niri: configure for me

packages/klem/default.nix

@@ -0,0 +1,56 @@
+# klem < klemm < klemmbrett ~ clipboard
+{
+  lib,
+  dmenu,
+  curl,
+  gnused,
+  coreutils,
+  wl-clipboard,
+  libnotify,
+  writers,
+  options ? { },
+  ...
+}:
+let
+  eval = lib.evalModules {
+    modules = [
+      {
+        imports = [ options ];
+        options = {
+          dmenu = lib.mkOption {
+            default = "${dmenu}/bin/dmenu -i -p klem";
+            type = lib.types.path;
+          };
+          scripts = lib.mkOption {
+            default = {
+              pastebin = "${curl}/bin/curl -fSs -F 'f:1=<-' ix.io";
+              shorten = ''
+                ${curl}/bin/curl -fSs -F "shorten=$(${coreutils}/bin/cat)" https://0x0.st
+              '';
+              "replace p.r" = "${gnused}/bin/sed 's/\\<r\\>/krebsco.de/'";
+            };
+            type = lib.types.attrs;
+          };
+        };
+      }
+    ];
+  };
+
+  cfg = eval.config;
+in
+writers.writeDashBin "klem" ''
+  set -efu
+
+  ${wl-clipboard}/bin/wl-paste \
+    | case $(echo "${lib.concatStringsSep "\n" (lib.attrNames cfg.scripts)}" | ${cfg.dmenu}) in
+      ${lib.concatStringsSep "\n" (
+        lib.mapAttrsToList (option: script: ''
+          '${option}') ${toString script} ;;
+        '') cfg.scripts
+      )}
+      *) ${coreutils}/bin/cat ;;
+    esac \
+    | ${wl-clipboard}/bin/wl-copy
+
+  ${libnotify}/bin/notify-send --app-name="klem" "Result copied to clipboard."
+''