• [x] Have you followed the guidelines for contributing?
• [x] Have you checked that there aren't other open pull requests for the same formula update/change?
• [ ] Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• [ ] Is your test running fine brew test <formula>, where <formula> is the name of the formula you're submitting?
• [ ] Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?
• [ ] Have you included the output of brew gist-logs <formula> of the build failure if your PR fixes a build failure. Please quote the exact error message.

depends_on "attr" if OS.linux? is not needed since there is already this:

on_linux do
  depends_on "attr"
end

I'm definitely in favor of doing something like this. Tbh I still don't really understand why Formulary is called Formulary 😅

I'm torn about using keg-only vs unlinked. I think there's still a slight distinction between the two. keg-only means "unlinked by default" while unlinked, to me, just means "not linked due to either being keg-only or manually unlinking". So even if the terminology keg-only is dropped (which I would be fine with), I think it's still good to have that distinction.

Also, if keg-only is dropped, I think I'd push to deprecate and rename the keg_only formula DSL.

To me, the weird thing about Formula and Cask are that I see them as similar types of "things" (i.e. software) but their names don't quite fit the same analogy. To me, Formula makes me think "recipe for some software", so it seems like it should refer to the formula definition (i.e. the file). Cask, on the other hand, feels like a more physical object (i.e. the actual "finished product") seemingly referring to the installed application.

Documentation/messaging-wise, I think we can certainly use terms like "installed formula", "formula definition", "installed cask", and "cask definition" to help eliminate potential confusion. I don't think major code changes that rename classes and stuff are necessarily a good idea, though.

End of important stuff, no need to keep reading. I wrote the following and then realized it's not really useful to us unless we decide to re-make Homebrew and change a whole bunch of stuff, but figured I'd leave it in just because.

I guess if I were making Homebrew from scratch and needed to follow the beer theme, I'd make Formula refer to any software definition. Cask would then be a type of Formula that installs native apps, and something else would also be a type of Formula that refers to the software in the homebrew/homebrew-core repo. I'm not going to bother researching beer-related things to figure out what that should be, though, because it doesn't matter.

Bumps ffi from 1.14.2 to 1.15.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ffi/ffi/blob/master/CHANGELOG.md">ffi's changelog</a>.</em></p> <blockquote> <h2>1.15.0 / 2021-03-05</h2> <p>Fixed:</p> <ul> <li>Fix MSVC build</li> <li>Fix async callbacks in conjunction with fork(). <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/884">#884</a></li> </ul> <p>Added:</p> <ul> <li>Allow to pass callbacks in varargs. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/885">#885</a></li> <li>Name the threads for FFI callback dispatcher and async thread calls for easier debugging. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/883">#883</a> The name can be retrieved by Thread.name and is shown by Thread.list.inspect etc. Even gdb shows the thread name on supported operating systems.</li> <li>Add types.conf for powerpc64le-linux</li> <li>Add types.conf for riscv64-linux</li> <li>More release automation of ffi gems</li> </ul> <p>Changed:</p> <ul> <li>Switch from rubygems-tasks to bundler/gem_helper</li> </ul> <p>Removed:</p> <ul> <li>Remove unused VariadicInvoker#init</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/ffi/ffi/commit/1fb309c728bf5680c01b3781cbadea85cc6cf53b"><code>1fb309c</code></a> Use platform name as used by rubygems</li> <li><a href="https://github.com/ffi/ffi/commit/05537c72095ced1915c0458de39a4171915d04f8"><code>05537c7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/888">#888</a> from larskanis/async-callback-with-fork</li> <li><a href="https://github.com/ffi/ffi/commit/df39cc6b5ece580e8e8f5d0964f32b23e8d80796"><code>df39cc6</code></a> Fix async callbacks in conjunction with fork()</li> <li><a href="https://github.com/ffi/ffi/commit/ea13267c876f28e475c04cb38d645d9fb563b557"><code>ea13267</code></a> Prepare ffi-1.15.0</li> <li><a href="https://github.com/ffi/ffi/commit/1a87af07cb6e52762f1e3316f5c956bc7538e649"><code>1a87af0</code></a> Replace rubygems-tasks by bundler and do more release automation</li> <li><a href="https://github.com/ffi/ffi/commit/334c3afbd30df768974b9a228847fda027643c7d"><code>334c3af</code></a> Use shorter thread names for FFI's callbacks</li> <li><a href="https://github.com/ffi/ffi/commit/1cce06db0b774ee46ef98ea9ca6ceec5d21694a4"><code>1cce06d</code></a> Merge branch 'name-dispatcher-thread' of <a href="https://github.com/DataDog/ffi">https://github.com/DataDog/ffi</a> into ...</li> <li><a href="https://github.com/ffi/ffi/commit/c48dfe79c772074d6afc9dfa85fbf8f58a27b860"><code>c48dfe7</code></a> Implement async callback test on Windows and improve async specs</li> <li><a href="https://github.com/ffi/ffi/commit/6d14c0a9107c0d5febb3bf92a60d2581e768fa2f"><code>6d14c0a</code></a> Separate double callback spec and variadic call with function pointer</li> <li><a href="https://github.com/ffi/ffi/commit/57bcc6074ad45a52e4d93d3ef56af0105b0dcb26"><code>57bcc60</code></a> Remove unused VariadicInvoker#init</li> <li>Additional commits viewable in <a href="https://github.com/ffi/ffi/compare/1.14.2...v1.15.0">compare view</a></li> </ul> </details> <br />

