Adds a bell-leak-check-gnome NixOS test (nix/tests.nix) that launches
Ghostty under GNOME on Wayland, rings 100 bells in the window, and fails
if the GUI process thread count grows per-bell — the end-to-end
signature of the GStreamer pipeline leak fixed in this branch. Verified
locally: growth of ~1 thread over 100 bells, vs ~+400 pre-fix.
Replaces the earlier Xvfb shell script + workflow job: per review, X11
support in GNOME is going away, and this belongs as a Nix check
alongside the other *-gnome tests rather than a standalone script.
The VM has no GPU, so it renders via llvmpipe; the test gives the guest
enough cores/RAM for software GL and tolerates the +new-window D-Bus
activation exceeding its client-side timeout (the window still comes up)
by waiting for the window rather than hard-failing on the call.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Zigs build infra computes relatives paths to build-time executables that use `setCwd.`
The logic is purely lexical and doesn't take into account symlinks, unlike `chdir` that follows symlinks.
If the `cwd` resolves to a different depth, then the relative path becomes incorrect.
On macOS 26.4, AFL builds were picking up Nix compiler-wrapper
variables and Apple SDK target settings from the shell environment.
That caused afl-cc to drive the wrong linker and target configuration,
which broke even simple fuzz harness builds. Unset the Nix compiler and
linker environment in the fuzz dev shell so AFL++ uses the system or
Homebrew Apple toolchain directly.
Also force afl-cc to link with lld because the newer Apple linker
asserts on the custom sections emitted by AFL's LLVM
instrumentation. Finally, pin fuzz-libghostty to the host target so the
build does not inherit stray SDK targets from the environment.
`${prefix}/include` and `${prefix}/lib` are wrong under split-prefix installs (e.g. Nix multi-output).
Use `b.h_dir` / `b.lib_dir` instead and drop the unneeded Nix postInstall/postFixup hooks.
Co-Authored-By: Sander <hey@sandydoo.me>
This updates simdutf to my fork which has a SIMDUTF_NO_LIBCXX option
that removes all libc++ and libc++ ABI dependencies.
From there, the hand-written simd code we have has been updated to also
no longer use any libc++ features. Part of this required removing utfcpp
since it depended on libc++ (`<iterator>`).
libghostty-vt now only depends on libc.
Keep libghostty-vt.pc as the shared/default pkg-config module so
`pkg-config --static libghostty-vt` continues to emit the historical
`-lghostty-vt` flags. This preserves the old behavior for consumers
that still want it, even though that form remains ambiguous on macOS
when both the dylib and archive are installed in the same directory.
Add a separate libghostty-vt-static.pc module for consumers that need
an unambiguous static link. Its `Libs:` entry points directly at the
installed archive so macOS does not resolve the request to the dylib.
Update the Nix packaging to rewrite the new static module into the `dev`
output, use it in the static-link smoke test, and add a compatibility
check that covers both pkg-config entry points.
Add a top-level CMakeLists.txt that wraps `zig build lib-vt` so that
CMake-based downstream projects can consume libghostty-vt without
needing to interact with the Zig build system directly. A custom
command triggers the zig build during `cmake --build`, and the
resulting shared library is exposed as an IMPORTED target.
Downstream projects can pull in the library via FetchContent, which
fetches the source and builds it as part of their own CMake build, or
via find_package after a manual install step. The package config
template in dist/cmake/ sets up the ghostty-vt::ghostty-vt target
with proper include paths and macOS rpath handling.
A c-vt-cmake example demonstrates the FetchContent workflow, creating
a terminal, writing VT sequences, and formatting the output as plain
text. CI is updated to auto-discover and build CMake-based examples
alongside the existing Zig-based ones.
SwiftLint <https://realm.github.io/SwiftLint/> is both a linter and
formatting. It's a popular way to spot issues and enforce a consistent
style.
Our SwiftLint configuration lives in macos/.swiftlint.yml, where is is
automatically discovered. It's very configurable, and I made an initial
pass as some basic, weakly-opinionated rules. The "TODO" section lists
rules that currently have violations but can be easily (auto)fixed in
follow-up commits.
Our integration is CLI-based. Similar to our other support tools, we
expect developers to install `swiftlint` via nix or e.g. Homebrew.
This is documented in HACKING.md.
We also have an optional Xcode integration, for in-editor feedback. When
`swiftlint` is available, it's run as a script-based Build Phase.
SwiftLint supports an auto-fix mode (--fix). Agents are aware of this
via AGENTS.md.
The rules are enforced using a (nix-based) CI job.
As of NixOS/nixpkgs#473413[1], `zig.hook` no longer supports
`zig_default_flags`, and now they can and must be provided in
`zigBuildFlags` instead.
Updating also requires removing gnome-xorg since it has been removed
from nixpkgs.
[1] https://github.com/NixOS/nixpkgs/pull/473413
This makes `ucs-detect` available in our Nix environment so that we can
run tests on our Unicode support. In the future, I'd like to modify our
CI to run this too.
This also adds a `./test/ucs-detect.sh` script that runs `ucs-detect`
with consistent options that match the upstream test styles.
This adds a new script we can manually run that downloads all the files
that need to be uploaded to the mirror and updates our build.zig.zon.
The upload still happens manually [by me] but this simplifies the task
greatly.
This enables agents (namely Amp) to use `/gh-issue <number/url>` to
begin diagnosing a GitHub issue, explaining the problem, and suggesting
a plan of action. This action explicitly prompts the AI to not write
code.
I've used this manually for months with good results, so now I'm
formalizing it in the repo for other contributors.
Example diagnosing #8523:
https://ampcode.com/threads/T-3e26e8cc-83d1-4e3c-9b5e-02d9111909a7
- Builds with Zig 0.15 now (but still works just fine with Zig
0.14 projects).
- Fixes a double-free if nix-prefetch-git can't be found or errors out
- Adds support for generating Flatpak package metadata natively.
GTK dynamically loads librsvg when it needs to convert a SVG-only icon
(or any other SVG-only resource) for display. This PR adds the libraries
that GTK needs so that running programs from within the developer shell
can display those SVG resources.
Add shellcheck to CI pipeline to ensure shell scripts follow best practices
and catch common errors. Fix existing shellcheck warnings in test scripts
to pass the new linting requirements.
Nikolay Bryskin