Show HN: Hm – a task runner with a Python DSL, growing into a CI/CD system(github.com)

  curl -fsSL https://get.harmont.dev/install.sh | sh
  
  mkdir foo
  cd foo
  uv init
  cat >> pyproject.toml <<EOF
  [dependency-groups]
  dev = [
    "pytest",
    "ruff",
    "ty",
  ]
  EOF
  
  # Create the pipeline
  mkdir .harmont
  cat > .harmont/pipeline.py <<EOF
  import harmont as hm
  from harmont.python import PythonToolchain
  
  @hm.target()
  def project() -> PythonToolchain:
      return hm.python(path=".")
  
  @hm.pipeline(
      "ci",
      default_image="ubuntu:24.04",
      triggers=[hm.push(branch="main")],
  )
  def ci(project: hm.Target[PythonToolchain]) -> tuple[hm.Step, ...]:
      return (
          project.test(),
          project.lint(),
          project.fmt(),
          project.typecheck(),
      )
  EOF
  
  hm run

  - COW filesystems: In a future release of hm, we mount FS layers on top of preceding layers, copy-on-write. I ran some experiments and they resulted in up to 40% faster runs on `uv run ruff`-style commands.
  - Development containers: `hm dev` enables you to spin up your application in however many instances you need -- if you have a local application, there is nothing stopping you from spinning it up once, twice, or 10 times.
  - The cloud: In parallel to the CLI, I've been working on the cloud, which I am hoping to private-access release in the coming month. It follows the same model as the CLI, but uses a very different execution engine (supporting RAM caches too, for you Bazel enjoyers =).
  - Additional language SDKs -- The private-access cloud is written in Haskell, Elixir and Rust. We already have harmont rules for Rust (which I would suggest you check out in Harmont's very own dogfood pipeline: https://github.com/harmont-dev/harmont-cli/blob/main/.harmont/ci.py), but we're adding more languages!
  - Plugin system: I recognize that not everyone will want to join the Harmont cloud but may find some utility in the Harmont task runner. At some point, I had a plugin system in place that allowed you to download and use harmont without any cloud-specific bloat, but unfortunately I tore that out, because the code wasn't great. Definitely working on bringing that back.