pflag
koanf
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pflag | koanf | |
---|---|---|
13 | 12 | |
2,293 | 2,303 | |
- | - | |
0.0 | 7.1 | |
17 days ago | 14 days ago | |
Go | Go | |
BSD 3-clause "New" or "Revised" License | MIT License |
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pflag
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issue with pflag flagset
Just the bonus question: did I miss some hints when checking the https://github.com/spf13/pflag readme or the use case of FlagSet is indeed to just be used by cobra CLIs in subcommand only and not directly?
My understanding is that you can use pflag as a drop in replacement of the standard lib's flag (import flag "github.com/spf13/pflag"). So it can be used as a standalone lib I suppose.
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Which packages do you recommend for building cli tools?
I realy enjoyed the patched version from spf13 with "--" support https://github.com/spf13/pflag
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Define custom command-line flag types in Go 1.19
Nice, but Cobra (with pflag underneath) is so, so better.
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-h --help -help help --? -? ????
Not by default on stdlib. There are libraries available though - https://github.com/spf13/pflag
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Coral, a friendly Cobra fork with nearly all its features, but only 4 dependencies
Flag functionality is provided by the pflag library, a fork of the flag standard library which maintains the same interface while adding POSIX compliance.
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The flag package: strange but good?
spf13 has a drop in pflag that does the - short and -- long flags.
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What are your favorite packages to use?
oklog/ulid to generate IDs. coreos/go-oidc for validating JWTs I get from auth. google/go-cmp for comparing structs in tests (unless the project is already using Testify). spf13/pflag because life's too short for Go's flag handling. getkin/kin-openapi for validating reqests/responses against my OpenAPI spec (in tests).
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akamensky/argparse: Argparse for Golang. Just because "flag" sucks!
What are the benefits of this package over the widely used spf13/pflag?
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Go’s highly modular nature makes it particularly good for situations where requirements are changing or evolving.
3
koanf
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App init and graceful watch lib recommendations ?
For configuration, I like Koanf.
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Two ways to provide configuration: command-line, yaml file.
Of course. You should always use a good config package. caarlos0/env is okay but https://github.com/knadh/koanf is a better all around solution imo.
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Golang equivalent of Python’s click (CLT framework)
You can also use Viper with urfave/cli, or you can replace Viper with knadh/koanf, which I personally prefer.
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Viper – Go Configuration with Fangs
Use viper with care. It has some dangerous fundamental flaws [1]. We got bitten hard, submitted a PR [2] and followed up for a year and a half to no avail, before I went ahead and reinvented the wheel and wrote koanf (plug), specifically to avoid viper's flaws.
Most importantly:
- Breaks JSON, YAML, TOML etc. language specs by forcibly lowercasing all keys internally. Dangerous because it can silently merge differently cased config keys into lowercase.
- Hard codes big unnecessary dependencies into the core, significantly bloating build sizes. No separation or abstraction.
- What are some good open source project to read when learning Go?
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Coral, a friendly Cobra fork with nearly all its features, but only 4 dependencies
Came across this the other day https://github.com/knadh/koanf as an alternative to Viper.
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What are your favorite packages to use?
https://github.com/knadh/koanf for config management. Readme contains why it's a good alternative to viper.
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Is Viper necessary if my app is only using environment variables?
I use Koanf, much simpeler with the same options https://github.com/knadh/koanf
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I've been using "caarlos0/env" for nearly 4 years? Anything better?
Personally I like: https://github.com/knadh/koanf
What are some alternatives?
viper - Go configuration with fangs
flag - Flag is a simple but powerful command line option parsing library for Go support infinite level subcommand
cobra - A Commander for modern Go CLI interactions
kingpin - CONTRIBUTIONS ONLY: A Go (golang) command line and flag parser
go-flags - go command line option parser
config - JSON or YAML configuration wrapper with convenient access methods.
konfig - Composable, observable and performant config handling for Go for the distributed processing era
cleanenv - ✨Clean and minimalistic environment configuration reader for Golang
kelseyhightower/envconfig - Golang library for managing configuration data from environment variables
go-simple-config - open source for accessing and storing configuration
go-ini - Go package that encodes and decodes INI-files
complete - bash completion written in go + bash completion for go command