blob: 0aa496e74d602928dd8204f55373d999d521c03d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
{
pkgs,
lib,
inputs,
config,
...
}:
let
inherit (lib) mkDefault;
in
{
system.stateVersion = "24.05";
environment.systemPackages = with pkgs; [
vim
curl
dnsutils
gitMinimal
];
nixpkgs.config.allowUnfree = true;
nix = {
nixPath = [ ];
gc = {
automatic = true;
options = "--delete-older-than 7d";
};
registry = {
nixpkgs.to = {
owner = "nixos";
repo = "nixpkgs";
type = "github";
rev = inputs.nixpkgs.rev;
};
};
settings = {
# Improve nix store disk usage
auto-optimise-store = true;
# Prevents impurities in builds
sandbox = true;
experimental-features = [
"nix-command"
"flakes"
"ca-derivations"
];
flake-registry = "";
connect-timeout = 20;
log-lines = mkDefault 25;
max-free = mkDefault (3000 * 1024 * 1024);
min-free = mkDefault (512 * 1024 * 1024);
};
};
# Quieter logs
networking.firewall.logRefusedConnections = false;
# Unnecessary / nonsensical
systemd.services.NetworkManager-wait-online.enable = false;
systemd.network.wait-online.enable = false;
# Hardening
users = {
mutableUsers = false;
users.root.hashedPassword = "$y$j9T$5aHaSd9AkFijcpHRJk07q1$hxRPTrwvo3hZqFcOvNIam.iJ7jDR2ZAeZsTmQYphKpA";
};
boot.tmp.cleanOnBoot = true;
systemd.enableEmergencyMode = false;
# Perl is a default package
environment.defaultPackages = [ ];
# Things that pull in perl
programs.less.lessopen = mkDefault null;
boot.enableContainers = mkDefault false;
# Unnecessary programs/services
networking.firewall.enable = false;
system.disableInstallerTools = true;
documentation = {
enable = false;
nixos.enable = false;
man.enable = false;
};
environment.variables.BROWSER = "echo";
programs.vim.defaultEditor = true;
programs.command-not-found.enable = mkDefault false;
environment.stub-ld.enable = mkDefault false;
services.logrotate.enable = mkDefault false;
xdg.autostart.enable = mkDefault false;
xdg.icons.enable = mkDefault false;
xdg.mime.enable = mkDefault false;
xdg.sounds.enable = mkDefault false;
services.udisks2.enable = mkDefault false;
# use TCP BBR has significantly increased throughput and reduced latency for connections
boot.kernel.sysctl = {
"net.core.default_qdisc" = "fq";
"net.ipv4.tcp_congestion_control" = "bbr";
};
# Show package version changes on switch
system.activationScripts.diff = {
supportsDryActivation = true;
text = ''
if [[ -e /run/current-system ]]; then
echo "--- diff to current-system"
${pkgs.nvd}/bin/nvd --nix-bin-dir=${config.nix.package}/bin diff /run/current-system "$systemConfig"
echo "---"
fi
'';
};
# SSH
services.openssh = {
enable = true;
settings = {
X11Forwarding = false;
KbdInteractiveAuthentication = false;
PasswordAuthentication = true;
UseDns = false;
PermitRootLogin = "yes";
KexAlgorithms = [
"curve25519-sha256"
"curve25519-sha256@libssh.org"
"diffie-hellman-group16-sha512"
"diffie-hellman-group18-sha512"
"sntrup761x25519-sha512@openssh.com"
];
};
};
}
|
