Use of environment.sessionVariables.PATH interferes with system rebuild #472
Description
Bug description
Use of environment.sessionVariables to set PATH causes system reconfiguration to fail.
Maybe this isn't the right way to configure PATH any more and this isn't really a bug, but it's not listed in the configuration documentation.
To Reproduce
$ cat /etc/nixos/configuration.nix
{ lib, pkgs, config, modulesPath, ... }:
with lib;
{
imports = [
"${modulesPath}/profiles/minimal.nix"
<nixos-wsl/modules>
];
wsl = {
enable = true;
wslConf.automount.root = "/mnt";
defaultUser = "nixos";
startMenuLaunchers = true;
};
# Enable nix flakes
nix.package = pkgs.nixFlakes;
nix.extraOptions = ''
experimental-features = nix-command flakes
'';
system.stateVersion = "22.05";
environment.sessionVariables = rec {
HOME = "/mnt/c/users/alexca14";
PATH = ["${HOME}/bin"];
};
}
sudo nixos-rebuild switch
Logs
$ sudo nixos-rebuild switch
building Nix...
building the system configuration...
error: The option `environment.variables.PATH' is defined multiple times while it's expected to be unique.
Definition values:
- In `/nix/var/nix/profiles/per-user/root/channels/nixos-wsl/modules/systemd/native':
[
"$PATH"
]
- In `/nix/var/nix/profiles/per-user/root/channels/nixos/nixos/modules/config/shells-environment.nix': "/mnt/c/users/alexca14/bin"
Use `lib.mkForce value` or `lib.mkDefault value` to change the priority on any of these definitions.
(use '--show-trace' to show detailed location information)
WSL version
WSL version: 2.1.5.0
Kernel version: 5.15.146.1-2
WSLg version: 1.0.60
MSRDC version: 1.2.5105
Direct3D version: 1.611.1-81528511
DXCore version: 10.0.25131.1002-220531-1700.rs-onecore-base2-hyp
Windows version: 10.0.19045.4291
shasum -a 256 nixos-wsl.tar.gz
3893395087de58cc68ed1181ecf8cdaa06aac677c9665c2ff696901ab2096898