l: override dmenu with fzfmenu

lass/2configs/baseX.nix

@@ -126,6 +126,12 @@ in {
     restartIfChanged = false;
   };
 
+  nixpkgs.config.packageOverrides = super: {
+    dmenu = pkgs.writeDashBin "dmenu" ''
+      ${pkgs.fzfmenu}/bin/fzfmenu "$@"
+    '';
+  };
+
   krebs.xresources.enable = true;
   lass.screenlock.enable = true;
 }

lass/5pkgs/fzfmenu/default.nix

@@ -0,0 +1,33 @@
+{ pkgs, ... }:
+
+pkgs.writeDashBin "fzfmenu" ''
+  set -efu
+  PROMPT=">"
+  for i in "$@"
+  do
+  case $i in
+      -p)
+      PROMPT="$2"
+      shift
+      shift
+      break
+      ;;
+      *)
+      echo "Unknown option $1"
+      shift
+      ;;
+  esac
+  done
+  INPUT=$(${pkgs.coreutils}/bin/cat)
+  OUTPUT="$(${pkgs.coreutils}/bin/mktemp)"
+  ${pkgs.rxvt_unicode}/bin/urxvt \
+    -name fzfmenu -title fzfmenu \
+    -e ${pkgs.dash}/bin/dash -c \
+      "echo \"$INPUT\" | ${pkgs.fzf}/bin/fzf \
+        --history=/dev/null \
+        --no-sort \
+        --prompt=\"$PROMPT\" \
+        > \"$OUTPUT\"" 2>/dev/null
+  ${pkgs.coreutils}/bin/cat "$OUTPUT"
+  ${pkgs.coreutils}/bin/rm "$OUTPUT"
+''