Change to arch=('x86_64')
The linux-api-headers package is not an "any" arch package unless within the same family of processors (e.g. i686 and x86_64 were identical). However, this is not the case with other architectures (e.g. riscv64, arm).
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The linux-api-headers package is not an "any" arch package unless within the same family of processors (e.g. i686 and x86_64 were identical). However, this is not the case with other architectures (e.g. riscv64, arm).