fix README instructions (Adding troubleshooting section)

[guilherme-n-l]

No description provided.

[gemini-code-assist]

Hello @guilherme-n-l, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

Hello team, gemini-code-assist here to provide a summary of this pull request by @guilherme-n-l. This PR focuses on improving the documentation in the README.md file. The primary goal is to make the instructions for building the NixOS image clearer and to add a dedicated section for troubleshooting common issues that users might encounter during the build process. Specifically, it adds steps to ensure the build command is run from the correct directory and provides guidance on resolving memory and temporary space problems within the Lima VM environment.

Highlights

• Added Troubleshooting Section: Introduced a new 'Troubleshooting' section in the README to help users diagnose and fix common errors.
• Provided Solutions for Build Errors: Included specific troubleshooting steps and commands for resolving issues related to insufficient memory in the builder VM and lack of space in the /tmp directory within the Lima VM.

Changelog

• README.md
  • Added git clone and cd nixos-lima commands before the nix build command in the 'build image' section (Lines 15-16).
  • Added a new 'Troubleshooting' section (Line 32).
  • Added a subsection 'Errors while building image' (Line 34).
  • Included guidance and commands for insufficient memory in the builder VM (Lines 36-41).
  • Included guidance and commands for insufficient space in the /tmp directory inside the lima VM (Lines 43-48).

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[gemini-code-assist]

Code Review

This pull request significantly improves the README by adding crucial setup steps (cloning the repository before building) and a very helpful troubleshooting section. These changes will undoubtedly make it easier for users to get started and resolve common issues. I have a couple of suggestions to further enhance the clarity and correctness of the new instructions.

Summary of Findings

• Clarity of Lima VM Configuration Path: The placeholder for the Lima VM configuration path (<PATH_TO_VM_CONFIG>/<FILE>.yaml) could be more specific to help users easily locate their configuration file. Suggested providing a more common path structure and how to find the VM instance name.
• Missing sudo for mount command: The mount command in the troubleshooting section for increasing /tmp size is missing sudo, which is required for its execution. This could lead to the command failing for users.
• Temporary nature of /tmp remount (low severity - not commented): The mount -o remount command for /tmp provides a temporary solution for increasing its size; the change will be lost on reboot. While not a critical issue, mentioning this or suggesting a more permanent solution (if one is simple and common for Lima VMs) could be beneficial for users. (This was not added as a direct comment due to review settings for severity.)

Merge Readiness

This pull request adds valuable information to the README. However, there's a high-severity issue (missing sudo for the mount command) and a medium-severity clarity improvement (Lima VM config path) that should be addressed before merging. Once these changes are made, the PR will be in a much better state. As a reviewer, I am not authorized to approve pull requests, but I recommend addressing the identified issues. Other reviewers should then perform a final check.