The sets haskell.packages and haskell.compiler now contain for every ghc version an attribute with the minor version dropped. E.g. for ghc8107 there also now exists ghc810. Those attributes point to the same compilers and packagesets but have the advantage that e.g. ghc92 stays stable when we update from ghc925 to ghc926.
Please note that Rust packages utilizing a custom build/install procedure (e.g. by using a Makefile) or test suites that rely on the structure of the target/ directory may break due to those assumptions. For further information, please read the Rust section in the Nixpkgs manual.
The Kubernetes DNS addons, kube-dns, has been replaced with CoreDNS. This change is made in accordance with Kubernetes making CoreDNS the official default starting from Kubernetes v1.11. Please beware that upgrading DNS-addon on existing clusters might induce minor downtime while the DNS-addon terminates and re-initializes. Also note that the DNS-service now runs with 2 pod replicas by default. The desired number of replicas can be configured using: services.kubernetes.addons.dns.replicas.
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