import type { DreamuxEnvironment } from '@excitedjs/dreamux-types';
/**
 * Final codex binary path for one runtime. The `CODEX_HOST_CODEX_BIN`
 * environment variable is a deliberate host-level override that takes precedence
 * over the configured `runtime.config.bin`; otherwise the configured bin
 * (default `"codex"`) is used. `env` defaults to the live process environment
 * for the runtime spawn path; doctor passes the installed service unit's
 * environment so it checks what the service will run.
 *
 * Lives in its own module so both the provider (spawn path) and the diagnostic
 * (doctor path) import it without forming an import cycle.
 */
export declare function resolveCodexBinPath(configBin: string, env?: DreamuxEnvironment): string;
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