reduce scope of nixos documentation

There are so many ways to do this we realistically shouldn't bother
describing any of them, especially because people should be learning all
the options and choosing the one that suits them best anyway.
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Charles Hall 2024-03-21 15:25:34 -07:00
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- [Generic](deploying/generic.md)
- [Debian](deploying/debian.md)
- [Docker](deploying/docker.md)
- [Nix](deploying/nix.md)
- [NixOS](deploying/nixos.md)
- [TURN](turn.md)
- [Appservices](appservices.md)

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# Conduit for Nix/NixOS
This guide assumes you have a recent version of Nix (^2.4) installed.
Since Conduit ships as a Nix flake, you'll first need to [enable
flakes][enable_flakes].
You can now use the usual Nix commands to interact with Conduit's flake. For
example, `nix run gitlab:famedly/conduit` will run Conduit (though you'll need
to provide configuration and such manually as usual).
If your NixOS configuration is defined as a flake, you can depend on this flake
to provide a more up-to-date version than provided by `nixpkgs`. In your flake,
add the following to your `inputs`:
```nix
conduit = {
url = "gitlab:famedly/conduit";
# Assuming you have an input for nixpkgs called `nixpkgs`. If you experience
# build failures while using this, try commenting/deleting this line. This
# will probably also require you to always build from source.
inputs.nixpkgs.follows = "nixpkgs";
};
```
Next, make sure you're passing your flake inputs to the `specialArgs` argument
of `nixpkgs.lib.nixosSystem` [as explained here][specialargs]. This guide will
assume you've named the group `flake-inputs`.
Now you can configure Conduit and a reverse proxy for it. Add the following to
a new Nix file and include it in your configuration:
```nix
{ config
, pkgs
, flake-inputs
, ...
}:
let
# You'll need to edit these values
# The hostname that will appear in your user and room IDs
server_name = "example.com";
# The hostname that Conduit actually runs on
#
# This can be the same as `server_name` if you want. This is only necessary
# when Conduit is running on a different machine than the one hosting your
# root domain. This configuration also assumes this is all running on a single
# machine, some tweaks will need to be made if this is not the case.
matrix_hostname = "matrix.${server_name}";
# An admin email for TLS certificate notifications
admin_email = "admin@${server_name}";
# These ones you can leave alone
# Build a dervation that stores the content of `${server_name}/.well-known/matrix/server`
well_known_server = pkgs.writeText "well-known-matrix-server" ''
{
"m.server": "${matrix_hostname}"
}
'';
# Build a dervation that stores the content of `${server_name}/.well-known/matrix/client`
well_known_client = pkgs.writeText "well-known-matrix-client" ''
{
"m.homeserver": {
"base_url": "https://${matrix_hostname}"
}
}
'';
in
{
# Configure Conduit itself
services.matrix-conduit = {
enable = true;
# This causes NixOS to use the flake defined in this repository instead of
# the build of Conduit built into nixpkgs.
package = flake-inputs.conduit.packages.${pkgs.system}.default;
settings.global = {
inherit server_name;
};
};
# Configure automated TLS acquisition/renewal
security.acme = {
acceptTerms = true;
defaults = {
email = admin_email;
};
};
# ACME data must be readable by the NGINX user
users.users.nginx.extraGroups = [
"acme"
];
# Configure NGINX as a reverse proxy
services.nginx = {
enable = true;
recommendedProxySettings = true;
virtualHosts = {
"${matrix_hostname}" = {
forceSSL = true;
enableACME = true;
listen = [
{
addr = "0.0.0.0";
port = 443;
ssl = true;
}
{
addr = "[::]";
port = 443;
ssl = true;
} {
addr = "0.0.0.0";
port = 8448;
ssl = true;
}
{
addr = "[::]";
port = 8448;
ssl = true;
}
];
locations."/_matrix/" = {
proxyPass = "http://backend_conduit$request_uri";
proxyWebsockets = true;
extraConfig = ''
proxy_set_header Host $host;
proxy_buffering off;
'';
};
extraConfig = ''
merge_slashes off;
'';
};
"${server_name}" = {
forceSSL = true;
enableACME = true;
locations."=/.well-known/matrix/server" = {
# Use the contents of the derivation built previously
alias = "${well_known_server}";
extraConfig = ''
# Set the header since by default NGINX thinks it's just bytes
default_type application/json;
'';
};
locations."=/.well-known/matrix/client" = {
# Use the contents of the derivation built previously
alias = "${well_known_client}";
extraConfig = ''
# Set the header since by default NGINX thinks it's just bytes
default_type application/json;
# https://matrix.org/docs/spec/client_server/r0.4.0#web-browser-clients
add_header Access-Control-Allow-Origin "*";
'';
};
};
};
upstreams = {
"backend_conduit" = {
servers = {
"[::1]:${toString config.services.matrix-conduit.settings.global.port}" = { };
};
};
};
};
# Open firewall ports for HTTP, HTTPS, and Matrix federation
networking.firewall.allowedTCPPorts = [ 80 443 8448 ];
networking.firewall.allowedUDPPorts = [ 80 443 8448 ];
}
```
Now you can rebuild your system configuration and you should be good to go!
[enable_flakes]: https://nixos.wiki/wiki/Flakes#Enable_flakes
[specialargs]: https://nixos.wiki/wiki/Flakes#Using_nix_flakes_with_NixOS

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# Conduit for NixOS
Conduit can be acquired by Nix from various places:
* The `flake.nix` at the root of the repo
* The `default.nix` at the root of the repo
* From Nixpkgs
The `flake.nix` and `default.nix` do not (currently) provide a NixOS module, so
(for now) [`services.matrix-conduit`][module] from Nixpkgs should be used to
configure Conduit.
If you want to run the latest code, you should get Conduit from the `flake.nix`
or `default.nix` and set [`services.matrix-conduit.package`][package]
appropriately.
[module]: https://search.nixos.org/options?channel=unstable&query=services.matrix-conduit
[package]: https://search.nixos.org/options?channel=unstable&query=services.matrix-conduit.package