programs: add rofi (dmenu-style launcher/file browser)

hosts/common/programs/default.nix

@@ -77,6 +77,7 @@
     ./playerctl.nix
     ./rhythmbox.nix
     ./ripgrep.nix
+    ./rofi
     ./sane-scripts.nix
     ./sfeed.nix
     ./signal-desktop.nix

hosts/common/programs/rofi/config.rasi

@@ -0,0 +1,33 @@
+/* to show active config: `rofi -dump-config`
+ * to show keybindings: `rofi -show keys`
+ * to show theme config: `rofi -dump-theme`
+ * - for live theme switching: `rofi-theme-selector`
+ */
+
+configuration {
+  modes: "combi";
+  show-icons: true;
+  combi-modes: "filebrowser,drun,run";
+  kb-accept-entry: "Return,KP_Enter,XF86PowerOff";
+  kb-row-up: "Up,XF86AudioRaiseVolume";
+  kb-row-down: "Down,XF86AudioLowerVolume";
+  filebrowser {
+    /* filebrowser starting directory */
+    directory: "/home";
+    /* display-name: text to prepend in combi mode */
+    display-name: "/";
+  }
+  drun {
+    display-name: " ";
+  }
+  run {
+    display-name: "run ";
+  }
+  /* combi-display-format: "{mode} {text}"; */
+  /* combi-display-format: "{text}"; */
+  combi-display-format: "{mode}{text}";
+
+  drun-use-desktop-cache: true;
+}
+
+@theme "gruvbox-light"

hosts/common/programs/rofi/default.nix

@@ -0,0 +1,40 @@
+# rofi: app-launcher/file-browser/omni-menu
+#
+# select options:
+# - `rofi -show`
+#   - use as a launcher/file browser
+# - `rofi -sidebar-mode`
+#   - separate tabs for filebrowser, drun, etc.
+# - `rofi -pid /run/user/$UID/rofi.pid -replace`
+#   - single-instance mode
+#   - pid is probably optional, just need `-replace`.
+#
+# ROFI POWERSCRIPTS/EXTENSIONS/PLUGINS:
+# collections:
+# - <https://github.com/adi1090x/rofi>
+# - <https://github.com/giomatfois62/rofi-desktop>
+#   - turns rofi into a hierarchical menu, like sxmo
+#
+# - <https://github.com/adi1090x/rofi>
+# - <https://github.com/marvinkreis/rofi-file-browser-extended>
+# - <https://github.com/Mange/rofi-emoji>
+# - <https://github.com/fdw/rofimoji>
+# - <https://github.com/jluttine/rofi-power-menu>
+# - <https://github.com/ceuk/rofi-screenshot>
+# - <https://gitlab.com/DamienCassou/rofi-pulse-select>
+{ pkgs, ... }:
+{
+  sane.programs.rofi = {
+    # 2024/02/26: wayland is only supported by the fork: <https://github.com/lbonn/rofi>.
+    # it's actively maintained though, and more of an overlay than a true fork.
+    packageUnwrapped = pkgs.rofi-wayland;
+
+    fs.".config/rofi/config.rasi".symlink.target = ./config.rasi;
+    # redirect its default drun cache location
+    fs.".cache/rofi-drun-desktop.cache".symlink.target = "rofi/rofi-drun-desktop.cache";
+    persist.byStore.plaintext = [
+      # optional, for caching .desktop files rofi finds on disk (perf)
+      ".cache/rofi"
+    ];
+  };
+}