feat(emacs-pkgs/treecrumbs): tree-sitter based breadcrumbs r/7665

Adds a new 'treecrumbs' Emacs package that allows displaying fast,
tree-sitter based breadcrumbs. The initial version only supports
YAML (which is what I needed this for!).

The package is documented, please go read the code and comments for
more information.

I assign copyright over this package to the FSF, paperwork is on file.
This means that I can only accept contributions from people with the
right paperwork. If this package ends up being useful, I intend to
eventually submit it to GNU Emacs.

Change-Id: If1297a080f63f402f83b6cc57fa7c970d32d3695
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11104
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/emacs-pkgs/treecrumbs/default.nix b/tools/emacs-pkgs/treecrumbs/default.nix
new file mode 100644
index 0000000000..8895baab9a
--- /dev/null
+++ b/tools/emacs-pkgs/treecrumbs/default.nix
@@ -0,0 +1,7 @@
+{ depot, ... }:
+
+depot.tools.emacs-pkgs.buildEmacsPackage {
+  pname = "treecrumbs";
+  version = "1.0";
+  src = ./treecrumbs.el;
+}