The unconditional `apt-get update` added to satisfy review on #122 was
fine on the PR runs (~5s) and then sat for six minutes on the first
master push, still in progress when it was cancelled. Nothing was wrong
with the tree; apt was just slow.
That is a bad trade for this job in particular. Its argument for
existing -- and for carrying a push trigger at all -- is that it answers
in seconds, and it was made to depend on a network fetch it does not
normally need. ubuntu-latest ships PyYAML.
So import first and install only if that fails. The dependency is still
handled rather than assumed, which was the point of the review finding,
but a working runner pays nothing for it. `if` rather than
`python3 -c 'import yaml' && exit 0`, because under `bash -e` the latter
fails the step on the branch where the import fails -- exactly when the
install needs to run. Both paths checked under -e.
Also timeout-minutes: 10. The default is six hours, which is how a step
that hangs rather than fails occupies a runner and tells nobody.
The whole job now completes in three seconds, and selects 0 devices
rather than 107 because #122 classified lint.yml as no-build.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
