Question 1

Clir or Cobra: which is better for a Go CLI project?

Accepted Answer

Clir is ideal for simple, dependency-free tools with a clean API, while Cobra offers more features like Viper integration and a larger ecosystem. Choose Clir for minimalism and Cobra for comprehensive functionality out of the box.

Question 2

How to add custom validation to flags in Clir?

Accepted Answer

Clir doesn't have built-in validation; you need to implement it in the action function. After flag parsing, check values and return errors if validation fails, as shown in the example error handling.

Question 3

Does Clir support environment variables?

Accepted Answer

No, Clir focuses on command-line flags and positional arguments. For environment variables, you'll need to handle them separately using Go's os package or similar standard library tools.

Question 4

Can I use Clir for multi-command tools with shared flags?

Accepted Answer

Yes, Clir supports nested subcommands, allowing you to create parent commands with shared flags that propagate to child commands, enabling reusable configurations across commands.

Question 5

Is Clir suitable for large-scale CLI applications?

Accepted Answer

Clir can handle large applications with nested subcommands, but its simplicity might require more boilerplate code for complex logic, such as validation or advanced help formatting, compared to libraries with more built-in features.

Question 6

How does Clir handle positional arguments in commands?

Accepted Answer

Clir supports positional arguments through its API, allowing you to define them alongside flags in the command structure, similar to how the standard library flag package works but with enhanced syntax.

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