Let Server start the engine without a config file - #220
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Server(config=None) spawns the engine with no --config at all: built-in defaults, no databases — what a converter or upload-driven script wants. Needs an engine >= v0.9.3, which learned to run config-less. Two silent failure modes die with it. A config path that does not exist now fails loudly at start() instead of the engine dying behind the scenes — the docstring used to claim "missing file is tolerated" while the spawned engine refused it. And an engine that exits before serving (the likeliest config-less cause: an engine too old) fails immediately with its exit code and a version hint, instead of hanging until the readiness timeout. Verified against a locally built v0.9.3: Server(config=None, port="auto") boots, answers /version with wire 3, and lists the uploads it rediscovers from the shared data dir.
The exit-code and version-hint diagnostic only fired in the fixed-port readiness loop. In dynamic-port mode — the canonical config-less invocation — a dying engine still raised the opaque "exited before reporting its bound port", with no exit code and no hint. One shared error builder now serves both paths.
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Server(config=None)spawns the engine with no--configat all: built-in defaults, no databases — what a converter or upload-driven script wants. Needs an engine >= v0.9.3, which learned to run config-less (#211).Two silent failure modes die with it. A config path that does not exist now fails loudly at
start()instead of the engine dying behind the scenes — the docstring used to claim "missing file is tolerated" while the spawned engine refused it. And an engine that exits before serving (the likeliest config-less cause: an engine too old) fails immediately with its exit code and a version hint, instead of hanging until the readiness timeout.Verified end-to-end against a locally built v0.9.3:
Server(config=None, port="auto")boots, answers/versionwith wire 3, and lists the uploads it rediscovers from the shared data dir. 233 tests green (4 new).