Replace the busted-based Lua test runner with a repo-local harness.
The new harness runs spec files directly under `nvim -ll`, ships its own
reporter and lightweight `luassert` shim, and keeps the helper/preload
flow used by the functional and unit test suites.
Keep the file boundary model shallow and busted-like by restoring `_G`,
`package.loaded`, `package.preload`, `arg`, and the process environment
between files, without carrying extra reset APIs or custom assertion
machinery.
Update the build and test entrypoints to use the new runner, add
black-box coverage for the harness itself, and drop the bundled
busted/luacheck dependency path.
AI-assisted: Codex
These were disabled as they failed when tested with cross-compiling,
but it works fine for windows natively on ci, so let's use that.
mac os builds after disabling debug info, which currently
triggers a bug in zig's MachO linker: natecraddock/ziglua#191
Tracking issue: https://codeberg.org/ziglang/zig/issues/30669
Unfortunately actually using the JIT of luajit still triggers
issues on mac os, so we cannot use it yet.
Also sync luajit version used via ziglua to a recent one
like we use in cmake, see natecraddock/ziglua#196
Problem:
build.zig always downloads dependencies and statically links them,
which is frowned upon by distro packagers.
Solution:
Add option to use system libraries.
compile time features are hot again.
Note: this changes the &term value for builtin definition from
'builtin_xterm' to just 'xterm'. It's an xterm regardless of we use an
external definition or an internal. Prior to this commit the vast
majority of POSIX users will have used external terminfo, so plugins and
scripts are only going to have checked for &term == 'xterm' or 'tmux' or
whatever.
The status of external loading is still available in "nvim -V3" output.
- Bump zig version to 0.15.1 and workaround zig fetch hang (ziglang/zig#24916)
- add mac os zig build (currently without luajit, linker failure)
- Add windows zig build, currently with very limited testing
Tested using cross-compiling from linux:
zig build -Dcross=true -Dtarget=x86_64-windows nvim_bin
Note: not fully functional without a runtime, which still has to be
fuddled with manually
Macos and windows builds require a recent zig 0.15+dev version
As this zig master branch is currently too much in flux, we can't make
our CI depend on zig master.
Revisit CI after zig 0.15 release or at least feature freeze.
