Arun Isaac writes: > Please find attached patch to update mpop from 1.2.5 to 1.2.6. Thanks for this. I'm unable to download the new version with `./pre-inst-env guix build mpop`; however downloading manually with `guix download` works fine and returns the hash, so I pushed the patch. Here is the output from `./pre-inst-env guix build`, it appears to give up after the redirect to HTTPS from sourceforge. @ build-started /gnu/store/10wpp69fc0v7dk0mqk3075cy9d7iwwmh-mpop-1.2.6.tar.xz.drv - x86_64-linux /var/log/guix/drvs/10//wpp69fc0v7dk0mqk3075cy9d7iwwmh-mpop-1.2.6.tar.xz.drv.bz2 Starting download of /gnu/store/nxf0mgh6dynniy99gsxhff9xr217s1rl-mpop-1.2.6.tar.xz From http://downloads.sourceforge.net/mpop/mpop-1.2.6.tar.xz... following redirection to `http://downloads.sourceforge.net/project/mpop/mpop/1.2.6/mpop-1.2.6.tar.xz'... following redirection to `https://netcologne.dl.sourceforge.net/project/mpop/mpop/1.2.6/mpop-1.2.6.tar.xz'... ;;; Failed to autoload make-session in (gnutls): ;;; ERROR: missing interface for module (gnutls) ERROR: In procedure module-lookup: Unbound variable: make-session Starting download of /gnu/store/nxf0mgh6dynniy99gsxhff9xr217s1rl-mpop-1.2.6.tar.xz From http://mirror.hydra.gnu.org/file/mpop-1.2.6.tar.xz/sha256/0p1ix63jh64dibrlccch8q7gxl9nn18wd2qpyr5z1h4gs2fpmv4z... [...]