b4d5092d3f
`activate` doubled as the thing scripts sourced non-interactively, so it carried `--` argument guards and every caller had to tolerate its prompt and `hermes` function. Composition (setup sync, bootstrap Python, pm env) now lives in scripts/_activation.sh, and there are two consumers: - `activate`: interactive, reversible (`deactivate`). - new `scripts/run-in-hermes-env CMD...`: applies the env to one process and execs into it. Replaces `scripts/_hermes-python`; every Python script's shebang and `scripts/run_tests.sh` (which re-executes itself under it, however it was launched) use it. `pm.environments --format sh` emits the env as shell exports, so the inline JSON-to-export Python is gone from `activate`. An install that did not build the test environment now reads as stale for every consumer. Tests are split along the same seams: activation support fixtures, bash/ps1 activation, env-script quoting, and the runner's staleness.
33 lines
1.4 KiB
Bash
Executable File
33 lines
1.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Run a command in the Hermes dev environment, whatever shell or cwd it is
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# launched from: `scripts/run-in-hermes-env CMD [ARGS...]`.
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#
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# The environment is the one `activate` would give a shell, applied to this
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# process only and then exec'd into CMD, so nothing leaks back and nothing has
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# to be sourced or deactivated. It is synced first when there is none to
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# inherit or the inherited one no longer matches its inputs
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# (scripts/_activation.sh).
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#
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# Shebang for repo Python scripts, so `./scripts/foo.py` works from any cwd:
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# #!/usr/bin/env -S bash -c 'exec "$BASH" "$(dirname "$0")/run-in-hermes-env" python3 "$0" "$@"'
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# The kernel appends the invoking script, and `bash -c` binds it to `$0`, so
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# the shebang finds this file relative to the script and is independent of the
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# cwd. `$BASH` for the second hop keeps it free of both the exec bit and a
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# `PATH` lookup. The line must stay under 127 bytes, and `env -S` is GNU and
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# newer-BSD; verify it if an older macOS or BSD is a target.
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# macOS's stock bash 3.2 compares mtimes in whole seconds, so an input rewritten
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# within the same second as its recorded stamp goes unnoticed there.
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set -u
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if [ "$#" -eq 0 ]; then
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printf 'usage: %s CMD [ARGS...]\n' "$0" >&2
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exit 2
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fi
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_here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck source=scripts/_activation.sh
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. "$_here/_activation.sh"
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hermes_ensure_env "$(dirname "$_here")" || exit 1
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exec "$@"
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