os/profiles/core/default.nix

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Nix
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{ self, config, lib, pkgs, ... }:
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let inherit (lib) fileContents;
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in
{
# Sets nrdxp.cachix.org binary cache which just speeds up some builds
imports = [ ../cachix ];
# For rage encryption, all hosts need a ssh key pair
services.openssh = {
enable = true;
openFirewall = lib.mkDefault false;
};
# This is just a representation of the nix default
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nix.systemFeatures = [ "nixos-test" "benchmark" "big-parallel" "kvm" ];
environment = {
# Selection of sysadmin tools that can come in handy
systemPackages = with pkgs; [
binutils
coreutils
curl
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direnv
dnsutils
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dosfstools
fd
git
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bottom
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gptfdisk
iputils
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jq
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manix
moreutils
nix-index
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nmap
ripgrep
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skim
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tealdeer
usbutils
utillinux
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whois
];
# Starship is a fast and featureful shell prompt
# starship.toml has sane defaults that can be changed there
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shellInit = ''
export STARSHIP_CONFIG=${
pkgs.writeText "starship.toml"
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(fileContents ./starship.toml)
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}
'';
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shellAliases =
let ifSudo = lib.mkIf config.security.sudo.enable;
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in
{
# quick cd
".." = "cd ..";
"..." = "cd ../..";
"...." = "cd ../../..";
"....." = "cd ../../../..";
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# git
g = "git";
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# grep
grep = "rg";
gi = "grep -i";
# internet ip
myip = "dig +short myip.opendns.com @208.67.222.222 2>&1";
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# nix
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n = "nix";
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np = "n profile";
ni = "np install";
nr = "np remove";
ns = "n search --no-update-lock-file";
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nf = "n flake";
nepl = "n repl '<nixpkgs>'";
srch = "ns nixos";
orch = "ns override";
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nrb = ifSudo "sudo nixos-rebuild";
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mn = ''
manix "" | grep '^# ' | sed 's/^# \(.*\) (.*/\1/;s/ (.*//;s/^# //' | sk --preview="manix '{}'" | xargs manix
'';
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# fix nixos-option
nixos-option = "nixos-option -I nixpkgs=${self}/lib/compat";
# sudo
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s = ifSudo "sudo -E ";
si = ifSudo "sudo -i";
se = ifSudo "sudoedit";
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# top
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top = "btm";
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# systemd
ctl = "systemctl";
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stl = ifSudo "s systemctl";
utl = "systemctl --user";
ut = "systemctl --user start";
un = "systemctl --user stop";
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up = ifSudo "s systemctl start";
dn = ifSudo "s systemctl stop";
jtl = "journalctl";
};
};
fonts = {
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fonts = with pkgs; [ powerline-fonts dejavu_fonts ];
fontconfig.defaultFonts = {
monospace = [ "DejaVu Sans Mono for Powerline" ];
sansSerif = [ "DejaVu Sans" ];
};
};
nix = {
# Improve nix store disk usage
autoOptimiseStore = true;
gc.automatic = true;
optimise.automatic = true;
# Prevents impurities in builds
useSandbox = true;
# give root and @wheel special privileges with nix
trustedUsers = [ "root" "@wheel" ];
# Generally useful nix option defaults
extraOptions = ''
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min-free = 536870912
keep-outputs = true
keep-derivations = true
fallback = true
'';
};
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programs.bash = {
# Enable starship
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promptInit = ''
eval "$(${pkgs.starship}/bin/starship init bash)"
'';
# Enable direnv, a tool for managing shell environments
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interactiveShellInit = ''
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eval "$(${pkgs.direnv}/bin/direnv hook bash)"
'';
};
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# Service that makes Out of Memory Killer more effective
services.earlyoom.enable = true;
}