Additionally, assign HOMEBREW_TEMP based on the host
system (/tmp for Linux, /private/tmp for macOS).

We provide a /private/tmp fallback in bin/brew, so
this is no longer necessary.

Remove `Hbc.init`.

fix typo

formula_installer: don't pass spec arguments from ARGV to postinstall

text_cop: require cargo to use `install` instead of `build`

Postinstall should be executed with the spec of the target formula not
the spec argument from ARGV, otherwise the prefix can be incorrect. In
other words, if the stable version of a dependency gets installed,
postinstall for the dependency should use the prefix of the dependency's
stable version, not the prefix of its devel or head version.

Fixes #2941.

Remove `Locations` module.

Refactor `brew cask search`.

audit: fix typo

Refactor `search_formulae`.

text_cop: require `dep ensure` to use `-vendor-only`

audit: throttled formulae

Refactor `search`.