Release 22.11 (“Raccoon”, 2022.11/??)

Support is planned until the end of June 2023, handing over to 23.05.

Highlights

In addition to numerous new and upgraded packages, this release has the following highlights:

During cross-compilation, tests are now executed if the test suite can be executed by the build platform. This is the case when doing “native” cross-compilation where the build and host platforms are largely the same, but the nixpkgs' cross compilation infrastructure is used, e.g. pkgsStatic and pkgsLLVM. Another possibility is that the build platform is a superset of the host platform, e.g. when cross-compiling from x86_64-unknown-linux to i686-unknown-linux. The predicate gating test suite execution is the newly added canExecute predicate: You can e.g. check if stdenv.buildPlatform can execute binaries built for stdenv.hostPlatform (i.e. produced by stdenv.cc) by evaluating stdenv.buildPlatform.canExecute stdenv.hostPlatform.

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The isCompatible predicate checking CPU compatibility is no longer exposed by the platform sets generated using lib.systems.elaborate. In most cases you will want to use the new canExecute predicate instead which also considers the kernel / syscall interface. It is briefly described in the release's highlights section. lib.systems.parse.isCompatible still exists, but has changed semantically: Architectures with differing endianness modes are no longer considered compatible.

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