feat: pipeline - org2md file watch

pipeline/flake.nix

@@ -30,7 +30,7 @@
               ./mix.lock
             ];
           };
-          sha256 = "sha256-E79X+nUy86G1Jrwv3T7dXekoGv8Hd14ZgJSKWjvlmAw=";
+          sha256 = "sha256-si7JAomY1HZ33m6ihUJP5i6PO39CE1clYvuMtn0CbPU=";
         };
 
         # Compiled pipeline escript (without runtime wrappers).
@@ -49,7 +49,7 @@
         # the escript's System.cmd("emacs", ...) calls succeed.
         pipelineApp = pkgs.writeShellApplication {
           name = "pipeline";
-          runtimeInputs = [ emacsWithOxHugo ];
+          runtimeInputs = [ emacsWithOxHugo pkgs.inotify-tools ];
           text = ''
             exec ${pipelineEscript}/bin/pipeline "$@"
           '';
@@ -62,6 +62,7 @@
         devShells.default = pkgs.mkShell {
           buildInputs = [
             pkgs.elixir
+            pkgs.inotify-tools
             emacsWithOxHugo
           ];
         };