Add support for taskfile tool

Fixes: #119

codecov.yml

@@ -0,0 +1,4 @@
+---
+codecov:
+  require_ci_to_pass: true
+comment: false

pyproject.toml

@@ -55,6 +55,7 @@ pypackage = "mk.tools.py_package:PyPackageTool"
 pytest = "mk.tools.pytest:PyTestTool"
 pre-commit = "mk.tools.pre_commit:PreCommitTool"
 shell = "mk.tools.shell:ShellTool"
+taskfile = "mk.tools.taskfile:TaskfileTool"
 tox = "mk.tools.tox:ToxTool"
 
 [tool.black]

src/mk/tools/taskfile.py

@@ -0,0 +1,62 @@
+import json
+import logging
+import os
+import shutil
+import sys
+from typing import List, Optional
+
+from mk.exec import run_or_fail
+from mk.tools import Action, Tool
+
+
+class TaskfileTool(Tool):
+    name = "taskfile"
+
+    def __init__(self, path=".") -> None:
+        """Initialize."""
+        super().__init__(path)
+        self.executable = ""
+
+    def is_present(self, path: str) -> bool:
+        if os.path.isfile(os.path.join(path, "taskfile.yml")):
+            # On some Linux distros might be exposed as taskfile in order to
+            # avoid clashing with the other Task Warrior executable https://taskwarrior.org/
+            self.executable = shutil.which("taskfile") or shutil.which("task")
+            if not self.executable:
+                logging.error(
+                    "taskfile.yml config found but the tool is not installed. See https://taskfile.dev/installation/"
+                )
+                sys.exit(1)
+            return True
+        return False
+
+    def actions(self) -> List[Action]:
+        actions: List[Action] = []
+        tasks_json = (
+            run_or_fail(
+                ["task", "--list", "--json"],
+                tee=False,
+            ).stdout
+            or ""
+        )
+        for task in json.loads(tasks_json)["tasks"]:
+            desc = task["desc"]
+            if task["summary"]:
+                desc += "\n"
+                desc += task["summary"]
+            actions.append(
+                Action(
+                    name=task["name"],
+                    tool=self,
+                    description=desc,
+                    args=[task["name"]],
+                )
+            )
+        return actions
+
+    def run(self, action: Optional[Action] = None) -> None:
+        if not action:
+            cmd = ["task"]
+        else:
+            cmd = ["task", action.name]
+        run_or_fail(cmd, tee=True)