Official C driver for MongoDB Formula was removed
Last versions were
mongo-c requires the following formulae to be installed:
pkg-config 0.29.2 Manage compile and link flags for libraries
openssl 1.0.2m SSL/TLS cryptography library

Formula history

Mike McQuaid mongo-c-driver: rename from mongo-c, cleanup.
ilovezfs mongo-c 1.5.0
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
ilovezfs mongo-c 1.4.0
Alex Dunn mongo-c 1.3.5
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages
A. Jesse Jiryu Davis mongo-c 1.1.6
Viktor Szakats mongo-c: SSL/TLS homepage, modernize
Tyler Brock mongo-c 1.1.5
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