Missing Syntax Highlighting when installed with Homebrew

[Unix-Code]

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• I have consulted the Troubleshooting guide.
• I have searched Issues and Discussions in this repo.
• Feature requests should be initiated as Discussions. This is a bug report.

Describe the bug
A clear and concise description of what the bug is.

No matter what theme I set harlequin to, I don't see any syntax highlighting. I also cannot find any documentation about how to separately enable syntax highlighting (so I assume it should be enabled by default).

To Reproduce
Steps to reproduce the behavior.
Simply open the UI in any adapter.

Expected behavior
A clear and concise description of what you expected to happen.

Actual behavior
A clear and concise description of what happened; please include screenshots or videos of Harlequin if possible.

Contributing
Are you interested in contributing a fix?

• Yes
• Maybe
• No

Additional context
Please provide as much as you can, but don't waste your time if it's definitely not relevant or you don't know.

What is the output of harlequin --version?
2.0.0

What database adapter are you using with Harlequin? (Default is duckdb)
postgres / duckdb (occurs across several I tried)

What other options are you using when invoking Harlequin? (If you are using a profile, please add relevant items from your profile here).

Can you tell us more about your system?

• Shell:
• Terminal:
• OS of the shell:
• OS of the terminal (if different from the shell):
• Default locale / language for your OS/Terminal/Shell:

Shell: ZSH
Terminal: Ghostty
OS of the shell: Mac OSX

Tip

For example, for my system, these are:

• Bash
• Windows Terminal
• Ubuntu 22.04 / WSL2
• Windows 11
• en_US/UTF-8

How did you install Harlequin?

• pipx
• conda/mamba
• pip (global install)
• pip + venv/virtualenv or pipenv
• Poetry
• uv/Rye
• other: Homebrew

[tconbeer]

I'd bet the Homebrew formula isn't downloading the tree-sitter language packs correctly.

Can you try installing with uv instead to see if you can reproduce?

curl -LsSf https://astral.sh/uv/install.sh | sh
uvx harlequin

[tconbeer]

Yeah, this is no longer the right way to install the tree-sitter language dependencies (changed in Textual 0.89):

https://github.com/Homebrew/homebrew-core/blob/d8ac0e0fe3792f963c9134653a0f737386d0377c/Formula/h/harlequin.rb#L204-L207

tree-sitter-sql should be installed independently. See

https://github.com/Textualize/textual/blob/a05cffaf51ac361c56ad74bef2f4b5fa0832c03f/pyproject.toml#L70

@mfinelli can you help with this?