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Add Nix to CI #36

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Nov 27, 2024
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63 changes: 63 additions & 0 deletions .github/workflows/nix.yml
Original file line number Diff line number Diff line change
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name: Test Nix

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🟠 Code Vulnerability

No explicit permissions set for at the workflow level (...read more)

Datadog’s GitHub organization defines default permissions for the GITHUB_TOKEN to be restricted (contents:read, metadata:read, and packages:read).

Your repository may require a different setup, so consider defining permissions for each job following the least privilege principle to restrict the impact of a possible compromise.

You can find the list of all possible permissions in Workflow syntax for GitHub Actions - GitHub Docs. They can be defined at the job or the workflow level.

View in Datadog  Leave us feedback  Documentation


on:
push:
branches:
- "**"

jobs:
test:
strategy:
fail-fast: false
matrix:
platform:
- os: darwin
cpu: x86_64
base: macos-13 # always x86_64-darwin
nix-installer:
platform: x86_64-darwin
- os: darwin
cpu: arm64
base: macos-14 # always arm64-darwin
nix-installer:
platform: aarch64-darwin
- os: linux
cpu: x86_64
base: ubuntu-24.04 # always x86_64-linux-gnu
nix-installer:
platform: x86_64-linux
- os: linux
cpu: aarch64
base: arm-4core-linux-ubuntu24.04 # always aarch64-linux-gnu
nix-installer:
platform: aarch64-linux

name: Test Nix (${{ matrix.platform.cpu }}-${{ matrix.platform.os }})
runs-on: ${{ matrix.platform.base }}

permissions:
contents: read
id-token: write

steps:
- name: Check CPU arch
run: |
test "$(uname -m)" = "${{ matrix.platform.cpu }}"
- uses: actions/checkout@v4

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🟠 Code Vulnerability

Workflow depends on a GitHub actions pinned by tag (...read more)

When using a third party action, one needs to provide its GitHub path (owner/project) and can eventually pin it to a Git ref (a branch name, a Git tag, or a commit hash).

No pinned Git ref means the action uses the latest commit of the default branch each time it runs, eventually running newer versions of the code that were not audited by Datadog. Specifying a Git tag is better, but since they are not immutable, using a full length hash is recommended to make sure the action content is actually frozen to some reviewed state.

Be careful however, as even pinning an action by hash can be circumvented by attackers still. For instance, if an action relies on a Docker image which is itself not pinned to a digest, it becomes possible to alter its behaviour through the Docker image without actually changing its hash. You can learn more about this kind of attacks in Unpinnable Actions: How Malicious Code Can Sneak into Your GitHub Actions Workflows. Pinning actions by hash is still a good first line of defense against supply chain attacks.

Additionally, pinning by hash or tag means the action won’t benefit from newer version updates if any, including eventual security patches. Make sure to regularly check if newer versions for an action you use are available. For actions coming from a very trustworthy source, it can make sense to use a laxer pinning policy to benefit from updates as soon as possible.

View in Datadog  Leave us feedback  Documentation

with:
persist-credentials: false
- uses: DeterminateSystems/nix-installer-action@e50d5f73bfe71c2dd0aa4218de8f4afa59f8f81d
with:
source-url: https://github.com/DeterminateSystems/nix-installer/releases/download/v0.30.0/nix-installer-${{ matrix.platform.nix-installer.platform }}
- uses: DeterminateSystems/magic-nix-cache-action@87b14cf437d03d37989d87f0fa5ce4f5dc1a330b
- name: Print Nix version
run: |
nix --version
- name: Print ruby version
run: |
nix develop --command which ruby
nix develop --command ruby --version
- name: Bundle install
run: nix develop --command bundle install
- name: Run tests
run: nix develop --command bundle exec rake docker:list