feat: streams module (WIP)

modules/streams/options.nix

@@ -0,0 +1,91 @@
+args@{ config, lib, pkgs, ... }:
+{
+  imports = [ ../options.nix ];
+
+  options.aether = {
+    streams = {
+      # INTERNAL
+      _internal.streams-src = lib.mkOption {
+        type = lib.types.pathInStore;
+        description = ''
+          The source repository of (streams).
+        '';
+      };
+
+      _internal.vendorHash = lib.mkOption {
+        type = lib.types.str;
+        description = ''
+          The vendor hash to use when finding PHP dependencies.
+        '';
+      };
+
+      # OPTIONS
+      package = lib.mkOption {
+        type = lib.types.package;
+        default = pkgs.callPackage ./package.nix {
+          src = config.aether.streams._internal.streams-src;
+          vendorHash = config.aether.streams._internal.vendorHash;
+          inherit (config.aether.streams) addonRepos themeRepos;
+        };
+        description = ''
+          The (streams) package to use.
+
+          The derivation must be built in a precise way to be compatible with
+          this module; see the package.nix file for details.
+        '';
+      };
+
+      subdomain = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = "streams";
+        description = ''
+          The subdomain to host the (streams) instance under.
+
+          If null, then (streams) is hosted at the domain itself.
+        '';
+      };
+
+      user = lib.mkOption {
+        type = lib.types.str;
+        default = "streams";
+        description = ''
+          The user to run (streams) with.
+        '';
+      };
+
+      createUser = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = ''
+          Whether to create the (streams) user automatically.
+        '';
+      };
+
+      addonRepos = lib.mkOption {
+        type = lib.types.listOf lib.types.pathInStore;
+        default = [];
+        defaultText = "[ <streams-addons> ]";
+        description = ''
+          A list of repositories containing addons.
+
+          The official addon repository is provided by default.
+        '';
+      };
+
+      themeRepos = lib.mkOption {
+        type = lib.types.listOf lib.types.pathInStore;
+        default = [];
+        description = ''
+          A list of repositories containing themes.
+        '';
+      };
+    };
+  };
+
+  config.assertions = lib.mkIf config.aether.https [
+    {
+      assertion = !(builtins.isNull config.aether.acmeEmail);
+      message = "HTTPS support requires providing a contact email";
+    }
+  ];
+}