Add ThinkPad T14 Intel Gen 6 support

[bashfulrobot]

Hardware Profile

Adds support for Lenovo ThinkPad T14 Intel Gen 6 with Intel Core Ultra processors (Lunar Lake architecture).

Changes

• CPU/GPU Support: Uses module for Intel Core Ultra 5/7 processors with Intel Arc integrated graphics
• Kernel Requirements: Ensures kernel 6.8+ for full Lunar Lake support
• Hardware Optimizations:
  • for ThinkPad brightness control
  • for touchpad click registration
  • Disables service for modern Intel power management
• Module Structure: Added both base Intel T14 profile and Gen 6 specific profile
• Documentation: Updated README.md table and flake.nix entries

Hardware Tested

• Intel Core Ultra 7 268V processor
• Intel Arc Graphics 130V/140V
• All hardware functionality verified working
• Kernel 6.16.0 with xe driver loaded successfully

Feedback Requested

The kernel parameters and throttled service settings are marked with TODO comments as they're based on common ThinkPad patterns. Feedback from other T14 Gen 6 users would help validate these optimizations.

Test Plan

• Graphics acceleration working (Mesa Intel Graphics LNL)
• xe driver loading correctly
• Kernel 6.8+ requirement met
• Hardware detection functional
• Community testing of brightness keys
• Community testing of touchpad behavior
• Community validation of power management settings

[bashfulrobot]

I reviewed the error, and the component that the nix fmt is complaining about also does not exist in your current flake. Can I ignore that? Or if there is something I need to do. Please let me know. I am currently running this code from my repo on my laptop. Feel free to let me know if there is anything else you need. Appreciate your time.

 nix fmt ..                nixos-hardware on  master took 6m5s error: flake 'git+file:///home/dustin/dev/nix/nixos-hardware' does not provide attribute 'formatter.x86_64-linux'

Cheers.

[panchoh]

Hi!

Note that there is an issue with flake.lock not being synced with the actual flake.nix that we have, which I’m trying to address on #1570.

At any rate, I’d recommend removing flake.lock from the scope of this PR (to keep things orthogonal, that is).

Thanks!

[bashfulrobot]

I did end up removing the lock file previously. So that is taken care of. 👍

[panchoh]

Um, that doesn't fly, I'm afraid. If this PR gets accepted, the project as a whole will end up without the flake.lock file. We don't want that. What I propose is that you drop the edit to flake.lock altogether. The resulting PR should then contain no mention of flake.lock. And, when the previous fix is accepted by the project, this PR will have no conflicts as a bonus.

My suggestion would be that you rewrite the history of your PR, and when the changes to flake.lock are gone, then force-push to your branch. Let me know if you need and/or want assistance with this.

Hint: git rebase --interactive is your friend.

Thanks!

[panchoh]

I reviewed the error, and the component that the nix fmt is complaining about also does not exist in your current flake. Can I ignore that? Or if there is something I need to do. Please let me know. I am currently running this code from my repo on my laptop. Feel free to let me know if there is anything else you need. Appreciate your time.

 nix fmt ..                nixos-hardware on  master took 6m5s error: flake 'git+file:///home/dustin/dev/nix/nixos-hardware' does not provide attribute 'formatter.x86_64-linux'

Cheers.

(Sorry, I missed this comment before.)

The formatter has been recently moved (a7600ce) to the tests flake, so the GitHub Actions workflow enters the tests directory before running nix fmt:

nixos-hardware/.github/workflows/test.yml

Line 14 in 26ed7a0

- run: cd tests && nix fmt .. -- --fail-on-change

So, just run cd tests, and then run nix fmt .. -- --fail-on-change a couple of times until no errors are detected, and you are good to go. (Tecnically, the first pass will fix all the errors, but with the second pass, you get feedback that it won’t fail when run by the workflow.)

Hope that it helps!

Happy hacking,

[bashfulrobot]

I reviewed the error, and the component that the nix fmt is complaining about also does not exist in your current flake. Can I ignore that? Or if there is something I need to do. Please let me know. I am currently running this code from my repo on my laptop. Feel free to let me know if there is anything else you need. Appreciate your time.

 nix fmt ..                nixos-hardware on  master took 6m5s error: flake 'git+file:///home/dustin/dev/nix/nixos-hardware' does not provide attribute 'formatter.x86_64-linux'

Cheers.

(Sorry, I missed this comment before.)

The formatter has been recently moved (a7600ce) to the tests flake, so the GitHub Actions workflow enters the tests directory before running nix fmt:

nixos-hardware/.github/workflows/test.yml

Line 14 in 26ed7a0

- run: cd tests && nix fmt .. -- --fail-on-change

So, just run cd tests, and then run nix fmt .. -- --fail-on-change a couple of times until no errors are detected, and you are good to go. (Tecnically, the first pass will fix all the errors, but with the second pass, you get feedback that it won’t fail when run by the workflow.)

Hope that it helps!

Happy hacking,

Thanks for the tip! It ran clean locally after two runs. I have now committed that change as well.

[panchoh]

Thanks for the tip! It ran clean locally after two runs. I have now committed that change as well.

Glad to be of service!