Add merge-wait FEATURES setting enabled by default #1238
Merged
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Add a new merge-wait FEATURES setting, enabled by default, which prevents packages from being merged while other packages are building. Previously, this behavior was already implemented for packages that satisfy direct or indirect dependencies of the system set. This feature can be disabled only for other packages which do not satisfy direct or indirect dependencies of the system set, in order to trade the possibility of random build failures for greater parallelism.
Currently, it is known that having merge-wait disabled can cause "random" build failures for builds using setuptools when setuptools plugins are merged during the build.
Bug: https://bugs.gentoo.org/663324