Problems when installing ARTIQ on Linux

BoluFeng

I was tying to install ARTIQ and connect Kasli on a Linux computer (Ubuntu). I followed the manual and installed Nix, and run
$ nix-channel --add https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full
$ nix-channel --remove nixpkgs
$ nix-channel --add https://nixos.org/channels/nixos-20.09 nixpkgs
$ nix-channel --update

But after that, I can't find the direction ~/.config/nix/ . Does that mean I need to create both the folder nix and the file nix.conf?
After I did so, I created my-artiq-env.nix at the home directory, and run it with nix-shell my-artiq-env.nix. The error was:
FAILED cirq/optimizers/decompositions_test.py::test_single_qubit_op_to_framed_phase_form_output_on_example_case
= 1 failed, 8643 passed, 1 deselected, 36 xfailed, 255 warnings in 88.11s (0:01:28) =
builder for '/nix/store/diy745pa0msky18d7861gzr3ssabc1z9-python3.8-cirq-0.8.2.drv' failed with exit code 1
cannot build derivation '/nix/store/714a7dmphcafj4bczjd2whp9avgyxcb3-python3-3.8.8-env.drv': 1 dependencies couldn't be built
error: build of '/nix/store/714a7dmphcafj4bczjd2whp9avgyxcb3-python3-3.8.8-env.drv' failed

I suppose the installation was failed because when I tried to change the ip adress:
artiq_coremgmt -D 192.168.1.70 config write -s ip 192.168.1.75
artiq_coremgmt: command not found

It would be appreciated if someone could give me advice on how to solve this problem.

sb10q

Just remove cirq from the list of packages in my-artiq-env.nix. It's only there as an example and seems broken currently.

BoluFeng

I removed all necessary packages but only left artiq-full.artiq and artiq-full.artiq-comtools, the environment was successfully created. However I received another error as I tried to play with the core language:

WARNING:artiq.coredevice.comm_kernel:Mismatch between gateware (7.7613.eb38b664.beta) and software (6.7604.040aa6fd) versions

I suppose I still need to flash the device. But once I added openocd and artiq-full.artiq-board-kasli-system variant, the environment can't be created and the errors were: (I'm quite confused because I have 2TB empty storage, how could it be full? )

/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
** Message: 06:15:05.899: Requires Linux version >= 3.19 built with CONFIG_USER_NS
** Message: 06:15:05.904: Run: sudo sysctl -w kernel.unprivileged_userns_clone=1

** (process:304): ERROR **: 06:15:05.904: main: unshare: No space left on device
/nix/store/4y965wrv3shgg2s1ca431qpbrsb4dbag-stdenv-linux/setup: line 1301: 14 Trace/breakpoint trap (core dumped) vivado -mode batch -source top_route.tcl
builder for '/nix/store/vrywm8gl607ili802fhwjv7njqww77ij-artiq-board-kasli-okinawa-6.7604.040aa6fd-vivado-checkpoint.drv' failed with exit code 133
cannot build derivation '/nix/store/kv4xh2zqkjkb47mablp7baa89axksm1q-artiq-board-kasli-okinawa-6.7604.040aa6fd-vivado-output.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/nvs9aqy9cr7s68bj72k0d8ha50q1fcgs-artiq-board-kasli-okinawa-6.7604.040aa6fd.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/j3a40lqrbp7mz2adlnc6wr2qpk2xg606-python3-3.8.8-env.drv': 1 dependencies couldn't be built
error: build of '/nix/store/j3a40lqrbp7mz2adlnc6wr2qpk2xg606-python3-3.8.8-env.drv' failed

sb10q

That's an incorrect error message, all it really means is Vivado isn't installed. But you shouldn't need to recompile the bitstream anyway. Did you set nixpkgs to the correct channel?

BoluFeng

sb10q f

Yes, I solved this error by creating nix.conf file in /nix. But now I can't find the path of openocd. I don't think any of the follwing is the correct path as shown in the manual. (I've added artiq-full.openocd in the shell and created the environment. It seems like I added pkgs.openocd, but actually I didn't. )

[nix-shell:/nix/store]$ find . -name "openocd"
./r93hwwfs2ilfjyz3igb7ax454sc4v9cv-artiq-full/artiq-full/board-generated/fast/pkgs/openocd.nix
./ra2a5d4kz4vyxip06i0xq2h432qgxa7j-nixpkgs-20.09.4154.33824cdf8e4/nixpkgs/pkgs/development/tools/misc/openocd
./pfxkfjiqzp9dar5sa2gyylqabfiklh4p-nixpkgs-20.09.4132.52090c613ad/nixpkgs/pkgs/development/tools/misc/openocd
./z2q6hvv7czvzapkrdx20gcgixgnv1yrj-source/migen/build/openocd.py
./z8p1d2dp55xx64l554721pz2gy474x18-python3.8-migen-unstable-2021-02-08/lib/python3.8/site-packages/migen/build/openocd.py
./z8p1d2dp55xx64l554721pz2gy474x18-python3.8-migen-unstable-2021-02-08/lib/python3.8/site-packages/migen/build/pycache/openocd.cpython-38.pyc
./k5a90y2w2r1cfi271lr28l2p1zy1mf81-nixpkgs-21.05pre289536.c58b97674b1/nixpkgs/pkgs/development/tools/misc/openocd

sb10q

If you added artiq-full.openocd to your shell.nix, saved the file, and then restarted the nix-shell, then openocd should be in your PATH.

