flake: Add attribute to build static executable, make it the default package

flake.nix

@@ -35,6 +35,7 @@
       in rec {
         packages = {
           terraform-http-backend-pass = haskellPackages.terraform-http-backend-pass;
+          terraform-http-backend-pass-static = pkgs.haskell.lib.justStaticExecutables haskellPackages.terraform-http-backend-pass;
           dev-shell = haskellPackages.shellFor {
             packages = p: [p.terraform-http-backend-pass];
             buildInputs = [
@@ -46,7 +47,7 @@
             ];
           };
         };
-        defaultPackage = packages.terraform-http-backend-pass;
+        defaultPackage = packages.terraform-http-backend-pass-static;
         devShell = packages.dev-shell;
       });
 }