cardano-crypto should not be considered a cardano-sl package.

Author: angerman

cabal.project.freeze

@@ -61,7 +61,6 @@ constraints: Cabal ==2.2.0.1,
              fmt ==0.6,
              foldl ==1.4.5,
              formatting ==6.3.6,
-             foundation ==0.0.21,
              free ==5.0.2,
              generic-arbitrary ==0.1.0,
              generics-sop ==0.3.2.0,

lib.nix

@@ -45,7 +45,8 @@ let
   lib = pkgs.lib;
 in lib // (rec {
   inherit fetchNixPkgs importPkgs cleanSourceTree;
-  isCardanoSL = lib.hasPrefix "cardano-";
+  # cardano-crypto is not a cardano-sl package.
+  isCardanoSL = name: lib.hasPrefix "cardano-" name && !(name == "cardano-crypto");
   isBenchmark = args: !((args.isExecutable or false) || (args.isLibrary or true));
 
   # Insert this into builder scripts where programs require a UTF-8