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Bumps ffi from 1.14.2 to 1.15.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ffi/ffi/blob/master/CHANGELOG.md">ffi's changelog</a>.</em></p> <blockquote> <h2>1.15.0 / 2021-03-05</h2> <p>Fixed:</p> <ul> <li>Fix MSVC build</li> <li>Fix async callbacks in conjunction with fork(). <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/884">#884</a></li> </ul> <p>Added:</p> <ul> <li>Allow to pass callbacks in varargs. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/885">#885</a></li> <li>Name the threads for FFI callback dispatcher and async thread calls for easier debugging. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/883">#883</a> The name can be retrieved by Thread.name and is shown by Thread.list.inspect etc. Even gdb shows the thread name on supported operating systems.</li> <li>Add types.conf for powerpc64le-linux</li> <li>Add types.conf for riscv64-linux</li> <li>More release automation of ffi gems</li> </ul> <p>Changed:</p> <ul> <li>Switch from rubygems-tasks to bundler/gem_helper</li> </ul> <p>Removed:</p> <ul> <li>Remove unused VariadicInvoker#init</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/ffi/ffi/commit/1fb309c728bf5680c01b3781cbadea85cc6cf53b"><code>1fb309c</code></a> Use platform name as used by rubygems</li> <li><a href="https://github.com/ffi/ffi/commit/05537c72095ced1915c0458de39a4171915d04f8"><code>05537c7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/888">#888</a> from larskanis/async-callback-with-fork</li> <li><a href="https://github.com/ffi/ffi/commit/df39cc6b5ece580e8e8f5d0964f32b23e8d80796"><code>df39cc6</code></a> Fix async callbacks in conjunction with fork()</li> <li><a href="https://github.com/ffi/ffi/commit/ea13267c876f28e475c04cb38d645d9fb563b557"><code>ea13267</code></a> Prepare ffi-1.15.0</li> <li><a href="https://github.com/ffi/ffi/commit/1a87af07cb6e52762f1e3316f5c956bc7538e649"><code>1a87af0</code></a> Replace rubygems-tasks by bundler and do more release automation</li> <li><a href="https://github.com/ffi/ffi/commit/334c3afbd30df768974b9a228847fda027643c7d"><code>334c3af</code></a> Use shorter thread names for FFI's callbacks</li> <li><a href="https://github.com/ffi/ffi/commit/1cce06db0b774ee46ef98ea9ca6ceec5d21694a4"><code>1cce06d</code></a> Merge branch 'name-dispatcher-thread' of <a href="https://github.com/DataDog/ffi">https://github.com/DataDog/ffi</a> into ...</li> <li><a href="https://github.com/ffi/ffi/commit/c48dfe79c772074d6afc9dfa85fbf8f58a27b860"><code>c48dfe7</code></a> Implement async callback test on Windows and improve async specs</li> <li><a href="https://github.com/ffi/ffi/commit/6d14c0a9107c0d5febb3bf92a60d2581e768fa2f"><code>6d14c0a</code></a> Separate double callback spec and variadic call with function pointer</li> <li><a href="https://github.com/ffi/ffi/commit/57bcc6074ad45a52e4d93d3ef56af0105b0dcb26"><code>57bcc60</code></a> Remove unused VariadicInvoker#init</li> <li>Additional commits viewable in <a href="https://github.com/ffi/ffi/compare/1.14.2...v1.15.0">compare view</a></li> </ul> </details> <br />

