136 lines
4.2 KiB
Nix
136 lines
4.2 KiB
Nix
{ config, pkgs, lib, sane-lib, ... }:
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# installer docs: https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/profiles/installation-device.nix
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with lib;
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let
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cfg = config.sane.guest;
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fs = sane-lib.fs;
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in
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{
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options = {
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sane.guest.enable = mkOption {
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default = false;
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type = types.bool;
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};
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};
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config = {
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# Users are exactly these specified here;
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# old ones will be deleted (from /etc/passwd, etc) upon upgrade.
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users.mutableUsers = false;
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# docs: https://nixpkgs-manual-sphinx-markedown-example.netlify.app/generated/options-db.xml.html#users-users
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users.users.colin = {
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# sets group to "users" (?)
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isNormalUser = true;
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home = "/home/colin";
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createHome = true;
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homeMode = "0700";
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# i don't get exactly what this is, but nixos defaults to this non-deterministically
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# in /var/lib/nixos/auto-subuid-map and i don't want that.
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subUidRanges = [
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{ startUid=100000; count=1; }
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];
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group = "users";
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extraGroups = [
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"wheel"
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"nixbuild"
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"networkmanager"
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# phosh/mobile. XXX colin: unsure if necessary
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"video"
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"feedbackd"
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"dialout" # required for modem access
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];
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# initial password is empty, in case anything goes wrong.
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# if `colin-passwd` (a password hash) is successfully found/decrypted, that becomes the password at boot.
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initialPassword = lib.mkDefault "";
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passwordFile = lib.mkIf (config.sops.secrets ? "colin-passwd") config.sops.secrets.colin-passwd.path;
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shell = pkgs.zsh;
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# mount encrypted stuff at login
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# some other nix pam users:
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# - <https://github.com/g00pix/nixconf/blob/32c04f6fa843fed97639dd3f09e157668d3eea1f/profiles/sshfs.nix>
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# - <https://github.com/lourkeur/distro/blob/11173454c6bb50f7ccab28cc2c757dca21446d1d/nixos/profiles/users/louis-full.nix>
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# - <https://github.com/dnr/sample-nix-code/blob/03494480c1fae550c033aa54fd96aeb3827761c5/nixos/laptop.nix>
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pamMount = let
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priv = config.fileSystems."/home/colin/private";
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in {
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fstype = priv.fsType;
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path = priv.device;
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mountpoint = priv.mountPoint;
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options = builtins.concatStringsSep "," priv.options;
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};
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};
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security.pam.mount.enable = true;
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sane.users.colin.default = true;
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# ensure ~ perms are known to sane.fs module.
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# TODO: this is generic enough to be lifted up into sane.fs itself.
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sane.fs."/home/colin".dir.acl = {
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user = "colin";
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group = config.users.users.colin.group;
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mode = config.users.users.colin.homeMode;
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};
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sane.user.persist.plaintext = [
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"archive"
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"dev"
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# TODO: records should be private
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"records"
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"ref"
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"tmp"
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"use"
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"Music"
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"Pictures"
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"Videos"
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".cache/nix"
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".cache/nix-index"
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".cargo"
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".rustup"
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];
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# convenience
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sane.user.fs."knowledge" = fs.wantedSymlinkTo "private/knowledge";
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sane.user.fs."nixos" = fs.wantedSymlinkTo "dev/nixos";
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sane.user.fs."Videos/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Videos";
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sane.user.fs."Videos/servo-incomplete" = fs.wantedSymlinkTo "/mnt/servo-media/incomplete";
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sane.user.fs."Music/servo" = fs.wantedSymlinkTo "/mnt/servo-media/Music";
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# used by password managers, e.g. unix `pass`
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sane.user.fs.".password-store" = fs.wantedSymlinkTo "knowledge/secrets/accounts";
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sane.persist.sys.plaintext = mkIf cfg.enable [
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# intentionally allow other users to write to the guest folder
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{ directory = "/home/guest"; user = "guest"; group = "users"; mode = "0775"; }
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];
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users.users.guest = mkIf cfg.enable {
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isNormalUser = true;
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home = "/home/guest";
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subUidRanges = [
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{ startUid=200000; count=1; }
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];
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group = "users";
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initialPassword = lib.mkDefault "";
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shell = pkgs.zsh;
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openssh.authorizedKeys.keys = [
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# TODO: insert pubkeys that should be allowed in
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];
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};
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security.sudo = {
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enable = true;
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wheelNeedsPassword = false;
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};
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services.openssh = {
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enable = true;
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settings.PermitRootLogin = "no";
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settings.PasswordAuthentication = false;
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};
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};
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}
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