mirror of
https://github.com/NixOS/nixos-hardware
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87 lines
3.3 KiB
Markdown
87 lines
3.3 KiB
Markdown
This config is for [Librem 13v3](https://puri.sm/products/librem-13/) and [15v3](https://puri.sm/products/librem-15/) Laptops from Purism.
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Librem comes with Coreboot + SeaBIOS payload. That means EFI boot is not
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possible. Use `fdisk` to partition hard drive, and GRUB as a bootloader:
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```nix
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{
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boot.loader.grub = {
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enable = true;
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device = "/dev/sda";
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version = 2;
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};
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}
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```
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## Adding a PureOS partition to the GRUB menu
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I first assume that `boot.loader.grub.useOSProber = true;` should be sufficient.
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However GRUB was not able to identify the disks correctly and it took me several
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reinstallation till setting `boot.loader.grub.fsIdentifier= "provided";` and using
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boot.loader.grub.extraEntries allowed me to dual boot NixOS and PureOS.
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Be aware that each time the PureOS updates the /boot/grub/grub.cfg you will be unable
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to boot into NixOS unless you patch grub.cfg manually again.
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Therefore: If you want to be able to boot into your old PureOS distribution
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add the following lines, assuming that you have a separate boot partition
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Adapt linux version and the UUID to your disk!!
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```nix
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{
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boot.loader.grub.useOSProber = false;
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boot.loader.grub.fsIdentifier= "provided";
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boot.loader.grub.extraEntries = ''
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menuentry "PureOS with linux 4.19.0-5-amd64 on /dev/sdb2 " {
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insmod gzio
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if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
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insmod part_msdos
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insmod ext2
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set root='hd0,msdos1'
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if [ x$feature_platform_search_hint = xy ]; then
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search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 ef7a4dcf-8cc4-4870-b860-3ed64906f9b9
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else
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search --no-floppy --fs-uuid --set=root ef7a4dcf-8cc4-4870-b860-3ed64906f9b9
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fi
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linux /vmlinuz-4.19.0-5-amd64 root=UUID=43899f26-04f2-4ccb-b52a-c9441f1a1a6d ro quiet splash resume=UUID=923317f8-d8bb-4e1f-bca3-f36a556de609 # $vt_handoff
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initrd /initrd.img-4.19.0-5-amd64
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};
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}
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```
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## Automatically lock the desktop when removing the librem key
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The [instructions](https://docs.puri.sm/Librem_Key/Getting_Started/User_Manual.html#automatically-lock-the-desktop-when-removing-the-librem-key) to lock the screen after unplugging the [Librem Key](https://puri.sm/products/librem-key/#overview) don't work under NixOS.
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This snippet works on my Librem 15v3 laptop running KDE without wayland and is using the xlock from the package xlockmore.
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```nix
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{ pkgs, services , systemd, ... }:
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let
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libremScreenSaver = pkgs.writeScriptBin "libremScreenSaver" ''
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#!${pkgs.bash}/bin/bash
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user=`ps aux | egrep "start_kdeinit|gdm-(wayland|x)-session"| head -n 1 | awk '{print $1}'`
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if [ -n "$user" ]; then
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sudo -u $user DISPLAY=:0 xlock 2>&1 | logger lockScreen for user $user
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else
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logger libremScreenSaver failed to find a user. Not running KDE?
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fi
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'';
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in {
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services.udev.path = [ pkgs.procps pkgs.logger pkgs.gawk pkgs.xlockmore ];
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services.udev.extraRules = ''
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ACTION=="remove", ENV{PRODUCT}=="316d/4c4b/101" RUN+="${pkgs.systemd}/bin/systemctl --no-block start lockScreen@%k.service"
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'';
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systemd.services."lockScreen@" = {
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bindsTo = [ "dev-%i.device"] ;
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path = [ pkgs.procps pkgs.logger pkgs.sudo pkgs.xlockmore pkgs.gawk ] ;
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serviceConfig = {
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Type = "oneshot"; # was simple
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ExecStart = "${libremScreenSaver}/bin/libremScreenSaver %I";
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};
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};
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}
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```
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