build: introduce NixOS package & serviceHEADmaster

1 files changed, 52 insertions, 0 deletions

diff --git a/service.nix b/service.nix
new file mode 100644
index 0000000..fcd665e
--- /dev/null
+++ b/service.nix
@@ -0,0 +1,52 @@
+{ config, lib, pkgs, ... }:
+
+let
+  osm_proposals = pkgs.callPackage ./default.nix {};
+  cfg = config.services.osm_proposals;
+in
+{
+  options.services.osm_proposals = {
+    enable = lib.mkEnableOption "osm_proposals";
+
+    virtualHost = lib.mkOption {
+      type = lib.types.str;
+      description = "Name of the nginx virtualhost to set up.";
+    };
+
+    nginx = lib.mkOption {
+      type = lib.types.submodule (import <nixpkgs/nixos/modules/services/web-servers/nginx/vhost-options.nix>);
+      default = {};
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.nginx = {
+      enable = true;
+
+      virtualHosts.${cfg.virtualHost} = lib.mkMerge [
+        cfg.nginx
+        {
+          locations."/" = {
+            root = "${osm_proposals}/share/osm-proposals";
+          };
+          locations."=/proposals.json" = {
+            extraConfig = ''
+              alias /var/lib/osm-proposals/proposals.json;
+            '';
+          };
+        }
+      ];
+    };
+
+    systemd.services.osm-proposals = {
+      serviceConfig = {
+        Type = "oneshot";
+        StateDirectory = "osm-proposals"; # creates /var/lib/osm-proposals
+        ExecStart = "${osm_proposals}/bin/osm-proposals /var/lib/osm-proposals/proposals.json";
+        # Not using DynamicUser because then the StateDirectory becomes unreadable
+        # by other users, even when setting StateDirectoryMode for some reason.
+      };
+      startAt = "hourly";
+    };
+  };
+}