.9"
   '';
   propagatedBuildInputs = [
     python3Packages.cryptography
@@ -22,12 +28,13 @@ python3Packages.buildPythonPackage rec {
     python3Packages.ipywidgets
     python3Packages.rich
     python3Packages.jsonschema
+    python3Packages.packaging
+    python3Packages.pytz
 
     ansible
 
     distem
     iotlabsshcli
-    ring
     execo
     python-grid5000
   ];
diff --git a/pkgs/flatbuffers/2.0.nix b/pkgs/flatbuffers/2.0.nix
deleted file mode 100644
index 2b907e7..0000000
--- a/pkgs/flatbuffers/2.0.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{ callPackage }:
-
-callPackage ./generic.nix {
-  version = "2.0.0";
-  sha256 = "1zbf6bdpps8369r1ql00irxrp58jnalycc8jcapb8iqg654vlfz8";
-}
diff --git a/pkgs/flatbuffers/generic.nix b/pkgs/flatbuffers/generic.nix
deleted file mode 100644
index 1cdfb4b..0000000
--- a/pkgs/flatbuffers/generic.nix
+++ /dev/null
@@ -1,46 +0,0 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, cmake
-, version
-, sha256
-, patches ? [ ]
-, preConfigure ? null
-}:
-
-stdenv.mkDerivation rec {
-  pname = "flatbuffers";
-  inherit version;
-
-  src = fetchFromGitHub {
-    owner = "google";
-    repo = "flatbuffers";
-    rev = "v${version}";
-    inherit sha256;
-  };
-
-  inherit patches preConfigure;
-
-  nativeBuildInputs = [ cmake ];
-
-  cmakeFlags = [
-    "-DFLATBUFFERS_BUILD_TESTS=${if doCheck then "ON" else "OFF"}"
-  ];
-
-  doCheck = stdenv.hostPlatform == stdenv.buildPlatform;
-  checkTarget = "test";
-
-  meta = with lib; {
-    description = "Memory Efficient Serialization Library";
-    longDescription = ''
-      FlatBuffers is an efficient cross platform serialization library for
-      games and other memory constrained apps. It allows you to directly
-      access serialized data without unpacking/parsing it first, while still
-      having great forwards/backwards compatibility.
-    '';
-    maintainers = [ maintainers.teh ];
-    license = licenses.asl20;
-    platforms = platforms.unix;
-    homepage = "https://google.github.io/flatbuffers/";
-  };
-}
diff --git a/pkgs/flower/default.nix b/pkgs/flower/default.nix
index 6dd338b..fe53d36 100644
--- a/pkgs/flower/default.nix
+++ b/pkgs/flower/default.nix
@@ -15,7 +15,7 @@ python3Packages.buildPythonPackage rec {
     ./0001-loosen-protobuf-version-requirement.patch
   ];
 
-  nativeBuildInputs = [ python3Packages.poetry ];
+  nativeBuildInputs = [ python3Packages.poetry-core ];
   propagatedBuildInputs = with python3Packages; [
     numpy
     protobuf
diff --git a/pkgs/nxc/cluster.nix b/pkgs/nxc/cluster.nix
index b311b30..eeeaa2b 100644
--- a/pkgs/nxc/cluster.nix
+++ b/pkgs/nxc/cluster.nix
@@ -14,8 +14,9 @@ python3Packages.buildPythonPackage rec {
   };
   patches = [ ./0001-bs-loosen-tomlkit-dep-version-constraint.patch ];
 
-  buildInputs = with python3Packages; [
+  buildInputs = [
     poetry
+    python3Packages.poetry-core
   ];
   propagatedBuildInputs = with python3Packages; [
     halo
diff --git a/pkgs/oar/default.nix b/pkgs/oar/default.nix
index 4a46604..dc62e98 100644
--- a/pkgs/oar/default.nix
+++ b/pkgs/oar/default.nix
@@ -13,7 +13,10 @@ python3Packages.buildPythonPackage rec {
   };
   patches = [ ./0001-bs-loosen-pyzmq-version-constraint.patch ];
 
