machines/profpatsch/base-workstation: add upower with suspend

Upstream is dumb, but the tool is certainly useful, so let’s patch it
to make it workable and then also patch the nixos module …

1 files changed, 84 insertions, 0 deletions

diff --git a/modules/services/upower-minimal.nix b/modules/services/upower-minimal.nix
new file mode 100644
index 00000000..25de830d
--- /dev/null
+++ b/modules/services/upower-minimal.nix
@@ -0,0 +1,84 @@
+# this is the
+# Upower daemon.
+# module from nixpkgs, but with the option to suspend and less configuration
+
+{ config, lib, pkgs, ... }:
+
+let
+
+  cfg = config.vuizvui.services.upower;
+
+  ini = pkgs.formats.ini {};
+
+  pkg = pkgs.upower.overrideAttrs (old: {
+    patches = [
+      # Adds a "Suspend" action to what to do when the battery is critical
+      (pkgs.fetchpatch {
+        url = "https://gitlab.freedesktop.org/upower/upower/-/merge_requests/11.patch";
+        sha256 = "sha256-y8ysD+fJIi5SZkWp2n061VBA5cs1EMftOof/h2tvDGo=";
+      })
+    ];
+  });
+
+in
+
+{
+
+  ###### interface
+
+  options = {
+
+    vuizvui.services.upower = {
+
+      enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = ''
+          Whether to enable Upower, a DBus service that provides power
+          management support to applications.
+        '';
+      };
+
+      settings = lib.mkOption {
+        type = lib.types.nullOr ini.type;
+        default = null;
+        description = ''
+          The upower configuration.
+
+          If null, the default values in <literal>${pkg}/etc/UPower/UPower.conf<literal> are used.
+
+          So far it looks like there is always only one Section called <literal>UPower</literal>
+        '';
+        example = {
+          UPower = {
+            TimeCritical = 300;
+            CriticalPowerAction = "Hibernate";
+          };
+        };
+      };
+
+    };
+
+  };
+
+
+  ###### implementation
+
+  config = lib.mkIf cfg.enable {
+
+
+    # this is … questionable … l o w  e f f o r t
+
+    environment.systemPackages = [ pkg ];
+
+    services.dbus.packages = [ pkg ];
+
+    services.udev.packages = [ pkg ];
+
+    systemd.packages = [ pkg ];
+
+    environment.etc."UPower/UPower.conf".source =
+      ini.generate "UPower.conf" cfg.settings;
+  };
+
+}