mirror of
https://github.com/ryan4yin/nix-config.git
synced 2026-11-13 12:13:46 +01:00
130 lines
3.8 KiB
Nix
130 lines
3.8 KiB
Nix
{
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config,
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pkgs,
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agenix,
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mysecrets,
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myvars,
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...
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}:
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{
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imports = [
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agenix.darwinModules.default
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];
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# enable logs for debugging
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launchd.daemons."activate-agenix".serviceConfig = {
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StandardErrorPath = "/Library/Logs/org.nixos.activate-agenix.stderr.log";
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StandardOutPath = "/Library/Logs/org.nixos.activate-agenix.stdout.log";
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};
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environment.systemPackages = [
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agenix.packages."${pkgs.stdenv.hostPlatform.system}".default
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];
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# if you changed this key, you need to regenerate all encrypt files from the decrypt contents!
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age.identityPaths = [
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# Generate manually via `sudo ssh-keygen -A`
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"/etc/ssh/ssh_host_ed25519_key" # macOS, using the host key for decryption
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];
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age.secrets =
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let
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noaccess = {
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mode = "0000";
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owner = "root";
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};
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high_security = {
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mode = "0500";
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owner = "root";
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};
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user_readable = {
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mode = "0500";
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owner = myvars.username;
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};
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in
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{
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# ---------------------------------------------
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# No discretionary access; privileged root can still bypass file modes.
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# ---------------------------------------------
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# .age means the decrypted file is still encrypted by age(via a passphrase)
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"ryan4yin-gpg-subkeys.priv.age" = {
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file = "${mysecrets}/desktop/ryan4yin-gpg-subkeys-2024-01-27.priv.age.age";
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}
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// noaccess;
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# ---------------------------------------------
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# only root can read this file.
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# ---------------------------------------------
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"rclone.conf" = {
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file = "${mysecrets}/desktop/rclone.conf.age";
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}
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// high_security;
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"nix-access-tokens" = {
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file = "${mysecrets}/server/nix-access-tokens.age";
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}
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# access-token needs to be readable by the user running the `nix` command
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// user_readable;
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# ---------------------------------------------
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# user can read this file.
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# ---------------------------------------------
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"ssh-key-romantic" = {
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file = "${mysecrets}/desktop/ssh-key-romantic.age";
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}
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// user_readable;
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# work git identity, symlinked to ~/work/.gitconfig by home-manager
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"work-gitconfig" = {
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file = "${mysecrets}/desktop/work-gitconfig.age";
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}
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// user_readable;
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};
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# place secrets in /etc/
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# NOTE: this will fail for the first time. cause it's running before "activate-agenix"
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environment.etc = {
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"agenix/rclone.conf" = {
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source = config.age.secrets."rclone.conf".path;
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};
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"agenix/ssh-key-romantic" = {
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source = config.age.secrets."ssh-key-romantic".path;
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};
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"agenix/ryan4yin-gpg-subkeys.priv.age" = {
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source = config.age.secrets."ryan4yin-gpg-subkeys.priv.age".path;
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};
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# The following secrets are used by home-manager modules
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# But nix-darwin doesn't support environment.etc.<name>.mode
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# So we need to change its mode manually
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"agenix/work-gitconfig" = {
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source = config.age.secrets."work-gitconfig".path;
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};
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};
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# nix-darwin ignores environment.etc.<name>.mode/owner, and a blanket chown
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# makes the root-only secrets readable by the login user. Re-apply each
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# secret's declared policy instead.
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system.activationScripts.postActivation.text = ''
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if [ -d /etc/agenix ]; then
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${pkgs.coreutils}/bin/chown ${myvars.username} \
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/etc/agenix/ssh-key-romantic \
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/etc/agenix/work-gitconfig
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${pkgs.coreutils}/bin/chmod 0500 \
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/etc/agenix/ssh-key-romantic \
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/etc/agenix/work-gitconfig
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${pkgs.coreutils}/bin/chown root /etc/agenix/rclone.conf
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${pkgs.coreutils}/bin/chmod 0500 /etc/agenix/rclone.conf
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${pkgs.coreutils}/bin/chown root /etc/agenix/ryan4yin-gpg-subkeys.priv.age
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${pkgs.coreutils}/bin/chmod 0000 /etc/agenix/ryan4yin-gpg-subkeys.priv.age
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fi
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'';
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}
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