fishPlugins.fishtape_3: init at 3.0.1

Keeping fishtape 2.x and 3.x separate because they aren't compatible
with each other and are still both being used to test different packages.

pkgs/shells/fish/plugins/default.nix

···
 
   clownfish = callPackage ./clownfish.nix { };
 
+  # Fishtape 2.x and 3.x aren't compatible,
+  # but both versions are used in the tests of different other plugins.
   fishtape = callPackage ./fishtape.nix { };
+  fishtape_3 = callPackage ./fishtape_3.nix { };
 
   foreign-env = callPackage ./foreign-env { };
 

pkgs/shells/fish/plugins/fishtape_3.nix

···
+{ lib, buildFishPlugin, fetchFromGitHub }:
+
+buildFishPlugin rec {
+  pname = "fishtape";
+  version = "3.0.1";
+
+  src = fetchFromGitHub {
+    owner = "jorgebucaran";
+    repo = "fishtape";
+    rev = version;
+    sha256 = "072a3qbk1lpxw53bxp91drsffylx8fbywhss3x0jbnayn9m8i7aa";
+  };
+
+  checkFunctionDirs = [ "./functions" ]; # fishtape is introspective
+  checkPhase = ''
+    fishtape tests/*.fish
+  '';
+
+  meta = with lib; {
+    description = "100% pure-Fish test runner";
+    homepage = "https://github.com/jorgebucaran/fishtape";
+    license = licenses.mit;
+    maintainers = with maintainers; [ pacien ];
+  };
+}