Output information on snap/brew install about circleci-cli HOT 3 CLOSED

@felicianotech This info is available in the Homebrew version if the user runs circleci update:

$ circleci update
`update` is not available because this tool was installed using `homebrew`.
Please consult the package manager's documentation on how to update the CLI.

I'm not sure about snap, as I don't have access to a Linux machine, but it looks like this code is abstracted over the package manager:

The Homebrew version also has different help text for update. When running circleci with no arguments, it prints:

Available Commands:
  config      Operate on build config files
  diagnostic  Check the status of your CircleCI CLI.
  help        Help about any command
  local       Debug jobs on the local machine
  namespace   Operate on namespaces
  orb         Operate on orbs
  query       Query the CircleCI GraphQL API.
  setup       Setup the CLI with your credentials
  update      This command is unavailable on your platform
  version     Display version information

It seems pretty simple to tweak the output here if that's insufficient. What do you think about the current state?

from circleci-cli.

Looks like Homebrew is suppose to be detected with PackageManager is set to homebrew during build time. Problem is, I can't find where that is done. GoReleaser sets it to release.

from circleci-cli.

This is currently already a feature when you run circleci version in the latest version of the cli!

from circleci-cli.