The Nix build now runs the installed-binary facet of the packaging tier
against the binary it has just produced, via an `installCheckPhase` that
sets `GITEA_AXI_INSTALLED_BIN` to `$out/bin/gitea-axi` and runs the new
`test:installed` script. Running after `fixupPhase` means the binary
under test is the wrapped one an operator actually gets, and naming it is
all the phase does — the assertions stay in the shared tier, so the npm
and Nix installation paths cannot drift apart in what they guarantee.
`npmInstallHook` prunes dev dependencies out of the build tree before the
check runs, so `preInstall` snapshots `node_modules` with `cp -al` and the
check restores it by copying, leaving the snapshot intact for a replayed
phase.
Two defects fixed in passing, both surfaced by review:
`test:installed` pins a test file by path while the packaging runner sets
`passWithNoTests: true`, so moving that file would have taken the build
green having asserted nothing — the same silently-inert trap `doCheck`
sprang in task 0037. The script now passes `--passWithNoTests=false`.
`checkPhase`'s vitest left a timestamped run cache under
`node_modules/.vite`, which `npmInstallHook` copied into `$out`, shipping
a stray cache and making the derivation non-reproducible. It is now
removed before the install phase; `nix build --rebuild` passes.
alexion
82cdad4ce0