1 files changed, 122 insertions, 0 deletions
diff --git a/modules/desktop/eww/bar.nix b/modules/desktop/eww/bar.nix
new file mode 100644
index 0000000..4f6c158
--- /dev/null
+++ b/modules/desktop/eww/bar.nix
@@ -0,0 +1,122 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+{
+  config = lib.mkIf config.desktop.enable {
+    programs.eww.yuckConfig =
+      let
+        mkLuaScript =
+          {
+            name,
+            path,
+            description ? "",
+            lua ? pkgs.luajit,
+            luaPackages ? (_: [ ]),
+            deps ? [ ],
+            gobjectIntrospection ? false,
+          }:
+          let
+            luaEnv = lua.withPackages luaPackages;
+            pathPrefix = lib.concatStringsSep ":" ([ "${luaEnv}/bin" ] ++ map (p: "${lib.getBin p}/bin") deps);
+          in
+          pkgs.stdenv.mkDerivation {
+            pname = name;
+            version = "0.1.0";
+            src = path;
+            dontUnpack = true;
+            meta = lib.optionalAttrs (description != "") { inherit description; } // {
+              mainProgram = name;
+            };
+
+            nativeBuildInputs =
+              lib.optionals gobjectIntrospection [
+                pkgs.wrapGAppsHook3
+                pkgs.gobject-introspection
+              ]
+              ++ lib.optional (!gobjectIntrospection) pkgs.makeWrapper;
+            buildInputs = lib.optionals gobjectIntrospection [ pkgs.gtk3 ];
+
+            installPhase = ''
+              mkdir -p $out/bin
+              install -m755 $src $out/bin/${name}
+              patchShebangs $out/bin/${name}
+            '';
+
+            # wrapGAppsHook3 wraps every executable in $out/bin automatically,
+            # setting GI_TYPELIB_PATH etc. from buildInputs' closure. With
+            # gobjectIntrospection = false a plain wrapProgram only extends PATH.
+            preFixup =
+              if gobjectIntrospection then
+                ''
+                  gappsWrapperArgs+=(--prefix PATH : "${pathPrefix}")
+                ''
+              else
+                ''
+                  wrapProgram $out/bin/${name} --prefix PATH : "${pathPrefix}"
+                '';
+          };
+
+        system-stats = mkLuaScript {
+          name = "eww-system-stats";
+          path = ./system-stats.lua;
+          description = "Emit {cpu, ram, net} as JSON.";
+          luaPackages = (
+            ps: [
+              ps.lua-cjson
+              ps.luaposix
+            ]
+          );
+          deps = [
+            pkgs.iw
+            pkgs.iproute2
+            pkgs.pamixer
+            pkgs.inotify-tools
+            pkgs.dmidecode
+          ];
+        };
+
+        niri-status = mkLuaScript {
+          name = "niri-status";
+          path = ./niri-status.lua;
+          description = "Emit workspace and active window information list.";
+          luaPackages = (
+            ps: [
+              ps.lgi
+              ps.lua-cjson
+            ]
+          );
+          deps = [ config.desktop.niri.package ];
+          gobjectIntrospection = true;
+        };
+      in
+      builtins.replaceStrings
+        [
+          "@@niri-status-script@@"
+          "@@system-stats-script@@"
+          "@@icon-offline@@"
+          "@@icon-wifi@@"
+          "@@icon-ethernet@@"
+          "@@icon-proxy@@"
+          "@@icon-cpu@@"
+          "@@icon-ram@@"
+          "@@icon-audio@@"
+          "@@icon-calendar@@"
+        ]
+        [
+          (lib.getExe niri-status)
+          (lib.getExe system-stats)
+          (toString ../../../assets/icons/bar/offline.svg)
+          (toString ../../../assets/icons/bar/wifi.svg)
+          (toString ../../../assets/icons/bar/ethernet.svg)
+          (toString ../../../assets/icons/bar/proxy.svg)
+          (toString ../../../assets/icons/bar/cpu.svg)
+          (toString ../../../assets/icons/bar/ram.svg)
+          (toString ../../../assets/icons/bar/audio.svg)
+          (toString ../../../assets/icons/bar/calendar.svg)
+        ]
+        (builtins.readFile ./bar.yuck);
+  };
+}