Dear, Please run:
echo "%default-channels" > /tmp/chan.scm guix time-machine --commit=cac674d99dc4a332e6210c57ec7f1b8164f66642 \ -C /tmp/chan.scm \ -- package -i pyhton-umap-learn This will fix your initial issue, I guess. > [h...@max-login3.mdc-berlin.net:~] $ guix time-machine > --commit=cd5406effa34fa5cfda7eb7bbd2ccaf5201cf523 -C /tmp/chan.scm -- > package -p guix/new/.guix-profile -i python-umap-learn I have not checked in your previous email, but it is the wrong commit. > build of > /gnu/store/vxf3qwhkahgzfhwp6c63vm8vky9fj5bl-python-scikit-learn-0.20.4.drv > failed > View build log at > '/gnu/var/log/guix/drvs/vx/f3qwhkahgzfhwp6c63vm8vky9fj5bl-python-scikit-learn-0.20.4.drv'. > guix package: error: build of > `/gnu/store/vxf3qwhkahgzfhwp6c63vm8vky9fj5bl-python-scikit-learn-0.20.4.drv' > failed It could be expected since the package 'python-scikit-learn' is broken: https://data.guix.gnu.org/repository/1/branch/master/package/python-scikit-learn/output-history especially for the commit you are trying (which is not the one you need for the working 'python-umap-learn' package). > Why this commit? 'python-umap-learn' should be broken > > This commit is the most recent succeeded build from 2020-04-18 19:24:20, you > also suggested this commit before. Ah yeah but then what was the previous commit cd5406effa34fa5cfda7eb7bbd2ccaf5201cf523? :-) > [h...@max-login3.mdc-berlin.net:~] $ guix time-machine > --commit=cac674d99dc4a332e6210c57ec7f1b8164f66642 -- help > Updating channel 'guix' from Git repository at > 'https://git.savannah.gnu.org/git/guix.git'... > Updating channel 'guix-bimsb' from Git repository at > 'https://github.com/BIMSBbioinfo/guix-bimsb.git'... > Updating channel 'guix-past' from Git repository at > 'https://gitlab.inria.fr/guix-hpc/guix-past'... > Updating channel 'guix-bimsb-nonfree' from Git repository at > 'https://github.com/BIMSBbioinfo/guix-bimsb-nonfree.git'... [...] > /builder for > `/gnu/store/yaj4m68r6l9jhdb767psz79fm84hb6x6-guix-package-cache.drv' failed > to produce output path > `/gnu/store/9vpcvp00acz4lvglfs1k69a4i05p5hbw-guix-package-cache' > build of /gnu/store/yaj4m68r6l9jhdb767psz79fm84hb6x6-guix-package-cache.drv > failed > View build log at > '/gnu/var/log/guix/drvs/ya/j4m68r6l9jhdb767psz79fm84hb6x6-guix-package-cache.drv'. > cannot build derivation > `/gnu/store/zz2557r32hsq2ksa53ix4ygaskkrs2qi-profile.drv': 1 dependencies > couldn't be built > guix time-machine: error: build of > `/gnu/store/zz2557r32hsq2ksa53ix4ygaskkrs2qi-profile.drv' failed This comes from the extra 3 channels you added. If you remove them (see above), then it should work, I guess. Hope that helps, simon