diff --git a/default.nix b/default.nix
index c4790e46fe3..a0d66564306 100644
--- a/default.nix
+++ b/default.nix
@@ -132,10 +132,12 @@ let
     walletIntegrationTests = pkgs.callPackage ./scripts/test/wallet/integration { inherit gitrev; };
     validateJson = pkgs.callPackage ./tools/src/validate-json {};
     demoCluster = pkgs.callPackage ./scripts/launch/demo-cluster { inherit gitrev; };
-    tests = {
-      shellcheck = pkgs.callPackage ./scripts/test/shellcheck.nix { src = ./.; };
-      hlint = pkgs.callPackage ./scripts/test/hlint.nix { src = ./.; };
-      stylishHaskell = pkgs.callPackage ./scripts/test/stylish.nix { src = ./.; stylish-haskell = cardanoPkgs.stylish-haskell; };
+    tests = let
+      src = localLib.cleanSourceTree ./.;
+    in {
+      shellcheck = pkgs.callPackage ./scripts/test/shellcheck.nix { inherit src; };
+      hlint = pkgs.callPackage ./scripts/test/hlint.nix { inherit src; };
+      stylishHaskell = pkgs.callPackage ./scripts/test/stylish.nix { inherit (cardanoPkgs) stylish-haskell; inherit src; };
       buildWalletIntegration = pkgs.callPackage ./scripts/test/wallet/integration/build-test.nix { inherit walletIntegrationTests pkgs; };
       swaggerSchemaValidation = pkgs.callPackage ./scripts/test/wallet/swaggerSchemaValidation.nix { inherit gitrev; };
     };
diff --git a/scripts/test/hlint.nix b/scripts/test/hlint.nix
index 8e9e6e533dc..cc0be9ca0f0 100644
--- a/scripts/test/hlint.nix
+++ b/scripts/test/hlint.nix
@@ -1,13 +1,16 @@
 { runCommand, hlint, src, lib }:
 
 let
-  cleanSourceFilter = with lib;
+  # just haskell sources and the hlint config file
+  src' = lib.cleanSourceWith {
+   inherit src;
+   filter = with lib;
     name: type: let baseName = baseNameOf (toString name); in (
       (type == "regular" && hasSuffix ".hs" baseName) ||
       (type == "regular" && hasSuffix ".yaml" baseName) ||
       (type == "directory")
     );
-  src' = builtins.filterSource cleanSourceFilter src;
+  };
 in
 runCommand "cardano-hlint-check" { buildInputs = [ hlint ]; } ''
   set +e
diff --git a/scripts/test/shellcheck.nix b/scripts/test/shellcheck.nix
index bad29a79e78..7928d886cd7 100644
--- a/scripts/test/shellcheck.nix
+++ b/scripts/test/shellcheck.nix
@@ -1,12 +1,15 @@
 { runCommand, shellcheck, src, lib }:
 
 let
-  cleanSourceFilter = with lib;
+  # just the shell scripts
+  src' = lib.cleanSourceWith {
+   inherit src;
+   filter = with lib;
     name: type: let baseName = baseNameOf (toString name); in (
       (type == "regular" && hasSuffix ".sh" baseName) ||
       (type == "directory")
     );
-  src' = builtins.filterSource cleanSourceFilter src;
+  };
 in
 runCommand "iohk-ops-shellcheck" { buildInputs = [ shellcheck ]; } ''
 EXIT_STATUS=0
diff --git a/scripts/test/stylish.nix b/scripts/test/stylish.nix
index 4f5dcfed518..533b5c7ab2c 100644
--- a/scripts/test/stylish.nix
+++ b/scripts/test/stylish.nix
@@ -1,13 +1,16 @@
 { runCommand, stylish-haskell, src, lib, git }:
 
 let
-  cleanSourceFilter = with lib;
+  # just haskell sources and the stylish-haskell config file
+  src' = lib.cleanSourceWith {
+   inherit src;
+   filter = with lib;
     name: type: let baseName = baseNameOf (toString name); in (
       (type == "regular" && hasSuffix ".hs" baseName) ||
       (type == "regular" && hasSuffix ".yaml" baseName) ||
       (type == "directory")
     );
-  src' = builtins.filterSource cleanSourceFilter src;
+  };
 in
 runCommand "cardano-stylish-check" { succeedOnFailure = true; buildInputs = [ stylish-haskell git ]; } ''
   set +e
@@ -16,7 +19,7 @@ runCommand "cardano-stylish-check" { succeedOnFailure = true; buildInputs = [ st
   cd tmp-cardano
   git init
   git add -A
-  find . -type f -name "*hs" -not -path '.git' -not -path '*.stack-work*' -not -name 'HLint.hs' -exec stylish-haskell -i {} \;
+  find . -type f -name "*hs" -not -name 'HLint.hs' -exec stylish-haskell -i {} \;
   git diff --exit-code
   EXIT_CODE=$?
   if [[ $EXIT_CODE != 0 ]]