the following derivations will be built:
    /nix/store/xncp5h9zzfhbirwz08i8zyf3x2la1am7-xeyes-1.0.1.drv
    /nix/store/pnix5g8ab3p17031zxbb0c7wwywd1d3p-xcb-proto-1.7.1.tar.bz2.drv
    /nix/store/ndwf24lkh4j8i0m1zs3q6vyyayfl6q4z-libxml2-2.9.0.tar.gz.drv
    /nix/store/042zj0d0478frh4256z4v3xinfcd98fi-libgpg-error-1.10.drv
    /nix/store/2gl3d1gv0f9l53v6grab6la8q1jdc513-libxml2-2.9.0.drv
    /nix/store/66ca8hk1g2yd0bhvyxc6l9q9hz9q4b84-libxslt-1.1.28.tar.gz.drv
    /nix/store/ds8h8frpacls5w1s08hxlp1j472apw2q-libgcrypt-1.5.0.drv
    /nix/store/jqf76gg2w91z9mvcrhhjwl4k8vc4yj0b-openssl-1.0.1c.tar.gz.drv
    /nix/store/71gd8dkvkw0qla035zva8bbrs60r1nkl-Python-2.7.3.tar.xz.drv
    /nix/store/ql6xmvb04d043yxc78bpiwg5nxkmggnb-bzip2-1.0.6.drv
    /nix/store/zpw48c9pwkyd2s1driq7r1h5h5mvmh8b-openssl-1.0.1c.drv
    /nix/store/dw3yrza6i4vjg5sr41r07s128h723fp5-python-2.7.3.drv
    /nix/store/f4km5jh86nw7wy7329ikv9acjsl2aaly-libxslt-1.1.28.drv
    /nix/store/xhr5ffpzkr09ny2g172w7y3fvdrkhy3n-xcb-proto-1.7.1.drv
    /nix/store/xrvl5hc66x61d5rc3h8mzqsj2c5mws0b-libxcb-1.8.1.tar.bz2.drv
    /nix/store/dldbaciqygfj9ravc8qr18kkg5icj5zi-zlib-1.2.7.tar.gz.drv
    /nix/store/61p3afjnmf0j2l7llnxhagq6lby7sqkx-perl-5.16.1.drv
    /nix/store/jkqlanhd2azrb2zpx72v5sp193zl9sv2-ncurses-5.9.drv
    /nix/store/s9fanhqi1y0myd45jn719z5s60p09vv7-zlib-1.2.7.drv
    /nix/store/swjf56rizb08iqi44mny2rlw9n7d6c5x-util-linux-2.21.2.tar.xz.drv
    /nix/store/clb76g1qpr5vs9wpwhgsnrcjay85aj89-util-linux-2.21.drv
    /nix/store/zjqk7kcbyhyhj1sxx80dznvwidaw7pbf-attr-2.4.46.drv
    /nix/store/xs8jvzlvmrcq00q0q686mjbq2wkzg9i1-m4-1.4.16.drv
    /nix/store/47gx1nxph2piabagr3v0h8b8pkah2dc4-gmp-5.1.1.drv
    /nix/store/9cy4w9y0z1b4zhvdf220rmv49pwmvhjd-acl-2.2.51.drv
    /nix/store/klvglzai7zkdfnz5ycp5j9s5cw8abmd1-libpthread-stubs-0.3.tar.bz2.drv
    /nix/store/azhahh4b5bnaarcbpxjvnmmqxiwp4zkk-xtrans-1.2.7.tar.bz2.drv
    /nix/store/10xfnw0wd5blg2v5wxicciqcfkr565v8-inputproto-2.2.drv
    /nix/store/zybjyrgds0d860gdjvs2d535pd1hnqa4-xtrans-1.2.7.drv
    /nix/store/4qgw98dql1c1qy4zvwywqqi06fis0b4v-libxt-1.1.3.drv
    /nix/store/51zvmx24g81z4fn47v3dhhd692jv5p27-libx11-1.5.0.drv
    /nix/store/63a5l9ls5ifradymxlk2br5dgisb1bk0-libxdmcp-1.1.1.drv
    /nix/store/akhr5b9lpjykd513lfgnnl08bnpz5g3j-kbproto-1.0.6.drv
    /nix/store/g9ip5ayrvqzw8ws1gxxgnab3z16f1rjd-libpthread-stubs-0.3.drv
    /nix/store/hx4yim8pfnsvvjd0xvnw6qkyrrbqr37m-libxext-1.3.1.drv
    /nix/store/i08d3y8hy0g317lpzv9gwwrcp7jwdlxc-util-macros-1.17.drv
    /nix/store/m5fvxj463ffdjdk73czmqdcm01zwh0j4-libxmu-1.1.1.drv
    /nix/store/nv5ima4avfxg08da3mbi0ybnpljr1ijm-pkg-config-0.27.1.drv
    /nix/store/rgkyb6mfgfyn2ablayilri9bz5bdqzk3-libxau-1.0.7.drv
    /nix/store/vv8ff84p7ywyal5xd0jdr5msanjiq9jc-coreutils-8.20.drv
    /nix/store/w2zbi3cymrbz6hx6zgpxnx72656glx3l-libsm-1.2.1.drv
    /nix/store/w91mbzikrwy8fg24z09azqq191lan2bg-xextproto-7.2.1.drv
    /nix/store/w92nmn5yisqxsiax1lpa4kwywwavn04n-libxcb-1.8.1.drv
    /nix/store/x3sr352v81nmwx5w4jrdpwzxy0x0a7zn-libice-1.0.8.drv
    /nix/store/zx2q020a8j60qzkqjqqkg3n5rxaks72q-xproto-7.0.23.drv
building path(s) `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2'
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `http://www.x.org/releases/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: download failed "http://www.x.org/releases/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2" 403 "Forbidden"
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `ftp://mirror.csclub.uwaterloo.ca/x.org/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: Throw to key `ftp-error' with args `(#<input-output: socket 7> "RETR libpthread-stubs-0.3.tar.bz2" 550 "libpthread-stubs-0.3.tar.bz2: No such file or directory\r")'.
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `ftp://xorg.mirrors.pair.com/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: Throw to key `ftp-error' with args `(#<input-output: socket 9> "RETR libpthread-stubs-0.3.tar.bz2" 553 "Permission denied.\r")'.
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `http://mirror.csclub.uwaterloo.ca/x.org/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: download failed "http://mirror.csclub.uwaterloo.ca/x.org/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2" 403 "Forbidden"
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `http://xorg.mirrors.pair.com/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: download failed "http://xorg.mirrors.pair.com/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2" 403 "Forbidden"
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `http://mirror.us.leaseweb.net/xorg/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: download failed "http://mirror.us.leaseweb.net/xorg/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2" 404 "Not Found"
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `ftp://artfiles.org/x.org/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...
ERROR: Throw to key `ftp-error' with args `(#<input-output: socket 14> "CWD /x.org/X11R7.7/src/everything" 550 "/x.org/X11R7.7/src/everything: No such file or directory\r")'.
starting download of `/nix/store/hnj7gclmcpffmkx1nrdha2fc2bnp6w4c-libpthread-stubs-0.3.tar.bz2' from `ftp://ftp.chg.ru/pub/X11/x.org/X11R7.7/src/everything/libpthread-stubs-0.3.tar.bz2'...