tree-sitter-cabal

Tree-sitter grammars for Haskell's Cabal build system.

• tree-sitter-cabal — .cabal package description files
• tree-sitter-cabal-project — cabal.project / *.project workspace files

The .cabal grammar was initially forked from magus/tree-sitter-cabal.

Setup

nix develop   # enter dev shell (provides tree-sitter, just, etc.)

Commands

All commands run across both grammars via the top-level justfile.

Command	Description
just	Run all tests (default)
just test	Grammar unit tests + parse-corpus check
just build	Generate parser and build shared library
just check	Validate grammar without building
just fmt	Format grammar files (prettier + nixfmt)
just clean	Remove build artifacts

Per-grammar commands are available as just cabal::<cmd> and just cabal-project::<cmd>.

The test target includes a corpus parse over the same test set from the Cabal source files (from the cabal repo) to catch regressions not covered by the inline test cases.

References

• Tree-sitter: Creating parsers
• Cabal: .cabal file reference
• Cabal: cabal.project reference

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Disclaimer: Co-produced with a coding agent.