The tree-sitter package installs the `tree-sitter` command-line program, which contains several useful subcommands for writing and using programming language parsers. Some of these subcommands have additional dependencies [1], which are not currently listed in tree-sitter's Arch package.

[1] https://tree-sitter.github.io/tree-sitter/creating-parsers#dependencies

The `tree-sitter generate` subcommand generates the C implementation of a particular language's parser from its grammar definition. The grammars are written in a JavaScript DSL, and this subcommand shells out to `node` to execute the DSL. Per the documentation, nodejs >= 6.0 is needed. (No additional JS packages are required, just the node runtime.)

Several subcommands (including `tree-sitter parse` and `tree-sitter tags`) look for grammar definitions in a user-configurable location, and will generate and compile the grammars on the fly if needed. This requires a C compiler. Is there a generic "C compiler" pseudo-package that we could list as a dependency? If not we could list gcc and/or clang specifically.

In all of the above, the tree-sitter command should fail gracefully if the required programs are not available, which suggests that these should all be listed as optional dependencies.

Thanks!