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zeekayandHanzo Dev
3e5f509c69
The contract was written down twice — zip declares Module and Loader, and the loader beside base's runners declared its own copy. Structural typing was the only thing keeping them equal, which is a property nobody can see and a compiler will not check. This implements zip's. The loader, the manifest and the runners live here so cloud can stop carrying a second goja runtime of its own — a shim, a bundler and a third registry that answered the same question this one does. native, goja, wazero and pyvm. wazero is the reason this is not a list of four languages: anything compiled to WebAssembly ahead of time arrives without a new runner, and Rust walks through that door rather than getting one built for it. pyvm is real CPython through cgo with PEP 684 sub-interpreters, behind a build tag, because embedding the language beats reimplementing a subset of it. Its one dependency on base was a single call for an unguessable string, which crypto/rand says directly. Co-authored-by: Hanzo Dev <[email protected]>
49 lines
1.7 KiB
Go
49 lines
1.7 KiB
Go
//go:build !pyvm
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// +build !pyvm
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// Package pyvm is the CPython (cgo) extension runtime for Base.
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//
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// The real implementation lives behind the `pyvm` build tag because it
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// links libpython at the C level and requires Python 3.12+ development
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// headers (pkg-config python-3.13-embed or python-3.12-embed). Default
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// base builds compile without it — this stub is what gets linked in
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// normally so `NewRuntime()` is always callable, only the engine is
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// opt-in via `go build -tags pyvm`.
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package pyvm
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import (
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"context"
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"fmt"
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"github.com/hanzoai/plugin/extruntime"
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)
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// NewRuntime returns a CPython-shaped runtime that errors at Load time
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// when the binary was built without the `pyvm` build tag. Name() and
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// Capabilities() still report the pyvm identity so callers can detect
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// the runtime is present-but-unavailable rather than missing entirely.
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func NewRuntime() extruntime.Runtime { return &stubRuntime{} }
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type stubRuntime struct{}
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func (*stubRuntime) Name() string { return "pyvm" }
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func (*stubRuntime) Capabilities() extruntime.Capabilities {
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return extruntime.Capabilities{
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AcceptsLanguages: []string{"py"},
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// HardSandbox=false: cgo CPython shares the host process. A C
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// extension segfault kills the whole Go binary. Use wazero +
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// RustPython if you need a sandboxed Python.
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HardSandbox: false,
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Cgo: true,
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// HONEST: pyvm cannot hard-abort a running invocation. See README.
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SupportsAbort: false,
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}
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}
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func (*stubRuntime) Load(_ context.Context, _ string) (extruntime.Module, error) {
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return nil, fmt.Errorf("%w: built without -tags pyvm (cgo CPython disabled)", extruntime.ErrUnsupported)
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}
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func (*stubRuntime) Close() error { return nil }
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