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Bumps ffi from 1.14.2 to 1.15.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ffi/ffi/blob/master/CHANGELOG.md">ffi's changelog</a>.</em></p> <blockquote> <h2>1.15.0 / 2021-03-05</h2> <p>Fixed:</p> <ul> <li>Fix MSVC build</li> <li>Fix async callbacks in conjunction with fork(). <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/884">#884</a></li> </ul> <p>Added:</p> <ul> <li>Allow to pass callbacks in varargs. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/885">#885</a></li> <li>Name the threads for FFI callback dispatcher and async thread calls for easier debugging. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/883">#883</a> The name can be retrieved by Thread.name and is shown by Thread.list.inspect etc. Even gdb shows the thread name on supported operating systems.</li> <li>Add types.conf for powerpc64le-linux</li> <li>Add types.conf for riscv64-linux</li> <li>More release automation of ffi gems</li> </ul> <p>Changed:</p> <ul> <li>Switch from rubygems-tasks to bundler/gem_helper</li> </ul> <p>Removed:</p> <ul> <li>Remove unused VariadicInvoker#init</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/ffi/ffi/commit/1fb309c728bf5680c01b3781cbadea85cc6cf53b"><code>1fb309c</code></a> Use platform name as used by rubygems</li> <li><a href="https://github.com/ffi/ffi/commit/05537c72095ced1915c0458de39a4171915d04f8"><code>05537c7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/888">#888</a> from larskanis/async-callback-with-fork</li> <li><a href="https://github.com/ffi/ffi/commit/df39cc6b5ece580e8e8f5d0964f32b23e8d80796"><code>df39cc6</code></a> Fix async callbacks in conjunction with fork()</li> <li><a href="https://github.com/ffi/ffi/commit/ea13267c876f28e475c04cb38d645d9fb563b557"><code>ea13267</code></a> Prepare ffi-1.15.0</li> <li><a href="https://github.com/ffi/ffi/commit/1a87af07cb6e52762f1e3316f5c956bc7538e649"><code>1a87af0</code></a> Replace rubygems-tasks by bundler and do more release automation</li> <li><a href="https://github.com/ffi/ffi/commit/334c3afbd30df768974b9a228847fda027643c7d"><code>334c3af</code></a> Use shorter thread names for FFI's callbacks</li> <li><a href="https://github.com/ffi/ffi/commit/1cce06db0b774ee46ef98ea9ca6ceec5d21694a4"><code>1cce06d</code></a> Merge branch 'name-dispatcher-thread' of <a href="https://github.com/DataDog/ffi">https://github.com/DataDog/ffi</a> into ...</li> <li><a href="https://github.com/ffi/ffi/commit/c48dfe79c772074d6afc9dfa85fbf8f58a27b860"><code>c48dfe7</code></a> Implement async callback test on Windows and improve async specs</li> <li><a href="https://github.com/ffi/ffi/commit/6d14c0a9107c0d5febb3bf92a60d2581e768fa2f"><code>6d14c0a</code></a> Separate double callback spec and variadic call with function pointer</li> <li><a href="https://github.com/ffi/ffi/commit/57bcc6074ad45a52e4d93d3ef56af0105b0dcb26"><code>57bcc60</code></a> Remove unused VariadicInvoker#init</li> <li>Additional commits viewable in <a href="https://github.com/ffi/ffi/compare/1.14.2...v1.15.0">compare view</a></li> </ul> </details> <br />

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Merge Homebrew/homebrew-core into Homebrew/linuxbrew-core

