python3Packages.karton-dashboard: update substituteInPlace

pkgs/development/python-modules/karton-dashboard/default.nix

@@ -5,6 +5,7 @@
 , karton-core
 , mistune
 , prometheus-client
+, pythonOlder
 }:
 
 buildPythonPackage rec {
@@ -12,6 +13,8 @@ buildPythonPackage rec {
   version = "1.2.1";
   format = "setuptools";
 
+  disabled = pythonOlder "3.7";
+
   src = fetchFromGitHub {
     owner = "CERT-Polska";
     repo = pname;
@@ -29,7 +32,7 @@ buildPythonPackage rec {
   postPatch = ''
     substituteInPlace requirements.txt \
       --replace "Flask==1.1.1" "Flask" \
-      --replace "prometheus-client==0.10.0" "prometheus-client"
+      --replace "prometheus_client==0.11.0" "prometheus_client"
   '';
 
   # Project has no tests. pythonImportsCheck requires MinIO configuration