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labrador: init at 0-unstable-2026-01-05#477199

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randomizedcoder wants to merge 1 commit intoNixOS:masterfrom
randomizedcoder:Labrador
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labrador: init at 0-unstable-2026-01-05#477199
randomizedcoder wants to merge 1 commit intoNixOS:masterfrom
randomizedcoder:Labrador

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@randomizedcoder randomizedcoder commented Jan 5, 2026

Summary

Add EspoTek Labrador - an open-source USB device that turns your PC into a full-featured electronics lab bench with oscilloscope, signal generator, logic analyzer, and multimeter functionality.

This package builds the Qt5 desktop application for interfacing with the Labrador hardware.

Features

  • Cross-platform: Supports Linux (x86_64, aarch64, i686, armv7l) and macOS (Darwin)
  • Firmware updates: Includes bundled libdfuprog library
  • Complete installation: Firmware files, waveforms, icons, and desktop file

udev rules (Linux)

For non-root USB access, users need to add udev rules. On NixOS:

services.udev.extraRules = ''
  ENV{ID_VENDOR_ID}=="03eb", ENV{ID_MODEL_ID}=="ba94", MODE="0666"
  ENV{ID_VENDOR_ID}=="03eb", ENV{ID_MODEL_ID}=="a000", MODE="0666"
  ENV{ID_VENDOR_ID}=="03eb", ENV{ID_MODEL_ID}=="2fe4", MODE="0666"
'';

Build verification

$ nix-build -A labrador
/nix/store/...-labrador-0-unstable-2026-01-05

$ ls result/bin/
labrador

$ ldd result/bin/.labrador-wrapped | grep -E "(Qt|fftw|usb)"
libfftw3_omp.so.3 => /nix/store/...-fftw-double-3.3.10/lib/libfftw3_omp.so.3
libusb-1.0.so.0 => /nix/store/...-libusb-1.0.29/lib/libusb-1.0.so.0
libfftw3.so.3 => /nix/store/...-fftw-double-3.3.10/lib/libfftw3.so.3
libQt5PrintSupport.so.5 => /nix/store/...-qtbase-5.15.18/lib/libQt5PrintSupport.so.5
libQt5Widgets.so.5 => /nix/store/...-qtbase-5.15.18/lib/libQt5Widgets.so.5
libQt5Gui.so.5 => /nix/store/...-qtbase-5.15.18/lib/libQt5Gui.so.5
libQt5Core.so.5 => /nix/store/...-qtbase-5.15.18/lib/libQt5Core.so.5

Application launches successfully and scans for USB device (expected "DEVICE NOT FOUND" without hardware connected).

Things done

  • Built on platform:
    • x86_64-linux
    • aarch64-linux
    • x86_64-darwin
    • aarch64-darwin
  • Tested, as applicable:
  • Nixpkgs Release Notes
    • Package update: when the change is major or breaking.
  • NixOS Release Notes
    • Module addition: when adding a new NixOS module.
    • Module update: when the change is significant.
  • Fits CONTRIBUTING.md, pkgs/README.md, maintainers/README.md and other READMEs.

@randomizedcoder randomizedcoder mentioned this pull request Jan 5, 2026
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@nixpkgs-ci nixpkgs-ci bot added 10.rebuild-linux: 1-10 This PR causes between 1 and 10 packages to rebuild on Linux. 10.rebuild-darwin: 1-10 This PR causes between 1 and 10 packages to rebuild on Darwin. 10.rebuild-darwin: 1 This PR causes 1 package to rebuild on Darwin. 10.rebuild-linux: 1 This PR causes 1 package to rebuild on Linux. 9.needs: reviewer This PR currently has no reviewers requested and needs attention. labels Jan 5, 2026
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nixos-discourse commented Jan 5, 2026

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review/3032/6238

SuperSandro2000
SuperSandro2000 reviewed Jan 6, 2026
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pkgs/by-name/la/labrador/package.nix
'';
homepage = "https://github.com/espotek-org/Labrador";
license = lib.licenses.gpl3Only;
# maintainers = with lib.maintainers; [ randomizedcoder ];
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Suggested change
# maintainers = with lib.maintainers; [ randomizedcoder ];
maintainers = with lib.maintainers; [ randomizedcoder ];

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@randomizedcoder randomizedcoder Jan 6, 2026

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Sorry, my github name hasn't landed in https://github.com/NixOS/nixpkgs/blob/master/maintainers/maintainer-list.nix yet. Once it does, I can add this line. ( Speaking of which, this maintainer-list.nix is very large. I wonder if it should be split by subdirs "aa" ... ? )

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Just add yourself to that list. I don't think there are currently plans to split that file.

