`brew upgrade elang --dry-run` list of actions is incomplete

[JonRowe]

• ran brew update and can still reproduce the problem?
• ran brew doctor, fixed all issues and can still reproduce the problem?
• ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

brew upgrade erlang --dry-run

To see what upgrading erlang would do before ugprading it.

What happened (include command output)

brew upgrade erlang --dry-run

Indicated it would upgrade erlang to OTP 22.2 as expected.

brew upgrade erlang

Then upgraded erlang and elixir. (From 1.9.1 to 1.9.4).

What you expected to happen

I expected brew upgrade erlang --dry-run to output a complete list of packages it would upgrade.

Output of brew config and brew doctor commands

brew config

HOMEBREW_VERSION: 2.2.2-32-g53bb918-dirty
ORIGIN: https://github.com/Homebrew/brew.git
HEAD: 53bb918565b4ec545d66403a0aa763dc11e76f5f
Last commit: 2 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: 6fcb18732bc4bd8a2c2d33569f66767d9286f41b
Core tap last commit: 2 days ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_BREW_GIT_REMOTE: https://github.com/Homebrew/brew
HOMEBREW_CORE_GIT_REMOTE: https://github.com/Homebrew/homebrew-core
HOMEBREW_DEV_CMD_RUN: 1
HOMEBREW_NO_ANALYTICS_THIS_RUN: 1
CPU: octa-core 64-bit haswell
Homebrew Ruby: 2.6.3 => /usr/local/Homebrew/Library/Homebrew/vendor/portable-ruby/2.6.3/bin/ruby
Clang: 11.0 build 1100
Git: 2.24.1 => /usr/local/bin/git
Curl: 7.54.0 => /usr/bin/curl
Java: 1.8.0_51
macOS: 10.14.6-x86_64
CLT: 10.3.0.0.1.1562985497
Xcode: 11.3
XQuartz: 2.7.8 => /opt/X11
  

brew doctor

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Warning: Some installed formulae are not readable:

qt@5.5: unknown version :mountain_lion
phantomjs: uninitialized constant #Class:0x00007ffc91ca4dc0::MinimumMacOSRequirement
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Warning: Your XQuartz (2.7.8) is outdated.

Please install XQuartz 2.7.11 (or delete the current version).

XQuartz can be updated using Homebrew Cask by running:

brew cask reinstall xquartz

[MikeMcQuaid]

elixir. (From 1.9.1 to 1.9.4).

This was upgraded as otherwise it would have been broken by the Erlang upgrade.

[JonRowe]

This was upgraded as otherwise it would have been broken by the Erlang upgrade.

The issue is that --dry-run did not inform me that it was needed, --dry-run should mention elixir will be upgraded.

[MikeMcQuaid]

I've opened #6885 to tweak this behaviour. Note the list cannot be fully complete (and prints a warning accordingly) because we do not know what will result in broken linkage after an upgrade. This will print a more complete list than currently, however, and will handle your case.

[JonRowe]

Might you consider also warning about packages that may be upgraded if they are broken? I'm not sure if #6885 does that too?

[MikeMcQuaid]

It does.