Bumps ffi from 1.14.2 to 1.15.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ffi/ffi/blob/master/CHANGELOG.md">ffi's changelog</a>.</em></p> <blockquote> <h2>1.15.0 / 2021-03-05</h2> <p>Fixed:</p> <ul> <li>Fix MSVC build</li> <li>Fix async callbacks in conjunction with fork(). <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/884">#884</a></li> </ul> <p>Added:</p> <ul> <li>Allow to pass callbacks in varargs. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/885">#885</a></li> <li>Name the threads for FFI callback dispatcher and async thread calls for easier debugging. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/883">#883</a> The name can be retrieved by Thread.name and is shown by Thread.list.inspect etc. Even gdb shows the thread name on supported operating systems.</li> <li>Add types.conf for powerpc64le-linux</li> <li>Add types.conf for riscv64-linux</li> <li>More release automation of ffi gems</li> </ul> <p>Changed:</p> <ul> <li>Switch from rubygems-tasks to bundler/gem_helper</li> </ul> <p>Removed:</p> <ul> <li>Remove unused VariadicInvoker#init</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/ffi/ffi/commit/1fb309c728bf5680c01b3781cbadea85cc6cf53b"><code>1fb309c</code></a> Use platform name as used by rubygems</li> <li><a href="https://github.com/ffi/ffi/commit/05537c72095ced1915c0458de39a4171915d04f8"><code>05537c7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/888">#888</a> from larskanis/async-callback-with-fork</li> <li><a href="https://github.com/ffi/ffi/commit/df39cc6b5ece580e8e8f5d0964f32b23e8d80796"><code>df39cc6</code></a> Fix async callbacks in conjunction with fork()</li> <li><a href="https://github.com/ffi/ffi/commit/ea13267c876f28e475c04cb38d645d9fb563b557"><code>ea13267</code></a> Prepare ffi-1.15.0</li> <li><a href="https://github.com/ffi/ffi/commit/1a87af07cb6e52762f1e3316f5c956bc7538e649"><code>1a87af0</code></a> Replace rubygems-tasks by bundler and do more release automation</li> <li><a href="https://github.com/ffi/ffi/commit/334c3afbd30df768974b9a228847fda027643c7d"><code>334c3af</code></a> Use shorter thread names for FFI's callbacks</li> <li><a href="https://github.com/ffi/ffi/commit/1cce06db0b774ee46ef98ea9ca6ceec5d21694a4"><code>1cce06d</code></a> Merge branch 'name-dispatcher-thread' of <a href="https://github.com/DataDog/ffi">https://github.com/DataDog/ffi</a> into ...</li> <li><a href="https://github.com/ffi/ffi/commit/c48dfe79c772074d6afc9dfa85fbf8f58a27b860"><code>c48dfe7</code></a> Implement async callback test on Windows and improve async specs</li> <li><a href="https://github.com/ffi/ffi/commit/6d14c0a9107c0d5febb3bf92a60d2581e768fa2f"><code>6d14c0a</code></a> Separate double callback spec and variadic call with function pointer</li> <li><a href="https://github.com/ffi/ffi/commit/57bcc6074ad45a52e4d93d3ef56af0105b0dcb26"><code>57bcc60</code></a> Remove unused VariadicInvoker#init</li> <li>Additional commits viewable in <a href="https://github.com/ffi/ffi/compare/1.14.2...v1.15.0">compare view</a></li> </ul> </details> <br />

