Installation from brew tap does not work with all the "without" flags set

[rauerhans]

Summary

Installation from brew tap does not work with all the "without" flags.

Reproduction

❮ brew install pluralsh/plural/plural --without-helm --without-terraform --without-kubectl
==> Cloning https://github.com/pluralsh/plural-cli.git
Updating /Users/hans.rauer/Library/Caches/Homebrew/plural--git
origin/HEAD set to master
refs/remotes/origin/master
==> Checking out revision c5c67e90d1bf3ddb0dc61c6ef8523cba91f2fa10
HEAD is now at c5c67e9 sort terraform before building outputs for stability
HEAD is now at c5c67e9 sort terraform before building outputs for stability
==> Installing plural from pluralsh/plural
==> helm plugin install https://github.com/pluralsh/helm-push
Last 15 lines from /Users/hans.rauer/Library/Logs/Homebrew/plural/01.helm:
2022-03-15 08:50:34 +0000

helm
plugin
install
https://github.com/pluralsh/helm-push


If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
  https://github.com/pluralsh/homebrew-plural/issues

Additional Info about Your Environment

❯ system_profiler SPSoftwareDataType
Software:

    System Software Overview:

      System Version: macOS 12.2.1 (21D62)
      Kernel Version: Darwin 21.3.0
      Boot Volume: Macintosh HD
      Boot Mode: Normal
      Computer Name: AT-NB-314
      User Name: Hans Rauer (hans.rauer)
      Secure Virtual Memory: Enabled
      System Integrity Protection: Enabled
      Time since boot: 2 days 19:06

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Message from the maintainers:

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[michaeljguarino]

It looks like your system didn't have helm already, so it choked when trying to install helm plugins. My guess is it probably would work if the --without-helm flag were removed or you installed helm via another method

[rauerhans]

Definitely had all three installed