Include the Cabal freeze file on the CI

Author: robbert-vdh

client-haskell/icepeak-client.nix

@@ -27,7 +27,9 @@ mkDerivation {
       src = lib.cleanSource ./.;
       filter = gitignoreFilter;
     };
-  in whitelistedSrc;
+    # Including the freeze file here will alert us if nixpkgs has been updated
+    # without also updating the freeze file for non-Nix builds
+  in whitelistedSrc // { "cabal.project.freeze" = ../cabal.project.freeze; };
 
   isLibrary = true;
   isExecutable = false;

server/icepeak.nix

@@ -32,7 +32,9 @@ mkDerivation {
       src = lib.cleanSource ./.;
       filter = gitignoreFilter;
     };
-  in whitelistedSrc;
+    # Including the freeze file here will alert us if nixpkgs has been updated
+    # without also updating the freeze file for non-Nix builds
+  in whitelistedSrc // { "cabal.project.freeze" = ../cabal.project.freeze; };
 
   isLibrary = false;
   isExecutable = true;