Setting TREE_SITTER_DIR causes ENOENT on tree-sitter 0.20.0 + macOS

[Julian]

When trying to run either tree-sitter test or tree-sitter generate on macOS, I get:

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  ../tree-sitter-macos-x64 test                                                   julian@Airm
No such file or directory (os error 2)

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  ../tree-sitter-macos-x64 generate                                               julian@Airm
No such file or directory (os error 2)

which is due to having TREE_SITTER_DIR set to tell tree-sitter where to put its files.

Either brew install tree-sitter or the official release (wget https://github.com/tree-sitter/tree-sitter/releases/download/v0.20.0/tree-sitter-macos-x64.gz) seem to do so for me.

Minimal reproducer run on a tree sitter project:

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  ls                                                                                                                                                                               julian@Airm
bindings  grammar  src  test  COPYING  Cargo.toml  README.rst  binding.gyp  grammar.js  package-lock.json  package.json

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  mkdir foo                                                                                                                                                                        julian@Airm

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  env -i TREE_SITTER_DIR=$PWD/foo =tree-sitter test | tail -n3                                                                                                                     julian@Airm
No such file or directory (os error 2)

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  env -i =tree-sitter test | tail -n3                                                                                                                                              julian@Airm
    ✓ Interpolation
    ✓ Interpolation With Function Application
    ✓ Interpolation With Escape Sequences

~/Desktop/tree-sitter-lean is a git repository on main 
⊙  env -i TREE_SITTER_DIR= =tree-sitter test | tail -n3                                                                                                                             julian@Airm
No such file or directory (os error 2)

[CyberShadow]

which is due to having TREE_SITTER_DIR set to tell tree-sitter where to put its files.

What does this refer to (where does the expectation for the behavior described here come from)?

Looking at the code, TREE_SITTER_DIR seems to be used only to indicate the location of a config.json file:
https://github.com/tree-sitter/tree-sitter/search?q=TREE_SITTER_DIR&type=code
If the variable is set, then it is expected to point to a valid location.

[Julian]

I've been doing it since #628 (comment) (and it worked with previous releases)

[Julian]

It looks like #1157 means I don't need to set it anymore, since now the files will default to ~/Library/ApplicationSupport which is where I was putting them, but I suspect someone else may run into the above.