expliot: relax pymodbus constraint

- switch to pythonRelaxDepsHook

pkgs/tools/security/expliot/default.nix

@@ -30,6 +30,19 @@ buildPythonApplication rec {
     hash = "sha256-7Cuj3YKKwDxP2KKueJR9ZO5Bduv+lw0Y87Rw4b0jbGY=";
   };
 
+  pythonRelaxDeps = [
+    "pymodbus"
+    "pynetdicom"
+    "cryptography"
+    "python-can"
+    "pyparsing"
+    "zeroconf"
+  ];
+
+  nativeBuildInputs = [
+    pythonRelaxDepsHook
+  ];
+
   propagatedBuildInputs = [
     aiocoap
     awsiotpythonsdk
@@ -49,16 +62,6 @@ buildPythonApplication rec {
     zeroconf
   ];
 
-  postPatch = ''
-    # https://gitlab.com/expliot_framework/expliot/-/merge_requests/113
-    substituteInPlace setup.py \
-      --replace "pynetdicom>=1.5.1,<2" "pynetdicom>=2,<3" \
-      --replace "cryptography>=3.0,<4" "cryptography>=35,<40" \
-      --replace "python-can>=3.3.3,<4" "python-can>=3.3.3,<5" \
-      --replace "pyparsing>=2.4.7,<3" "pyparsing>=2.4.7,<4" \
-      --replace "zeroconf>=0.30,<0.40" "zeroconf"
-  '';
-
   # Project has no tests
   doCheck = false;