Remove obsolete github.com/pkg/errors dependency, and drop golang.org/x/sys - #52
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Golang's standard library now has good support for errors, switch to using it so we can drop the github.com/pkg/errors dependency.
We used golang.org/x/sys in only two places: - For raising the RLIMIT in tests. This isn't required anymore as of kernel 5.11, so can stop doing it. - For attaching the socket filter to a unix socket. But this is also trivially doable with the syscall package. This removes the direct dependency on golang.org/x/sys: one less thing for us to go update.
Dhiver
approved these changes
Aug 28, 2026
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This drops two unneeded dependencies:
github.com/pkg/errors: suitable error handling is now in the go standard library.golang.org/x/sys: we only needed it to set theRLIMIT, which was required for tests before kernel 5.11. But CI runs on a more recent kernel, so that doesn't matter.