I'm unable to upgrade Guix due to missing kernel headers: $ guix --version guix (GNU Guix) 20170620.00 Copyright (C) 2017 the Guix authors License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. $ guix pull Starting download of /tmp/guix-file.0m9wng From https://git.savannah.gnu.org/cgit/guix.git/snapshot/master.tar.gz... ….tar.gz 3.2MiB/s 00:04 | 13.2MiB transferred unpacking '/gnu/store/fc5hc5akpiyx8dc1kp8lli3pj7h14d93-guix-latest.tar.gz'... Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From http://linux-libre.fsfla.org/pub/linux-libre/releases/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz... ERROR: download failed "http://linux-libre.fsfla.org/pub/linux-libre/releases/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz" 404 "Not Found" Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From ftp://alpha.gnu.org/gnu/guix/mirror/linux-libre-4.4.47-gnu.tar.xz... ERROR: Throw to key `ftp-error' with args `(# "RETR linux-libre-4.4.47-gnu.tar.xz" 550 "Failed to open file.\r")'. Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From http://ftpmirror.gnu.org/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz... following redirection to `http://ftp.halifax.rwth-aachen.de/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz'... ERROR: download failed "http://ftp.halifax.rwth-aachen.de/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz" 404 "Not Found" Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From ftp://ftp.cs.tu-berlin.de/pub/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz... ERROR: In procedure connect*: Connection timed out Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From ftp://ftp.funet.fi/pub/mirrors/ftp.gnu.org/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz... ERROR: Throw to key `ftp-error' with args `(# "CWD 4.4.47-gnu" 550 "Can't change directory to 4.4.47-gnu: No such file or directory\r")'. Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From http://ftp.gnu.org/pub/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz... ERROR: download failed "http://ftp.gnu.org/pub/gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz" 404 "Not Found" Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From http://mirror.hydra.gnu.org/file/linux-libre-4.4.47-gnu.tar.xz/sha256/00zdq7swhvzbbnnhzizq6m34q5k4fycpcp215bmkbxh1ic76v7bs... ERROR: download failed "http://mirror.hydra.gnu.org/file/linux-libre-4.4.47-gnu.tar.xz/sha256/00zdq7swhvzbbnnhzizq6m34q5k4fycpcp215bmkbxh1ic76v7bs" 504 "Gateway Time-out" Starting download of /gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz From http://tarballs.nixos.org/sha256/00zdq7swhvzbbnnhzizq6m34q5k4fycpcp215bmkbxh1ic76v7bs... ERROR: download failed "http://tarballs.nixos.org/sha256/00zdq7swhvzbbnnhzizq6m34q5k4fycpcp215bmkbxh1ic76v7bs" 404 "Not Found" failed to download "/gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz" from ("http://linux-libre.fsfla.org/pub/linux-libre/releases/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz" "ftp://alpha.gnu.org/gnu/guix/mirror/linux-libre-4.4.47-gnu.tar.xz" "mirror://gnu/linux-libre/4.4.47-gnu/linux-libre-4.4.47-gnu.tar.xz") builder for `/gnu/store/q4x877jbkiixpjmzybkq11nfk61i09i0-linux-libre-4.4.47-gnu.tar.xz.drv' failed to produce output path `/gnu/store/x8x9s119g1xhdxrzaka35lx4p45qd3vg-linux-libre-4.4.47-gnu.tar.xz' cannot build derivation `/gnu/store/v4irmi0ilchzz88j8z2c399z72ipxfk3-linux-libre-headers-4.4.47.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/bqz4gq9jg7klpv0jsq9ilswiw7j9za9d-expat-2.2.1.drv': 1 dependencies couldn't be built guix pull: error: build failed: build of `/gnu/store/bqz4gq9jg7klpv0jsq9ilswiw7j9za9d-expat-2.2.1.drv' failed