diff --git a/morph/bootstrap-configuration.nix b/morph/bootstrap-configuration.nix
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+#
+# This is a bare-bones configuration that can be edited slightly and then
+# dropped on a 100TB machine that is being crossgraded to NixOS. It is
+# tailored to the specific hardware choices made for our machines at 100TB and
+# 100TB's network configuration. The goal is to configure a system *enough*
+# that a better tool (eg morph) can take over.
+#
+# 1. Customize the variables below this comment.
+#
+# 2. Overwrite /etc/nixos/configuration.nix on Debian machine that has had
+# NixOS installed on top of it.
+#
+# 3. Copy the generated /etc/nixos/hardware-configuration.nix from the Debian
+# machine and add it to this repository. We need it to build the system
+# later.
+#
+# 4. Finish the NixOS install and reboot into a pristine NixOS system.
+#
+# 5. Specify the real configuration for this system and deploy it with morph.
+#
+let
+ # Make all these correct. Some default values from a random system left in
+ # place as examples.
+
+ # You can probably find this interface using `ip addr` on the target system
+ # while it's still running Debian. Pick the interface that has the public
+ # address assigned.
+ interface = "eno1";
+
+ # You probably just know what the public address is. Make sure this agrees
+ # with what you see in `ip addr` though.
+ publicIPv4 = "69.36.183.24";
+
+ # You'll find this on the address in the `ip addr` output. eg:
+ #
+ # 3: wlp4s0: ...
+ # ...
+ # inet 69.36.183.24/24 ...
+ # ^^ See?
+ #
+ prefixLength = 24;
+
+ # This is the default gateway address. You can find it with `ip route` on
+ # the target system.
+ gateway = "69.36.183.1";
+
+ # And the gateway itself is reachable on a particular interface. Most
+ # likely the same as the interface above but I don't know if this is
+ # guaranteed. Look at the `ip route` output to be sure.
+ gatewayInterface = "eno1";
+
+ # The unique disk identifier where grub should be installed. This should
+ # probably be sda. You can find this value by looking for the
+ # wwn-... symlink to sda in /dev/disk/by-id/. For example:
+ #
+ # $ ls -l /dev/disk/by-id/
+ # lrwxrwxrwx 1 root root 9 Aug 29 08:09 wwn-0x5002538d414bf195 -> ../../sda
+ #
+ # Be sure to pick the disk identifier and not the identifier of one of the
+ # partitions!
+ grubDeviceID = "wwn-0x5000c500936410b9";
+
+ # This is whatever ssh public key is appropriate at the time. I'm leaving
+ # mine here for now.
+ rootPublicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIN4GenAY/YLGuf1WoMXyyVa3S9i4JLQ0AG+pt7nvcLlQ exarkun@baryon";
+
+ # Stop! I hope you're done when you get here. If you have to modify
+ # anything below this point the expression should probably be refactored and
+ # another variable added controlling whatever new thing you need to control.
+ # Open an issue: https://github.com/PrivateStorageio/PrivateStorageio/issues/new
+in
+# Define a function that ignores all its arguments. We don't need any of them
+# for now.
+{ ... }:
+{
+ # Load the hardware configuration for this host. This is generated by
+ # nixos-generate-config on the target host. There is no such file checked
+ # in to the repository because it necessarily varies from host to host. For
+ # example, it includes the disk id of the root partition. We just rely on
+ # the tool to generate the correct configuration and then we load it from
+ # here.
+ imports =
+ [ # Include the results of the hardware scan.
+ ./hardware-configuration.nix
+ ];
+
+ # Configure the bootloader how we like.
+ boot.loader.timeout = 1;
+ boot.loader.grub.enable = true;
+ boot.loader.grub.version = 2;
+ boot.loader.grub.device = "/dev/disk/by-id/${grubDeviceID}";
+
+ # Let me in to do subsequent configuration. This makes the machine wide
+ # open. We might consider locking this down a bit more. For example, we
+ # should only need SSH access for the next step. However, there's basically
+ # nothing else on the system right now so it's not an extreme risk to just
+ # turn off the firewall. Initially this was the approach to make sure I
+ # wouldn't get locked out of a system working perfectly well but with an
+ # overly restrictive firewall (since that case basically makes the machine a
+ # brick to me).
+ networking.firewall.enable = false;
+
+ # Also, turn on the OpenSSH server so I (morph, really) can log in and make
+ # further changes.
+ services.openssh.enable = true;
+
+ # Grant root access to the holder of the configured key. We don't bother
+ # setting a password because keys are better. We also don't configure any
+ # additional users because that will happen later.
+ users.users.root.openssh.authorizedKeys.keys = [
+ rootPublicKey
+ ];
+
+ # Provide the static network configuration. 100TB doesn't use DHCP so turn
+ # off our client.
+ networking.dhcpcd.enable = false;
+
+ # Put the configured address on the configured interface.
+ networking.interfaces = {
+ "${interface}".ipv4.addresses = [
+ { address = publicIPv4; inherit prefixLength; }
+ ];
+ };
+ # And set up the configured route as the default.
+ networking.defaultGateway = {
+ address = gateway;
+ interface = gatewayInterface;
+ };
+ # I don't know if 100TB provides nameservers but these are pretty safe in
+ # general. This may not be strictly required to get the NixOS install
+ # bootable but a lot of tools have a dependency on being able to resolve
+ # names (for example, the Nix system configuration tool).
+ networking.nameservers = [
+ "4.2.2.1"
+ "8.8.8.8"
+ ];
+
+ # This value determines the NixOS release with which your system is to be
+ # compatible, in order to avoid breaking some software such as database
+ # servers. You should change this only after NixOS release notes say you
+ # should.
+ system.stateVersion = "19.03"; # Did you read the comment?
+}