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@bradfitz bradfitz commented Dec 3, 2025

Description

People wanting to use GitHub-hosted Windows runners with a gomodfs NFS server need the Windows NFS client, but that takes 3 minutes to install in every run.

This pre-installs it, to save each build 3 minutes later.

Related issue:

Check list

  • Related issue / work item is attached
  • Tests are written (if applicable)
  • Documentation is updated (if applicable)
  • Changes are tested and related VM images are successfully generated

People wanting to use GitHub-hosted Windows runners with a
[gomodfs](https://github.com/tailscale/gomodfs/) NFS server need
the Windows NFS client, but that takes 3 minutes to install
in every run.

This pre-installs it, to save each build 3 minutes later.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Copilot AI review requested due to automatic review settings December 3, 2025 22:22
Copilot finished reviewing on behalf of bradfitz December 3, 2025 22:24
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Pull request overview

This PR adds the Windows NFS-Client feature to all three Windows Server runner images (2019, 2022, and 2025) to avoid the 3-minute installation overhead in each workflow run when users need NFS functionality for scenarios like using gomodfs NFS servers.

Key Changes

  • Adds NFS-Client to the windowsFeatures array in toolset-2019.json, toolset-2022.json, and toolset-2025.json
  • Uses "includeAllSubFeatures": true flag consistent with other Windows Server features
  • Pre-installs the feature during image build time, eliminating runtime installation delays

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File Description
images/windows/toolsets/toolset-2025.json Adds NFS-Client feature with includeAllSubFeatures flag to Windows Server 2025 configuration
images/windows/toolsets/toolset-2022.json Adds NFS-Client feature with includeAllSubFeatures flag to Windows Server 2022 configuration
images/windows/toolsets/toolset-2019.json Adds NFS-Client feature with includeAllSubFeatures flag to Windows Server 2019 configuration

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