Toggle Format on Save does nothing after enabling conform

[volfyd]

⚠️ Please verify that this bug has NOT been reported before.

• I checked all existing issues and didn't find a similar issue

Description

When using conform, the buffer local variable for disabling formatting is not checked.

I added this to my config to handle the issue:

        format_after_save =
          lib.generators.mkLuaInline
          # lua
          ''
            function(bufnr)
              if vim.b[bufnr].disableFormatSave then
                return
              end
              return { lsp_format = "fallback" }
            end
          '';
        format_on_save =
          lib.generators.mkLuaInline
          # lua
          ''
            function(bufnr)
              if vim.b[bufnr].disableFormatSave then
                return
              end
              return { timeout_ms = 500, lsp_format = "fallback" }
            end
          '';

👟 Reproduction steps

    formatter.conform-nvim = {
      enable = true;
      setupOpts = {
        formatters = {
          alejandra = {
            command = "${pkgs.alejandra}/bin/alejandra";
          };
        };
        formatters_by_ft = {
          nix = ["alejandra"];
        };
      };
    };

👀 Expected behavior

ltf should toggle formatting on save.

😓 Actual Behavior

formatting happens.

💻 Metadata

❯ nix-shell -p nix-info --run "nix-info -m" - system: "aarch64-linux" - host os: Linux 6.1.128-rt49, NixOS, 24.11 (Vicuna), 24.11.20250313.cdd2ef0 - multi-user?: yes - sandbox: yes - version: nix-env (Nix) 2.24.12 - nixpkgs: /nix/store/vawkv67jxh8kl4flrqgpcsmn9inqgvjv-source

📝 Relevant log output

none

[NotAShelf]

formatOnSafe does not yet integrate with conform. Though an integration might be added as a followup to #749. Until then I might add a warning to the documentation.

[alfarelcynthesis]

Conform does have it's own option for formatting on/after save (in general, doesn't seem toggleable per buffer?), but it is broken in the current nvf module. I'll pr the fix, it's just allowing null. pr.

If you sometimes want it off, you may be able to get by by disabling it by default and formatting using a keybind?

[NotAShelf]

Could you see if #753 resolves this issue? It has been merged in main, and this issue can be closed if the problem is solved.