The default dev shell exports CARGO_BUILD_TARGET=x86_64-pc-windows-msvc for the Windows cross
build. The native and the KDE checks run `cargo test` through `nix shell nixpkgs#gcc`, which is
not a dev shell and keeps the environment it was started from, so run from inside `nix develop`
they built their test programs for Windows and failed with "cannot execute binary file" (exit
126), the failure the recorder step of the macOS job had in CI.
Both lines now drop the variable. The macOS check names its target and the Windows check wants
the variable, so they stay as they were. With the variable exported, the native line fails with
126 before and passes (139, 8, 14, 20 and 16 tests) after.
fast-check classifies the paths of the final directories (komorebi-linux, komorebi-macos,
komorebi-hotkeys, nix/{windows,linux,macos}, docs and schemas per platform), runs the Linux
check from the repository root and evaluates one check and one package per platform in the
root flake; kde-closure-check reads nix/linux/root-crates.json and compares it with the cargo
tree of the Linux packages (the listed crates besides komorebi-linux, komorebi-hotkeys and
komorebi-daemon); mac-check.sh drops the nested-workspace branch; e2e-needed treats nix/windows,
nix/workspace-src.nix, nix/lib.nix and nix/common.nix as fixed inputs of the Windows binaries
and the Linux and macOS trees as outside them; build-ref.sh builds `windows-NAME` for a REF with
the one-flake layout and keeps the old names for an older REF with its own flake. The justfile
names linux-nix-options-validation and runs a VM suite as legacyPackages.<system>.vm.NAME
(the vm-* checks are heavyChecks for now). scripts/linux/{run-kde,vm-mac,sync-e2e-core,
scenario-status} find the repository root and the VM library from scripts/linux/ and nix/linux/
(on the rebase onto wip-cutover-all the coordinator versions of run-kde, vm-mac and
scenario-status were kept: same change).
Not touched: scripts/linux/compare-gen.py, a migration comparison between the three old trees
that still looks for komorebi-for-mac/ (obsolete; open).
Verified: bash -n on the changed scripts; tools/kde-closure-check passes (14 root crates);
tools/fast-check --list classifies this revision as nix-only. fast-check commands for the
platforms were not run.
tools/README.md describes each tool, the tiered loops of fast-check (tier 1 cargo check and
unit tests of the edited tree, tier 2 other-platform type-check or clippy, nix builds as the
pre-landing gate), the prerequisites (jj, nix develop, jq, flock) and how the fake C compiler
works for the macOS type-check. The measured warm times come from the host README and are dated
2026-10-31 (revision c89651fa). Personal progress-log and scratchpad references are removed.
docs/dev/build-and-test.md gets a "Developer tools" section and links to tools/ where it named
fast-check, kde-closure-check and the fake-CC command (the macOS block now says
`tools/mac-check.sh`).
Verified: links and commands read against the committed scripts; nothing else run.
LGUG2Z