fish: declare tests from nixosTests

Changed files
+2 -1
pkgs
shells
+2 -1
pkgs/shells/fish/default.nix
···
, fetchpatch
, writeText
-
+
, nixosTests
, useOperatingSystemEtc ? true
}:
···
passthru = {
shellPath = "/bin/fish";
+
tests.nixos = nixosTests.fish;
};
};