My React Native project requires ImageMagick, GraphicsMagick and Watchman to be installed before creating a build on CircleCI. Is there a way to pre-install these package so that I don’t have to waste 6 minutes whenever I trigger a build?
You’ve not mentioned your OS, but I assume from the “Brew” in your title that you’re on OS X. If so, then I don’t think you can preload.
Can React Native be built on Linux? If so (and if you are willing to switch) you can create a lightweight Docker image for your build image, containing the tools you need.