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Bumps ffi from 1.14.2 to 1.15.0. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/ffi/ffi/blob/master/CHANGELOG.md">ffi's changelog</a>.</em></p> <blockquote> <h2>1.15.0 / 2021-03-05</h2> <p>Fixed:</p> <ul> <li>Fix MSVC build</li> <li>Fix async callbacks in conjunction with fork(). <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/884">#884</a></li> </ul> <p>Added:</p> <ul> <li>Allow to pass callbacks in varargs. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/885">#885</a></li> <li>Name the threads for FFI callback dispatcher and async thread calls for easier debugging. <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/883">#883</a> The name can be retrieved by Thread.name and is shown by Thread.list.inspect etc. Even gdb shows the thread name on supported operating systems.</li> <li>Add types.conf for powerpc64le-linux</li> <li>Add types.conf for riscv64-linux</li> <li>More release automation of ffi gems</li> </ul> <p>Changed:</p> <ul> <li>Switch from rubygems-tasks to bundler/gem_helper</li> </ul> <p>Removed:</p> <ul> <li>Remove unused VariadicInvoker#init</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/ffi/ffi/commit/1fb309c728bf5680c01b3781cbadea85cc6cf53b"><code>1fb309c</code></a> Use platform name as used by rubygems</li> <li><a href="https://github.com/ffi/ffi/commit/05537c72095ced1915c0458de39a4171915d04f8"><code>05537c7</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/ffi/ffi/issues/888">#888</a> from larskanis/async-callback-with-fork</li> <li><a href="https://github.com/ffi/ffi/commit/df39cc6b5ece580e8e8f5d0964f32b23e8d80796"><code>df39cc6</code></a> Fix async callbacks in conjunction with fork()</li> <li><a href="https://github.com/ffi/ffi/commit/ea13267c876f28e475c04cb38d645d9fb563b557"><code>ea13267</code></a> Prepare ffi-1.15.0</li> <li><a href="https://github.com/ffi/ffi/commit/1a87af07cb6e52762f1e3316f5c956bc7538e649"><code>1a87af0</code></a> Replace rubygems-tasks by bundler and do more release automation</li> <li><a href="https://github.com/ffi/ffi/commit/334c3afbd30df768974b9a228847fda027643c7d"><code>334c3af</code></a> Use shorter thread names for FFI's callbacks</li> <li><a href="https://github.com/ffi/ffi/commit/1cce06db0b774ee46ef98ea9ca6ceec5d21694a4"><code>1cce06d</code></a> Merge branch 'name-dispatcher-thread' of <a href="https://github.com/DataDog/ffi">https://github.com/DataDog/ffi</a> into ...</li> <li><a href="https://github.com/ffi/ffi/commit/c48dfe79c772074d6afc9dfa85fbf8f58a27b860"><code>c48dfe7</code></a> Implement async callback test on Windows and improve async specs</li> <li><a href="https://github.com/ffi/ffi/commit/6d14c0a9107c0d5febb3bf92a60d2581e768fa2f"><code>6d14c0a</code></a> Separate double callback spec and variadic call with function pointer</li> <li><a href="https://github.com/ffi/ffi/commit/57bcc6074ad45a52e4d93d3ef56af0105b0dcb26"><code>57bcc60</code></a> Remove unused VariadicInvoker#init</li> <li>Additional commits viewable in <a href="https://github.com/ffi/ffi/compare/1.14.2...v1.15.0">compare view</a></li> </ul> </details> <br />

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Another thing I've seen is how the word "formula" can refer to either the file itself (e.g. the contents of homebrew-<tap>/Formula/*), or what it installs in /usr/local/Cellar (aka Kegs) or as a general term encompassing both traditional formula files and cask files; each of which usually relies on context to distinguish.

Upgrade dependencies stored in node_modules.

<!-- #review-period-begin -->

Review period will end on 2021-03-09 at 00:00:00 UTC.

find should eliminate all <formula>.rb that are in a Casks directory. Fixes #10799.

• [x] Have you followed the guidelines in our Contributing document?
• [x] Have you checked to ensure there aren't other open Pull Requests for the same change?
• [x] Have you added an explanation of what your changes do and why you'd like us to include them?
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• [x] Have you successfully run brew style with your changes locally?
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I guess you could change Line 23 to

formula_path="$(find "$HOMEBREW_REPOSITORY/Library/Taps" -name "Formula/${formula}.rb" -print -quit)" 

This will work for taps that keep their formula files in a directory called Formula, but it'll break it for all taps that don't. Otherwise, I suppose we could exclude searching subdirectories called Casks.

There is another problem on line 21. It should be:

   formula_path="$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/Formula/${formula}.rb" 

Please go ahead and work on it, @Manav-Kumar. You may find this guide helpful: https://docs.brew.sh/How-To-Open-a-Homebrew-Pull-Request

Thanks!

I like the idea of simplifying terminology. However, I think "keg-only" is one of the few pieces that don't need simplification. I've seen very little confusion about what exactly it means, most likely because it's already explained clearly in any instance where a user encounters it. That explanation is useful for users who go on to read formula files that say keg_only.

This problem is in brew/Library/Homebrew/prefix.sh:

  if [ -f "$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/${formula}.rb" ]; then
    formula_path="$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/${formula}.rb"
  else
    formula_path="$(find "$HOMEBREW_REPOSITORY/Library/Taps" -name "${formula}.rb" -print -quit)"
  fi
  [ -z "$formula_path" ] && return 1

  echo "$HOMEBREW_PREFIX/opt/$formula"```

To check if a formula exists:

find "$HOMEBREW_REPOSITORY/Library/Taps" -name "${formula}.rb"

is used.

Running `brew --prefix virtualbox` will thenfind the cask even if there is no formula named virtualbox.