646b892680
Some checks failed
Periodic Merges (6h) / master → staging-nixos (push) Failing after 12m50s
Periodic Merges (6h) / master → staging-next (push) Failing after 12m54s
Periodic Merges (24h) / merge-base(master,staging) → haskell-updates (push) Failing after 11m54s
Periodic Merges (6h) / staging-next → staging (push) Failing after 12m13s
Periodic Merges (24h) / staging-next-25.05 → staging-25.05 (push) Failing after 13m24s
Periodic Merges (24h) / release-25.05 → staging-next-25.05 (push) Failing after 14m28s
52 lines
1.1 KiB
Nix
52 lines
1.1 KiB
Nix
{
|
|
config,
|
|
lib,
|
|
pkgs,
|
|
...
|
|
}:
|
|
let
|
|
cfg = config.hardware.i2c;
|
|
in
|
|
|
|
{
|
|
options.hardware.i2c = {
|
|
enable = lib.mkEnableOption ''
|
|
i2c devices support. By default access is granted to users in the "i2c"
|
|
group (will be created if non-existent) and any user with a seat, meaning
|
|
logged on the computer locally
|
|
'';
|
|
|
|
group = lib.mkOption {
|
|
type = lib.types.str;
|
|
default = "i2c";
|
|
description = ''
|
|
Grant access to i2c devices (/dev/i2c-*) to users in this group.
|
|
'';
|
|
};
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
|
|
boot.kernelModules = [ "i2c-dev" ];
|
|
|
|
users.groups = lib.mkIf (cfg.group == "i2c") {
|
|
i2c = { };
|
|
};
|
|
|
|
services.udev.packages = lib.singleton (
|
|
pkgs.writeTextFile {
|
|
name = "i2c-udev-rules";
|
|
text = ''
|
|
# allow group ${cfg.group} and users with a seat use of i2c devices
|
|
ACTION=="add", KERNEL=="i2c-[0-9]*", TAG+="uaccess", GROUP="${cfg.group}", MODE="660"
|
|
'';
|
|
destination = "/etc/udev/rules.d/70-i2c.rules";
|
|
}
|
|
);
|
|
|
|
};
|
|
|
|
meta.maintainers = [ lib.maintainers.rnhmjoj ];
|
|
|
|
}
|