-  nativeBuildInputs = [ poetry ];
+  nativeBuildInputs = [
+    poetry
+    python3Packages.poetry-core
+  ];
 
   propagatedBuildInputs = with python3Packages; [
     pyzmq
@@ -45,7 +48,7 @@ python3Packages.buildPythonPackage rec {
   '';
 
   meta = {
-    broken = false;
+    broken = true;
     homepage = "https://github.com/oar-team/oar3";
     description = "OAR: a Versatile Resource and Job Manager";
     license = lib.licenses.lgpl21;
diff --git a/pkgs/oxidisched/default.nix b/pkgs/oxidisched/default.nix
index 0f3dddb..29347d3 100644
--- a/pkgs/oxidisched/default.nix
+++ b/pkgs/oxidisched/default.nix
@@ -19,6 +19,6 @@ rustPlatform.buildRustPackage rec {
     homepage = https://gitlab.inria.fr/batsim/oxidisched;
     description = "Batsim-compatible schedulers mostly meant to test Batsim. Written in Rust.";
     license = licenses.lgpl3;
-    broken = false;
+    broken = true;
   };
 }
diff --git a/pkgs/pybatsim/core400.nix b/pkgs/pybatsim/core400.nix
index 6c50d25..a0e06c8 100644
--- a/pkgs/pybatsim/core400.nix
+++ b/pkgs/pybatsim/core400.nix
@@ -1,4 +1,4 @@
-{ lib, python3Packages, poetry, procset, callPackage }:
+{ lib, python3Packages, procset, callPackage }:
 
 python3Packages.buildPythonPackage rec {
   pname = "pybatsim-core";
@@ -10,7 +10,7 @@ python3Packages.buildPythonPackage rec {
   src = "${pybatsim-src}/${pname}";
 
   buildInputs = with python3Packages; [
-    poetry
+    poetry-core
   ];
   propagatedBuildInputs = with python3Packages; [
     docopt
diff --git a/pkgs/pybatsim/functional400.nix b/pkgs/pybatsim/functional400.nix
index 87e6828..a8ae949 100644
--- a/pkgs/pybatsim/functional400.nix
+++ b/pkgs/pybatsim/functional400.nix
@@ -1,4 +1,4 @@
-{ lib, python3Packages, poetry, pybatsim-core, callPackage }:
+{ lib, python3Packages, pybatsim-core, callPackage }:
 
 python3Packages.buildPythonPackage rec {
   pname = "pybatsim-functional";
@@ -10,7 +10,7 @@ python3Packages.buildPythonPackage rec {
   src = "${pybatsim-src}/${pname}";
 
   buildInputs = with python3Packages; [
-    poetry
+    poetry-core
   ];
   propagatedBuildInputs = with python3Packages; [
     pybatsim-core
diff --git a/pkgs/pybatsim/pybatsim321.nix b/pkgs/pybatsim/pybatsim321.nix
index 0746435..3449add 100644
--- a/pkgs/pybatsim/pybatsim321.nix
+++ b/pkgs/pybatsim/pybatsim321.nix
@@ -1,4 +1,4 @@
-{ lib, python3Packages, poetry, procset }:
+{ lib, python3Packages, procset }:
 
 python3Packages.buildPythonPackage rec {
   pname = "pybatsim";
@@ -12,7 +12,7 @@ python3Packages.buildPythonPackage rec {
   patches = [ ./321-0001-bs-loosen-pyzmq-version-constraint.patch ];
 
   buildInputs = with python3Packages; [
-    poetry
+    poetry-core
   ];
   propagatedBuildInputs = with python3Packages; [
     docopt
diff --git a/pkgs/ring/default.nix b/pkgs/ring/default.nix
deleted file mode 100644
index 2df4a80..0000000
--- a/pkgs/ring/default.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ python3Packages, fetchFromGitHub, wirerope }:
-
-python3Packages.buildPythonPackage rec {
-  name = "ring";
-  version = "0.9.1";
-  src = fetchFromGitHub {
-    owner = "youknowone";
-    repo = name;
-    rev = "8e4eb90b13d6480e50c63266e041e491c7c41dfe";
-    sha256 = "sha256-VmNXfntVFlXmvx9OjZ0VuIlHY5CPS3N+MJlL8YkrKcw=";
-  };
-  propagatedBuildInputs = with python3Packages; [
-    attrs
-    wirerope
-  ];
-  doCheck = false;
-}
diff --git a/pkgs/scylladb-cpp-driver/default.nix b/pkgs/scylladb-cpp-driver/default.nix
index f77ed93..2438748 100644
--- a/pkgs/scylladb-cpp-driver/default.nix
+++ b/pkgs/scylladb-cpp-driver/default.nix
@@ -19,5 +19,6 @@ stdenv.mkDerivation rec {
     description = "DataStax C/C++ Driver for Apache Cassandra® and DataStax Products";
     license = licenses.asl20;
     platforms = platforms.linux;
+    broken = true;
   };
 }