@nixpkgs-ci nixpkgs-ci bot removed the 9.needs: reviewer This PR currently has no reviewers requested and needs attention. label Jan 6, 2026
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randomizedcoder commented Jan 6, 2026

@SuperSandro2000 Thanks for the review. - In general, if I want to document how a package.nix is setup, and why, what's the best way please? Could I make a README.md in the folder? The reason I ask is that I'm working on packaging Performance Co Pilot ( https://github.com/performancecopilot/pcp ) and it's a bit of a nightmare. Anyone coming back to look in a couple of months will be very confused.

@nixpkgs-ci nixpkgs-ci bot added the 8.has: package (new) This PR adds a new package label Jan 27, 2026
@randomizedcoder
labrador: init at 0-unstable-2026-02-16
e14b0c1 
Add EspoTek Labrador - an open-source USB device that turns your PC into
a full-featured electronics lab bench with oscilloscope, signal generator,
logic analyzer, and multimeter functionality.

This package builds the Qt5 desktop application for interfacing with
the Labrador hardware.

Features:
- Cross-platform: Supports Linux (x86_64, aarch64, i686, armv7l) and macOS
- Includes bundled libdfuprog library for firmware updates
- Includes udev rules for non-root USB access on Linux
@randomizedcoder
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randomizedcoder commented Feb 17, 2026

Good idea about the udev rule. Updated, and fixed the commits (doh!)

Labrador now also has flake.nix
espotek-org/Labrador#393

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nixos-discourse commented Feb 18, 2026

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review/3032/6430

@SuperSandro2000
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SuperSandro2000 commented Feb 20, 2026

@SuperSandro2000 Thanks for the review. - In general, if I want to document how a package.nix is setup, and why, what's the best way please? Could I make a README.md in the folder? The reason I ask is that I'm working on packaging Performance Co Pilot ( performancecopilot/pcp ) and it's a bit of a nightmare. Anyone coming back to look in a couple of months will be very confused.

I would add comments to key lines that are not very intuitive and raise questions.

SuperSandro2000
SuperSandro2000 reviewed Feb 20, 2026
View reviewed changes
pkgs/by-name/la/labrador/package.nix
'';
homepage = "https://github.com/espotek-org/Labrador";
license = lib.licenses.gpl3Only;
# maintainers = with lib.maintainers; [ randomizedcoder ];
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@SuperSandro2000 SuperSandro2000 Feb 20, 2026

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Suggested change
# maintainers = with lib.maintainers; [ randomizedcoder ];
maintainers = with lib.maintainers; [ randomizedcoder ];

other bits are looking good

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randomizedcoder commented Feb 20, 2026

@SuperSandro2000

Thanks again.

I made the mistake of including randomizedcoder maintainer into this PR, which I just fixed up
#473609

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randomizedcoder commented Feb 20, 2026

@SuperSandro2000
I'm really wondering about making a bit of automation, maybe with a local LLM to do the nixpkgs code reviews

... And I also think we need some commit hooks for run nix fmt - I assume this has come up before, so I'm not sure why it didn't make progress

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8.has: package (new) This PR adds a new package 10.rebuild-darwin: 1-10 This PR causes between 1 and 10 packages to rebuild on Darwin. 10.rebuild-darwin: 1 This PR causes 1 package to rebuild on Darwin. 10.rebuild-linux: 1-10 This PR causes between 1 and 10 packages to rebuild on Linux. 10.rebuild-linux: 1 This PR causes 1 package to rebuild on Linux.

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