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doc: add a release note about proper sourceRoot usage

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Jan Malakhovski 2023-07-25 13:30:01 +00:00
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nixos/doc/manual/release-notes/rl-2311.section.md
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@ -162,6 +162,8 @@ The module update takes care of the new config syntax and the data itself (user
## Nixpkgs internals {#sec-release-23.11-nixpkgs-internals}
- The use of `sourceRoot = "source";`, `sourceRoot = "source/subdir";`, and similar lines in package derivations using the default `unpackPhase` is deprecated as it requires `unpackPhase` to always produce a directory named "source". Use `sourceRoot = src.name`, `sourceRoot = "${src.name}/subdir";`, or `setSourceRoot = "sourceRoot=$(echo */subdir)";` or similar instead.
- The `qemu-vm.nix` module by default now identifies block devices via
persistent names available in `/dev/disk/by-*`. Because the rootDevice is
identfied by its filesystem label, it needs to be formatted before the VM is