Bump required plutus-core version to 1.40

Author: t4ccer

cabal.project

@@ -16,7 +16,3 @@ tests: true
 
 -- Important! Without this, you will get very limited output from any tests.
 test-show-details: direct
-
-constraints:
-  , plutus-core == 1.7.0.0
-  , nothunks < 0.2

default.nix

@@ -2,12 +2,19 @@
 {
   perSystem = { simpleHaskellNix, self', pkgs, config, ... }:
     let
+      cardanoPackages = pkgs.fetchFromGitHub {
+        owner = "IntersectMBO";
+        repo = "cardano-haskell-packages";
+        rev = "3167b742cea332e1c978d8ecc69ef8d6bd0d6e19"; # branch: repo
+        hash = "sha256-oCObuK/TY71lL+vDiRT0/Hhrsq4GRC7n8kcKBeonoUk=";
+      };
+
       plutusTest = simpleHaskellNix.mkPackage {
         name = "plutus-test";
         src = ./.;
 
         externalRepositories = {
-          "https://input-output-hk.github.io/cardano-haskell-packages" = self.inputs.cardanoPackages;
+          "https://input-output-hk.github.io/cardano-haskell-packages" = cardanoPackages;
         };
       };
     in