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bot-bottle/bot_bottle/backend/print_util.py
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feat(backend): remove smolmachines; firecracker is the Linux default
Delete the smolmachines backend (the whole bot_bottle/backend/smolmachines
package and its tests). It had fatal Linux issues (TSI networking under
sustained use, exec-channel contention, no SIGWINCH) and is superseded by
the Firecracker backend (issue #342).

Backend selection now:
- default is macos-container on macOS, firecracker on KVM-capable Linux
  hosts, and docker as the last resort (was smolmachines).
- firecracker is selected on a KVM host even when the `firecracker`
  binary isn't installed, so start routes through its preflight and
  prints an install pointer (same UX as require_container), instead of
  silently falling back. Split is_host_capable() (Linux + KVM) out of
  is_available() (adds the binary check) to drive this.

Retarget the cross-backend tests (parity, print-parity, prepare,
workspace, freezer, selection) from smolmachines to firecracker rather
than dropping the coverage. Remove docker.util.image_id/save, which only
smolmachines used. Update README/AGENTS/example bottles and stale
comments; historical docs/prds are left as a point-in-time record.

BREAKING: BOT_BOTTLE_BACKEND=smolmachines now errors as unknown.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WBMWTEtQdJ4W5UrWuLHCck
2026-07-11 13:24:47 -04:00

41 lines
1.4 KiB
Python

"""Shared print helpers for BottlePlan.print implementations.
Lifts the multi-value label printer out of DockerBottlePlan so every
backend (and any future backend) renders the same two-column
scannable preflight without duplicating the indent math."""
from __future__ import annotations
from typing import Sequence
from ..log import info
def print_multi(label: str, values: Sequence[str]) -> None:
"""Print `label: <value>` with continuation lines indented to
align under the first value. Empty `values` renders `(none)`.
Used by every backend's `BottlePlan.print` for env / skills /
git / egress — one item per line keeps the preflight summary
scannable when an agent has many of any of these."""
if not values:
info(f"{label}: (none)")
return
info(f"{label}: {values[0]}")
indent = " " * (len(label) + 2)
for v in values[1:]:
info(f"{indent}{v}")
def visible_agent_env_names(
env_names: Sequence[str], *, hidden_env_names: frozenset[str],
) -> list[str]:
"""Env names worth showing in launch summaries.
Provider-injected placeholder env vars are implementation details:
they are non-secret dummy values that satisfy provider CLIs while
egress injects the real Authorization header. The plan's
`hidden_env_names` carries exactly which names to suppress.
"""
return sorted({name for name in env_names if name and name not in hidden_env_names})