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Dependencies: - v8: zig-v8-fork 0.17 branch (lightpanda-io/zig-v8-fork#218). - sqlite3: build the amalgamation directly; the allyourcodebase wrapper has no 0.17 support yet. - pcre2: master commit with 0.17 support (no release yet). - translate_c package (2.0.0) replaces the deprecated addTranslateC. default_init is set to keep 0.16's zero-initialized struct fields. Build: - b.pathFromRoot/build_root/args/sysroot are gone: resolve paths from b.root, use addPassthruArgs, declare configure-time file and directory dependencies, and poison the configure cache for the git version. - Drop curl config values the template never used (now an error). - Drop the 0.16 zip-fetch workaround from the Makefile and CI. - -Doptimize=ReleaseFast -> -Doptimize=fast. Language and std: - @intFromEnum/@enumFromInt -> @backingInt/@fromBackingInt. - Struct-of-arrays @typeInfo (field_names, field_types, decl_names, param_types, error_names). - `a ** n` removed: @splat for arrays, string.repeat for strings. - errdefer captures removed: split WebDriver.run and fulfillRedirect. - @hasDecl only sees pub decls: make StyleManager's Spec.finish pub, otherwise it silently stops running. - SafeAllocator replaces DebugAllocator; the test runner now has to initialize std.testing.allocator_instance itself. - std.fmt.allocPrint/bufPrint -> Allocator.print/std.mem.print, dupeZ -> dupeSentinel, std.builtin -> std.lang, builtin.os -> builtin.target.os, zon.parse arena API, BufferFirstAllocator, and the remaining renames (getLastOrNull, bit_set, ascii.find*, meta.Int).
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AGENTS.md
See CONTRIBUTING.md for how to open a pull request (CLA, dev setup, pre-PR checks).
Build and tests
Run make download-v8 once first: it fetches the prebuilt V8 archive into .lp-cache/, which build.zig picks up automatically. Without it every build compiles V8 from source (10+ minutes).
The C and Rust dependencies are built with -Doptimize=fast whatever -Doptimize is, so debug and release builds share them. Pass ZIGFLAGS=-Ddebug_deps to step into a dependency with a debugger.
make test # Run all tests
make test F="server" # Filter by substring
TEST_FILTER="WebApi: #selector_all" make test # Filter main + subtest (separator: #)
TEST_VERBOSE=true make test
TEST_FAIL_FIRST=true make test
METRICS=true make test # Capture allocation/duration metrics as JSON
The custom test runner (src/test_runner.zig) detects memory leaks in debug builds. A test that allocates without freeing fails — not just lints.
Formatting
zig fmt --check ./*.zig ./**/*.zig # Exact command CI runs
zig build depends on the fmt step, so a local build catches drift too.
Conventions
Mirror the patterns in neighboring files. In particular:
@importalias case follows the imported file's basename (const Frame = @import("Frame.zig"),const ast = @import("ast.zig")).- Prefer struct-init type inference (
.{ ... }) where the expected type is known from the function signature or variable annotation.