Merge 'reorg' into 'main'

This patch moves in the reorganizational work done on the reorg branch,
mainly:

* Move host-specific modules into hosts/<host>/<module>
* Break up HM config

See the reorg branch for the individual commits.

1 files changed, 61 insertions, 0 deletions

diff --git a/hosts/ahmed/duksebot/default.nix b/hosts/ahmed/duksebot/default.nix
new file mode 100644
index 0000000..f15b0ff
--- /dev/null
+++ b/hosts/ahmed/duksebot/default.nix
@@ -0,0 +1,61 @@
+# This module defines systemd unit which runs a script that sends Discrord
+# messages. I use it to notify my classmates about who's on cleaning duty. You
+# are probably not interested in this.
+
+{
+  config,
+  pkgs,
+  ...
+}: let
+  # What script to run.
+  package = pkgs.duksebot;
+in {
+  config = {
+    # Create a user to run the server under.
+    users.users.duksebot = {
+      description = "Runs daily dukse reminder";
+      group = "duksebot";
+      isSystemUser = true;
+      home = "/srv/duksebot";
+      createHome = true;
+    };
+    users.groups.duksebot = {};
+
+    age.secrets.duksebot-env = {
+      file = ../../../secrets/duksebot.env.age;
+      owner = config.users.users.duksebot.name;
+      group = config.users.users.duksebot.group;
+      mode = "0440";
+    };
+
+    # Create a service which simply runs script. This will be invoked by our timer.
+    systemd.services.duksebot = {
+      serviceConfig = {
+        # We only want to run this once every time the timer triggers it.
+        Type = "oneshot";
+        # Run as the user we created above.
+        User = "duksebot";
+        Group = "duksebot";
+        WorkingDirectory = config.users.users.duksebot.home;
+      };
+      script = ''
+        # Load the secret environment variables.
+        export $(grep -v '^#' ${config.age.secrets.duksebot-env.path} | xargs)
+        # Kick off.
+        exec "${package}"/bin/duksebot
+      '';
+    };
+
+    # Create a timer to activate our oneshot service.
+    systemd.timers.duksebot = {
+      wantedBy = ["timers.target"];
+      partOf = ["duksebot.service"];
+      after = ["network-online.target"];
+      wants = ["network-online.target"];
+      timerConfig = {
+        OnCalendar = "*-*-* 7:00:00";
+        Unit = "duksebot.service";
+      };
+    };
+  };
+}