feat: Headless CLI use #649
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Add --headless flag that accepts defaults for all prompts except URL, enabling automation and CI/CD integration. When --headless is enabled: - URL must be provided via --url (required) - Package name must be auto-detected or provided - Build type uses first auto-detected option - Output path defaults to current directory - Submodule fetching skipped by default - File overwrite protection (errors instead of prompting) Future commits will add flags to customize behavior in headless mode.
Introduce a macro to handle the repetitive pattern of: - Use flag value if provided - Use default value in headless mode - Prompt user in interactive mode Apply the macro to URL handling, replacing the early validation with a more idiomatic error in the default branch. This pattern will be used for all subsequent flag additions.
Add --rev flag to specify the git revision, tag, or commit hash from the command line, making version selection non-interactive. Uses the flag_or_prompt macro to integrate with headless mode, falling back to the default revision in headless mode when not specified.
Add new --pname/-p CLI flag that allows users to specify the package name directly. Refactor pname handling to use flag_or_prompt! macro for consistent behavior between headless and interactive modes.
Add --build flag to specify the build type from the command line, making build system selection non-interactive. Accepts short flag values: go-mod (buildGoModule) python-app (buildPythonApplication) python-pkg (buildPythonPackage) rust-pkg (buildRustPackage) drv (stdenv.mkDerivation) Validates against detected options and provides clear error messages listing available choices. In headless mode without --build, defaults to the first auto-detected build type.
Add --version/-v flag to specify the package version from the command line, allowing users to override auto-detected versions. Uses the flag_or_prompt macro to integrate with headless mode. In headless mode without --version, uses the auto-detected version directly without confirmation.
Add --fetch-submodules flag to explicitly control whether git submodules should be fetched. Behavior: - With --fetch-submodules: Always fetch submodules - Without flag in headless mode: Skip submodules (default) - Without flag in interactive mode: Prompt user
Add --force/-f flag to control file overwrite behavior in headless mode. Behavior: - With --force: Silently overwrite existing files - Without --force in headless mode: Error with helpful message - In interactive mode: Prompt user (--force has no effect) This provides safe defaults while allowing automation when needed.
Replace large pattern matching blocks with centralized methods in BuildType: - Add cli_flag() to get flag name for each build type - Add from_cli_flag() to parse flag string into BuildType - Reduces ~60 lines of repetitive matching to ~15 lines - Improves maintainability for adding new build types - Error messages now automatically filter unavailable options
dhnaranjo
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Add headless mode to nix-init, enabling fully non-interactive package
initialization through CLI flags.
--headlessrequires--url, all other flags use the default value logic from the interactive flow.I'mma be real with you, I am not a Rust guy and I did have heavy LLM involvement in this thing, but I did sit here and write it, no vibe nonsense. I stand by it, but it might not be super idiomatic Rust.
fixes #648
• --headless - Enable non-interactive mode (requires --url)
• --rev - Specify git revision, tag, or commit hash
• --version-name - Specify package version
• --pname - Specify package name
• --build - Specify build type (go-mod, python-app, python-pkg, rust-pkg, drv)
• --fetch-submodules - Control submodule fetching (defaults to false in headless mode)
• --force - Allow overwriting existing output files in headless mode