Brew upgrade ignores install --ignore-dependencies option

[mirfilip]

The help section of brew upgrade says:

Options for the install command are also valid here.

One of the brew install options is:

If --ignore-dependencies is passed, skip installing any dependencies of
any kind. If they are not already present, the formula will probably fail
to install.

I wanted to use this option so that brew upgrade <package> doesn't install deps I skipped when originally installing the package.

This seems not to work:

$ brew upgrade --ignore-dependencies composer
==> Upgrading 1 outdated package, with result:
homebrew/php/composer 1.4.1
==> Upgrading homebrew/php/composer
==> Installing dependencies for homebrew/php/composer: php70
==> Installing homebrew/php/composer dependency: php70
==> Downloading https://homebrew.bintray.com/bottles-php/php70-7.0.15_8.sierra.bottle.tar.gz
(...)

php70 is a dependency of composer but I maintain my own php and don't want to install any other.

I'm almost sure I've done that before and it worked as expected.

HOMEBREW_VERSION: 1.1.11
ORIGIN: https://github.com/Homebrew/brew
HEAD: 394f9fa0aaa5854aa52bc589708a079665dcf462
Last commit: 9 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: acd630df256446f20819f29aec6d570f93b712c2
Core tap last commit: 3 hours ago
HOMEBREW_PREFIX: /usr/local
HOMEBREW_REPOSITORY: /usr/local/Homebrew
HOMEBREW_CELLAR: /usr/local/Cellar
HOMEBREW_BOTTLE_DOMAIN: https://homebrew.bintray.com
CPU: octa-core 64-bit haswell
Homebrew Ruby: 2.0.0-p648
Clang: 8.0 build 800
Git: 2.11.1 => /usr/local/bin/git
Perl: /usr/local/bin/perl => /usr/local/Cellar/perl/5.24.0_1/bin/perl
Python: /usr/local/bin/python => /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/bin/python2.7
Ruby: /Users/me/.rbenv/shims/ruby => /Users/me/.rbenv/versions/2.3.3/bin/ruby
Java: 1.8.0_112, 1.7.0_80
macOS: 10.12.3-x86_64
Xcode: 8.2.1
CLT: 8.2.0.0.1.1480973914
X11: N/A

[MikeMcQuaid]

php70 is a dependency of composer but I maintain my own php and don't want to install any other.

We don't support this use-case, I'm afraid. You'll need to consider forking the composer formula too. Similarly although this flag isn't working as expected it's a bit of a hack so fixing it for this case is low enough priority to be effectively a WONTFIX. Sorry!

[mirfilip]

Wait, but you do for brew install.

I just uninstalled composer and did brew install --ignore-dependencies composer and it installed without php70 so this is very much handled already. Do I understand you correctly that --ignore-dependencies for install is a hack or you mean --ignore-dependencies for upgrade?

If you insist it's a hack rather than a feature then - ok. At least, I would amend the upgrade docs to state so. I can do it.

EDIT: Pardon me for hijacking this with another question. If a tool is a dependency (php70 in my case), could brew omit it if which <tool> finds it in $PATH in any version?

[moll]

I stumbled upon the same issue. Wanted to upgrade cabal-install, but since a new patch version of GHC (v8.0.2 vs my v8.0.1) had come out. Homebrew "helpfully" forces to install GHC v8.0.2, but compiling GHC is a 4–6 hour operation on my comp and I just don't have the time right now. You can't do brew install cabal-install --ignore-dependencies either because it notices it's already installed. Having --ignore-dependencies on brew upgrade would solve this.

[ilovezfs]

@moll

You can't do brew install cabal-install --ignore-dependencies either because it notices it's already installed. Having --ignore-dependencies on brew upgrade would solve this.

brew unlink cabal-install
brew install cabal-install --ignore-dependencies

will do what you want.