systemd: disable libbpf if compiler-rt unsupported
If we can't build compiler-rt, we can't have a clang for that platform. Example affected architecture: s390, which is useful for testing assumptions in Nixpkgs because it's a Linux architecture that we can't emulate. I've written buildPackages.targetPackages.llvmPackages even though it's the same thing as llvmPackages because of the comment in this file that warns people against relying on splicing for llvmPackages. Taking llvmPackages as an input directly would make it easier for people to make that mistake without seeing the comment.
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@ -100,6 +100,10 @@
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, withLibBPF ? lib.versionAtLeast buildPackages.llvmPackages.clang.version "10.0"
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&& (stdenv.hostPlatform.isAarch -> lib.versionAtLeast stdenv.hostPlatform.parsed.cpu.version "6") # assumes hard floats
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&& !stdenv.hostPlatform.isMips64 # see https://github.com/NixOS/nixpkgs/pull/194149#issuecomment-1266642211
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# buildPackages.targetPackages.llvmPackages is the same as llvmPackages,
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# but we do it this way to avoid taking llvmPackages as an input, and
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# risking making it too easy to ignore the above comment about llvmPackages.
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&& lib.meta.availableOn stdenv.hostPlatform buildPackages.targetPackages.llvmPackages.compiler-rt
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, withLibidn2 ? true
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, withLocaled ? true
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, withLogind ? true
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