vscode-extensions.foxundermoon.shell-format: add missing dependency

pkgs/applications/editors/vscode/extensions/default.nix

@@ -18,6 +18,7 @@
 , clojure-lsp
 , alejandra
 , millet
+, shfmt
 }:
 
 let
@@ -1088,6 +1089,14 @@ let
           version = "7.1.0";
           sha256 = "09z72mdr5bfdcb67xyzlv7lb9vyjlc3k9ackj4jgixfk40c68cnj";
         };
+
+        nativeBuildInputs = [ jq moreutils ];
+
+        postInstall = ''
+          cd "$out/$installPrefix"
+          jq '.contributes.configuration.properties."shellformat.path".default = "${shfmt}/bin/shfmt"' package.json | sponge package.json
+        '';
+
         meta = with lib; {
           downloadPage = "https://marketplace.visualstudio.com/items?itemName=foxundermoon.shell-format";
           homepage = "https://github.com/foxundermoon/vs-shell-format";