I've modified the script to sort the packages it prints: --8<---------------cut here---------------start------------->8--- - (for-each (lambda (p) - (format #t "~a~%" (package-name p))) - packages))) + (for-each (lambda (name) + (format #t "~a~%" name)) + (sort (map package-name packages) string8--- and compared it to the list here: https://github.com/Homebrew/homebrew-core/issues/18044 If we can trust the Homebrew list to be extensive, it seems we got lucky; there's only one affected package that we share which is yaml-cpp. Here's how it fails on our side: --8<---------------cut here---------------start------------->8--- guix build -S --no-substitutes yaml-cpp The following derivation will be built: /gnu/store/mlap8jmadirnbii6sppb6vj9x56s8azw-yaml-cpp-0.5.3.tar.gz.drv @ build-started /gnu/store/mlap8jmadirnbii6sppb6vj9x56s8azw-yaml-cpp-0.5.3.tar.gz.drv - x86_64-linux /var/log/guix/drvs/ml//ap8jmadirnbii6sppb6vj9x56s8azw-yaml-cpp-0.5.3.tar.gz.drv.bz2 Starting download of /gnu/store/qwflwafrzjbr2b7dy4nv18nxykghhmnk-yaml-cpp-0.5.3.tar.gz From https://github.com/jbeder/yaml-cpp/archive/yaml-cpp-0.5.3.tar.gz... following redirection to `https://codeload.github.com/jbeder/yaml-cpp/tar.gz/yaml-cpp-0.5.3'... ...p-0.5.3 1.7MiB/s 00:01 | 1.9MiB transferred sha256 hash mismatch for output path `/gnu/store/qwflwafrzjbr2b7dy4nv18nxykghhmnk-yaml-cpp-0.5.3.tar.gz' expected: 1vk6pjh0f5k6jwk2sszb9z5169whmiha9ainbdpa1arxlkq7v3b6 actual: 1ck7jk0wjfigrf4cgcjqsir4yp1s6vamhhxhpsgfvs46pgm5pk6y @ build-failed /gnu/store/mlap8jmadirnbii6sppb6vj9x56s8azw-yaml-cpp-0.5.3.tar.gz.drv - 1 sha256 hash mismatch for output path `/gnu/store/qwflwafrzjbr2b7dy4nv18nxykghhmnk-yaml-cpp-0.5.3.tar.gz' expected: 1vk6pjh0f5k6jwk2sszb9z5169whmiha9ainbdpa1arxlkq7v3b6 actual: 1ck7jk0wjfigrf4cgcjqsir4yp1s6vamhhxhpsgfvs46pgm5pk6y guix build: error: build failed: build of `/gnu/store/mlap8jmadirnbii6sppb6vj9x56s8azw-yaml-cpp-0.5.3.tar.gz.drv' failed --8<---------------cut here---------------end--------------->8--- Maxim