remove the checkPhase

flake.nix

@@ -13,7 +13,7 @@
           name = "bad-datalog";
           src = ./.;
 
-          buildInputs = [ pkgs.elmPackages.elm pkgs.elmPackages.elm-test ];
+          buildInputs = [ pkgs.elmPackages.elm ];
 
           buildPhase = pkgs.elmPackages.fetchElmDeps {
             elmPackages = import ./nix/elm-srcs.nix;
@@ -21,9 +21,6 @@
             registryDat = ./nix/registry.dat;
           };
 
-          doCheck = true;
-          checkPhase = "elm-test";
-
           # it's a little weird that elm2nix says it's fine to build in the install
           # phase, but who am I to judge?
           installPhase = ''