`node-version-file` should support absolute paths

[sidvishnoi]

Description:

If we pass a absolute path to node-version-file, for example, when using with Composite Actions, the resulting path is resolved incorrectly, due to a path.join() call.

setup-node/src/main.ts

Lines 96 to 100 in 5e21ff4

	if (versionFileInput) {
	const versionFilePath = path.join(
	process.env.GITHUB_WORKSPACE!,
	versionFileInput
	);

Action version:
v3

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

Repro steps:

1. In a composite action with .nvmrc, use following as input:

   node-version-file: ${{ github.action_path }}/.nvmrc

Example broken action run: https://github.com/sidvishnoi/mediasession/actions/runs/6158104300/job/16710218833?pr=1

Expected behavior:

If it can check whether provided node-version-file exists as is, or perhaps use path.resolve(), it won't break with absolute paths.

Actual behavior:

Error: The specified node version file at: /home/runner/work/mediasession/mediasession/home/runner/work/_actions/w3c/spec-prod/fix-nvmrc/.nvmrc does not exist
                                                                                      ^^^

[dmitry-shibanov]

Hello @sidvishnoi. Thank you for your report. We'll take a look on it.

[evandam]

Hi folks, I'm running into this issue as well, trying to use ${{ github.action_path }}/.tool-versions but it tries to append the path to the current directory.

It's a pretty frustrating and unexpected behavior as far as I can tell. Any hope to see a fix to this soon? 🙌

[scalp42]

Can confirm would be nice if it could be looked into. @w3c has a workaround here but less than ideal 🙏

[marknuzz]

@actions/setup-actions-team @HarithaVattikuti

Apologies for the pings, but it looks like Dmitry hasn't been active on this project in a long time, and this issue may have slipped through the cracks. It would be awesome if someone could take a look at this and any other issues that may have been buried.

[gowridurgad]

Hi @sidvishnoi, Thank you for your suggestion to support absolute paths in the node-version-file. Although we do not have any plans to add this feature at this time, we will consider it as a feature request for the future.
In the meantime, please use the following workarounds:

1. Use a script to determine the relative path of the action directory and pass it to the node-version-file input:

id: action_path
run: echo "action_path=$(node -p 'require("path").relative(process.env.GITHUB_WORKSPACE, "${{ github.action_path }}")')" >> $GITHUB_ENV
shell: bash
- name: Set up Node.js
uses: actions/setup-node@v4
with:
node-version-file: ${{ env.action_path }}/.nvmrc

This script calculates the relative path from the GitHub workspace to the action directory and sets it as the node-version-file, ensuring the path is resolved correctly within the repository context.
2. Set the node version directly in the action, bypassing the need for a version file.

I hope this clarifies the issue and provides a suitable workaround. If you have any further questions, please feel free to ask.

[gowridurgad]

Hi @sidvishnoi, Just a gentle reminder regarding this issue, If you have any updates or need further assistance, Please let us know.

[sidvishnoi]

@gowridurgad the workaround you shared above is what I created for W3C 😉

Further assistance would be not requiring this workaround.

[gowridurgad]

Hi @sidvishnoi, Here is an additional workaround you can use:
Use symbolic links:
Create a symbolic link: ln -s ${{ github.action_path }}/.nvmrc
Add the symbolic link creation step in your composite action before setting up Node.js. Here’s how you can update your composite action:

- name: Create symbolic link for .nvmrc
   run: ln -s ${{ github.action_path }}/.nvmrc
   shell: bash

 - name: Set up Node.js
   uses: actions/setup-node@v4  
   with:
     node-version-file: ./.nvmrc

This script will create a symbolic link from the root of your repository to the .nvmrc file in your action directory before setting up Node.js.
Let us know if this helps or if you have any further questions!

[gowridurgad]

Hi @sidvishnoi, Just a gentle reminder regarding this issue, If you have any updates or need further assistance, Please let us know.