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|
# This module sets up a development VM which I use for developing Linux stuff
# on this Darwin host.
{
lib,
pkgs,
flakeInputs,
flakeOutputs,
metadata,
...
}: let
workingDirectory = "/var/lib/dev-vm";
# Port 22 on the guest is forwarded to this port on the host.
port = 31023;
guest-system = import "${pkgs.path}/nixos" {
configuration = {
imports = [
{
_module.args = {
hostPkgs = pkgs;
hostPort = port;
inherit workingDirectory flakeInputs flakeOutputs metadata;
};
}
flakeInputs.home-manager.nixosModules.home-manager
flakeInputs.agenix.nixosModules.default
./configuration/configuration.nix
];
};
system = builtins.replaceStrings ["darwin"] ["linux"] pkgs.stdenv.hostPlatform.system;
};
in {
system.activationScripts.preActivation.text = ''
mkdir -p ${lib.escapeShellArg workingDirectory}
'';
launchd.agents.dev-vm = {
script = ''
# create-builder uses TMPDIR to share files with the builder, notably certs.
# macOS will clean up files in /tmp automatically that haven't been accessed in 3+ days.
# If we let it use /tmp, leaving the computer asleep for 3 days makes the certs vanish.
# So we'll use /run/org.nixos.dev-vm instead and clean it up ourselves.
export TMPDIR=/run/org.nixos.dev-vm
export USE_TMPDIR=1
rm -rf "$TMPDIR"
mkdir -p "$TMPDIR"
trap 'rm -rf "$TMPDIR"' EXIT
${guest-system.config.system.build.macos-vm-installer}/bin/create-builder
'';
serviceConfig = {
KeepAlive = true;
RunAtLoad = true;
WorkingDirectory = workingDirectory;
};
};
environment.etc."ssh/ssh_config.d/100-dev-vm.conf".text = ''
Host ${guest-system.config.networking.hostName}
User linus # Also hardcoded in `configuration.nix`.
Hostname localhost
Port ${toString port}
IdentityFile ${./keys/ssh_vmhost_ed25519_key}
'';
}
|
