Hello Maxime, to my understanding some libtree tests (namely 07 and 08) are made in such way that they finish with a non-zero code when they pass, that makes Guix stop during the build with an error. For example, the test "07_origin_is_relative_to_symlink_location_not_realpath" expects that libtree will fail. I checked a compiled "exe" file from a failed build and got this: --8<---------------cut here---------------start------------->8--- $ libtree /tmp/guix-build-libtree-3.0.1.drv-0/source/tests/07_origin_is_relative_to_symlink_location_not_realpath/exe exe └── libg.so [runpath] └── libf.so not found ┊ Paths considered in this order: ┊ 1. rpath is skipped because runpath was set ┊ 2. LD_LIBRARY_PATH was not set ┊ 3. runpath: ┊ /tmp/guix-build-libtree-3.0.1.drv-0/source/tests/07_origin_is_relative_to_symlink_location_not_realpath/b ┊ 4. ld config files: ┊ /usr/lib/x86_64-linux-gnu/libfakeroot ┊ /usr/local/lib ┊ /usr/local/lib/x86_64-linux-gnu ┊ /lib/x86_64-linux-gnu ┊ /usr/lib/x86_64-linux-gnu ┊ /lib32 ┊ /usr/lib32 ┊ 5. Standard paths: ┊ /lib ┊ /lib64 ┊ /usr/lib ┊ /usr/lib64 Error [/tmp/guix-build-libtree-3.0.1.drv-0/source/tests/07_origin_is_relative_to_symlink_location_not_realpath/exe]: Not all dependencies were found $ echo $? 28 --8<---------------cut here---------------end--------------->8--- Yet libtree itself seems to work fine after installation from Guix. Here's an example of the output for a correct binary: --8<---------------cut here---------------start------------->8--- $ libtree guix-daemon guix-daemon ├── libz.so.1 [runpath] ├── libbz2.so.1.0 [runpath] ├── libgcrypt.so.20 [runpath] │ └── libgpg-error.so.0 [runpath] └── libsqlite3.so.0 [runpath] --8<---------------cut here---------------end--------------->8--- I suggest that we keep "#f" for tests unless the libtree author fix this behavior. For now I opened an issue for libtree: https://github.com/haampie/libtree/issues/65 Thanks! - Artyom -- Artyom "avp" Poptsov Home page: https://memory-heap.org/~avp/ CADR Hackerspace co-founder: https://cadrspace.ru/ GPG: D0C2 EAC1 3310 822D 98DE B57C E9C5 A2D9 0898 A02F