formula_installer: fix default formula prune.

Only prune it if it's not already installed.

Fixes bug with https://github.com/Homebrew/brew/pull/3479
Closes https://github.com/Homebrew/brew/pull/3535.
This commit is contained in:
Mike McQuaid 2017-12-07 08:55:36 +00:00
parent 9cabda83e4
commit 0245b2cfea

View File

@ -449,7 +449,7 @@ class FormulaInstaller
if (req.optional? || req.recommended?) && build.without?(req)
Requirement.prune
elsif req.build? && use_default_formula
elsif req.build? && use_default_formula && req_dependency.installed?
Requirement.prune
elsif install_requirement_formula?(req_dependency, req, install_bottle_for_dependent)
deps.unshift(req_dependency)