Multi-Language Projects

If your repository contains components in more than one language, run nolapse once per component with the appropriate --lang flag. Each component gets its own baseline and nolapse.yaml.

Supported Languages

Language	`--lang` value	Status
Go	`go` (default)	Supported
Python	`python`	Supported
Node.js	`nodejs`	Planned
Java	`java`	Planned
.NET	`dotnet`	Planned

Example: Go + Python in One Repo

my-repo/
├── services/
│   ├── go-svc/        ← Go HTTP service
│   └── py-svc/        ← Python FastAPI service
└── .github/
    └── workflows/
        └── coverage.yml

Initialise each component

nolapse init --repo services/go-svc
nolapse init --repo services/py-svc --lang python

Run checks individually

# Go component
nolapse run --repo services/go-svc

# Python component
nolapse run --repo services/py-svc --lang python

GitHub Actions — Multi-Job Workflow

Use separate jobs (not matrix) when each language requires different setup steps:

name: Coverage check

on:
  pull_request:

jobs:
  coverage-go:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.22"

      - name: Run nolapse (Go)
        uses: nolapse/nolapse-action@v1
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          repo: services/go-svc
          lang: go
          warn-threshold: "0.5"
          fail-threshold: "1.0"

  coverage-python:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install dependencies
        run: pip install -r services/py-svc/requirements.txt pytest pytest-cov

      - name: Run nolapse (Python)
        uses: nolapse/nolapse-action@v1
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          repo: services/py-svc
          lang: python
          warn-threshold: "0.5"
          fail-threshold: "1.0"

The two jobs run in parallel. Each one reports its own check status to GitHub, and branch protection can require both to pass.

Language Detection

If lang is set in a component’s nolapse.yaml, you do not need to pass --lang on the command line:

lang: python
warn_threshold: 0.5
fail_threshold: 1.0

With this in place, nolapse run --repo services/py-svc automatically uses the Python runner.

Independent Thresholds per Language

Go services and Python services often have different coverage baselines due to generated code, boilerplate, and test tooling differences. Set thresholds independently in each component’s nolapse.yaml:

lang: go
warn_threshold: 0.5
fail_threshold: 1.0

lang: python
warn_threshold: 1.0
fail_threshold: 2.0