CODEWITHSUNDEEP
yamlgithub-actions
Raven
Raven

Reputation: 3516

GitHub Actions - You have an error in you YAML syntax

I have the following YAML specs for my action:

name: Build and test

on: [push, pull_request]

env:
  buildDir: ${{ github.workspace }}/build/

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-18.04, ubuntu-20.04, windows-2019, macos-10.15]
        include:
          - os: ubuntu-18.04
            triplet: x64-linux
          - os: ubuntu-20.04
            triplet: x64-linux
          - os: windows-2019
            triplet: x64-windows
          - os: macos-10.15
            triplet: x64-osx

    runs-on: ${{ matrix.os }}

  steps:
  - uses: actions/checkout@v2

I verified that this passes validation of https://yamlvalidator.com/. And yet GitHub is telling me there was an error in my YAML syntax at line 27 (last line). I tried various different indentations of that part but all yield the same result.
Furthermore I tried removing the matrix block above and also using 4 instead of 2 spaces to indent everything but these changes also were unable to resolve the error.

I have absolutely no clue what is going on here. Any hints would be appreciated.

Upvotes: 0

Views: 2130

Answers (1)

Raven
Raven

Reputation: 3516

As jonsharpe has mentioned in the comments the issue was not a YAML syntax error (as the error message indicated) but a semantic error of the specifics for GitHub actions: The steps block was not indented far enough.

Here's the corrected version:

on: [push, pull_request]

env:
  buildDir: ${{ github.workspace }}/build/

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-18.04, ubuntu-20.04, windows-2019, macos-10.15]
        include:
          - os: ubuntu-18.04
            triplet: x64-linux
          - os: ubuntu-20.04
            triplet: x64-linux
          - os: windows-2019
            triplet: x64-windows
          - os: macos-10.15
            triplet: x64-osx

    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v2

Upvotes: 2

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