Hi, Thanks for the patch. I could build v4 1/1 patch without disabling system tests on aarch64 --8<---------------cut here---------------start------------->8--- ./pre-inst-env guix build nzbget --system=aarch64-linux /gnu/store/cdjbbx3iyrmglg9pbvmb8645bcxv1x33-nzbget-24.3 --8<---------------cut here---------------end--------------->8--- May you provide some reasoning or error log what you see on your end please? -- Oleg