update nixpkgs

btcpayserver: 1.11.2 -> 1.11.4
clightning: 23.05.2 -> 23.08.1
hwi: 2.2.1 -> 2.3.1

Remove custom coincurve, since nixos-23.05 includes the latest version
of coincurve (18) that's required by pyln-proto.

Co-authored-by: Erik Arvstedt <erik.arvstedt@gmail.com>

pkgs/python-packages/specific-versions/service-identity_23_1/default.nix

@@ -0,0 +1,59 @@
+{ lib
+, attrs
+, buildPythonPackage
+, cryptography
+, fetchFromGitHub
+, hatch-fancy-pypi-readme
+, hatch-vcs
+, hatchling
+, idna
+, pyasn1
+, pyasn1-modules
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "service-identity";
+  version = "23.1.0";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.8";
+
+  src = fetchFromGitHub {
+    owner = "pyca";
+    repo = pname;
+    rev = "refs/tags/${version}";
+    hash = "sha256-PGDtsDgRwh7GuuM4OuExiy8L4i3Foo+OD0wMrndPkvo=";
+  };
+
+  nativeBuildInputs = [
+    hatch-fancy-pypi-readme
+    hatch-vcs
+    hatchling
+  ];
+
+  propagatedBuildInputs = [
+    attrs
+    cryptography
+    idna
+    pyasn1
+    pyasn1-modules
+  ];
+
+  nativeCheckInputs = [
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "service_identity"
+  ];
+
+  meta = with lib; {
+    description = "Service identity verification for pyOpenSSL";
+    homepage = "https://service-identity.readthedocs.io";
+    changelog = "https://github.com/pyca/service-identity/releases/tag/${version}";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}