tree-sitter-rpmspec-altlinux

A tree-sitter grammar for ALT Linux RPM spec files. This grammar extends tree-sitter-rpmspec with ALT Linux-specific features that are not part of the rpm.org specification.

ALT Linux Extensions

BuildRequires(pre)

ALT Linux supports a (pre) qualifier on BuildRequires to declare packages needed for building the source RPM (.src.rpm), as opposed to full build dependencies. Typically these are RPM macro packages:

BuildRequires(pre): rpm-macros-cmake
BuildRequires(pre): rpm-macros-systemd
BuildRequires: cmake gcc-c++ systemd-devel

This is equivalent to the deprecated BuildPreReq tag but with explicit qualifier syntax. Standard RPM (rpm.org, RPM 6.x) does not support this tag and will reject it.

Planned Extensions

• %if_enabled / %if_disabled — ALT Linux conditional macros

How It Works

This grammar uses tree-sitter's grammar inheritance mechanism — the same approach used by tree-sitter-cpp (extends tree-sitter-c) and tree-sitter-typescript (extends tree-sitter-javascript).

The grammar.js imports the base tree-sitter-rpmspec grammar and overrides only the rules that differ in ALT Linux:

const rpmspec = require('tree-sitter-rpmspec/rpmspec/grammar');

module.exports = grammar(rpmspec, {
    name: 'rpmspec_altlinux',
    rules: {
        _requires_tag: ($) => choice(
            // ... base rules plus ALT Linux extensions
        ),
    },
});

Development

Prerequisites

• Node.js >= 18
• tree-sitter CLI >= 0.25
• C compiler (gcc or clang)
• CMake >= 3.13

Setup

npm install

Building

# Regenerate the parser
tree-sitter generate

# Build the native library
cmake -B build
cmake --build build

Testing

# Run all tests
tree-sitter test

# Run specific tests
tree-sitter test -i "ALT Linux"

Code Quality

prettier -w grammar.js

License

MIT — see LICENSE.

Credits

• Base grammar: tree-sitter-rpmspec by Andreas Schneider
• ALT Linux extensions: Alexey Shabalin