Add first-run hints, init --config, and verbose flag support#6
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- Default log level drops to WARN so `anvil env <pkg> --export | eval` doesn't dump "Loaded N packages" and similar info logs to stderr. Add a global `-v` (info) / `-vv` (debug) flag; `RUST_LOG` still wins. - `anvil list` now prints a hint when no packages are visible, telling the user whether the config is missing, has no `package_paths`, or whether the configured paths don't exist on disk. - New `anvil init --config` scaffolds a commented `~/.anvil.yaml` template so first-time users have something to edit. - `anvil info <name>` surfaces all available versions when there's more than one on disk — covers the resolver-1.yaml / resolver-2.yaml case where filenames diverge from the package name. - README: install hint about `~/.cargo/bin` on PATH, expanded section on multi-token command aliases, mention of `anvil init --config`, and a note that anvil is quiet by default with `-v` for verbose. https://claude.ai/code/session_0147nsxp1EPFDBeeT3rCyTNc
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Summary
This PR improves the first-time user experience by adding helpful diagnostics when packages aren't found, scaffolding a starter global config file, and implementing a verbose flag for controlling log output.
Key Changes
First-run hints: When
anvil listfinds no packages, emit contextual hints to stderr suggestinganvil init --configor checkingANVIL_PACKAGESenvironment variable. AddedConfig::first_run_hint()to diagnose common configuration issues.anvil init --config: New subcommand to scaffold~/.anvil.yamlwith a commented template including examplepackage_paths, aliases, and filters. Refuses to overwrite existing config files.Verbose flag (
-v,-vv): Global-v/--verboseflag that steps up log levels from warn (default) → info → debug.RUST_LOGenvironment variable still takes precedence. Default quiet behavior prevents info logs from polluting stderr in piped contexts likeeval "$(anvil env ...)".anvil infoimprovements: When multiple versions of a package exist (e.g.,resolver-1.yaml,resolver-2.yaml), display all available versions so users aren't surprised by silent version selection.CLI updates: Made
Initcommand'snameparameter optional (required only when not using--config), added--configflag with proper conflict handling.Documentation: Updated README with quick-start instructions for
anvil init --config, clarifiedcommandsmap behavior with examples, and documented environment variables and log verbosity control.Implementation Details
RUST_LOG.Config::first_run_hint()returnsNonewhen at least one package path exists, avoiding noise in normal operation.init --configtemplate includes helpful comments and examples for common use cases (aliases, filters, shell selection).https://claude.ai/code/session_0147nsxp1EPFDBeeT3rCyTNc