add misskey package and module

[yu-re-ka]

Motivation for this change

Running on https://mk.yuka.dev

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[yu-re-ka]

This is now ready for review.

I considered adding abstractions for database/redis configuration, or a module documentation, but both of these made my head smoke too much because of the opinionated nature of these topics.

This is how my config looks using this module:

{ config, ... }:

{
  services.misskey = {
    enable = true;
    settings = {
      url = "https://mk.yuka.dev/";
      port = 11231;
      id = "aid";
      db = {
        host = "/run/postgresql";
        port = config.services.postgresql.port;
        user = "misskey";
        db = "misskey";
      };
      redis = {
        host = "localhost";
        port = config.services.redis.servers.misskey.port;
      };
    };
  };
  services.postgresql = {
    enable = true;
    ensureDatabases = [ "pleroma" ];
    ensureUsers = [
      {
        name = "misskey";
        ensurePermissions."DATABASE misskey" = "ALL PRIVILEGES";
      }
    ];
  };
  services.redis.servers.misskey = {
    enable = true;
    bind = "127.0.0.1";
    port = 16434;
  };
  # services.nginx.recommended* are set globally in another file
  services.nginx.virtualHosts."mk.yuka.dev" = {
    enableACME = true;
    forceSSL = true;
    locations = {
      "/" = {
        proxyPass = "http://127.0.0.1:${toString config.services.misskey.settings.port}/";
        proxyWebsockets = true;
      };
    };
  };
}

If someone wants to create a manual entry from that, I would be grateful.

[DeeUnderscore]

Other than the listed concerns, this looks good. I moved my instance (https://mi.underscore.world) to it, and it seems to be working well.

[yu-re-ka]

@kloenk maybe you can add the missing inputs for darwin? It is not finding some XCode tools.

[yayayayaka]

If someone wants to create a manual entry from that, I would be grateful.

Will do.

[yu-re-ka]

Updated misskey and rebased

[DeeUnderscore]

Looks like the outermost element should be a <chapter xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="misskey">, otherwise the manual doesn't build

[yu-re-ka]

Someone else feel free to use the contents of this PR as basis for a new one