BoluFeng

sb10q
Is shell.nix means my-artiq-env.nix in the manual? If so, I have rerun it for many times, and definitely saved the file, but still cannot find the correct openocd path.

sb10q

What's the output of which openocd?

BoluFeng

sb10q no output

sb10q

Sounds like you have some general problems with your Linux setup. Normally the which command prints an error message when it doesn't find the executable. Please get your which command working normally (I don't know how).

jonasmanthey

On Debian which does not print an error when it does not find anything and since Ubuntu is based on Debian I would expect the same behaviour.

@BoluFeng: can you post the content of the .nix file that you use to start the nix-shell?

BoluFeng

jonasmanthey
The .nix file is just copied from the manual. I think which is still working because it shows the path when I type such like"which nix-shell", it seems that openocd is not installed.

let

pkgs contains the NixOS package collection. ARTIQ depends on some of them, and

you may want some additional packages from there.

pkgs = import <nixpkgs> {};
artiq-full = import <artiq-full> { inherit pkgs; };
in
pkgs.mkShell {
buildInputs = [
(pkgs.python3.withPackages(ps: [

List desired Python packages here.

    # You probably want these two.
    artiq-full.artiq
    artiq-full.artiq-comtools
    artiq-full.openocd
    # You need a board support package if and only if you intend to flash
    # a board (those packages contain only board firmware).
    # The lines below are only examples, you need to select appropriate
    # packages for your boards.
    #artiq-full.artiq-board-kc705-nist_clock
    artiq-full.artiq-board-kasli-okinawa
    #ps.paramiko  # needed if and only if flashing boards remotely (artiq_flash -H)

    # The NixOS package collection contains many other packages that you may find
    # interesting for your research. Here are some examples:
    #ps.pandas
    #ps.numpy
    #ps.scipy
    #ps.numba
    #(ps.matplotlib.override { enableQt = true; })
    #ps.bokeh
    #ps.cirq
    #ps.qiskit
  ]))

  # List desired non-Python packages here
  #artiq-full.openocd  # needed if and only if flashing boards
  # Other potentially interesting packages from the NixOS package collection:
  #pkgs.gtkwave
  #pkgs.spyder
  #pkgs.R
  #pkgs.julia
];

}

BoluFeng

jonasmanthey

I found the problem was I put the artiq-full.opendocd at the wrong place. Thank you so much!

jbroz

BoluFeng Can you elaborate on your solution? I'm currently trying to update my firmware and am encountering the same error code (and an essentially identical stack trace).

Also, I get the following outputs:

$ nix-channel --list
artiq-full https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full
nixpkgs https://nixos.org/channels/nixos-20.09

and

[nix-shell:~]$ which openocd
/nix/store/wf807zxidrca7j0bzslgm18i6gbvzxda-openocd-mlabs-0.10.0/bin/openocd

sb10q

jbroz [nix-shell:~]$ which openocd
/nix/store/wf807zxidrca7j0bzslgm18i6gbvzxda-openocd-mlabs-0.10.0/bin/openocd

That doesn't sound like the same problem. For the sake of clarity, can you post your shell.nix, the commands you used, and the exact error message?

jbroz

sb10q
Sure!

commands used:

619  curl -L https://nixos.org/nix/install | sh
620  nix-channel --add https://nixbld.m-labs.hk/channel/custom/artiq/full/artiq-full
621  nix-channel --remove nixpkgs
622  nix-channel --add https://nixos.org/channels/nixos-20.09 nixpkgs
623  nix-channel --update
...
629  nix-shell my-artiq-env.nix

~/.config/nix/nix.conf

substituters = https://cache.nixos.org https://nixbld.m-labs.hk
trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nixbld.m-labs.hk-1:5aSRVA5b320xbNvu30tqxVPXpld73bhtOeH6uAjRyHc=

shell.nix:

let
  # pkgs contains the NixOS package collection. ARTIQ depends on some of them, and
  # you may want some additional packages from there.
  pkgs = import <nixpkgs> {};
  artiq-full = import <artiq-full> { inherit pkgs; };
in
  pkgs.mkShell {
    buildInputs = [
      (pkgs.python3.withPackages(ps: [
        # List desired Python packages here.

        # You probably want these two.
        artiq-full.artiq
        artiq-full.artiq-comtools

        # You need a board support package if and only if you intend to flash
        # a board (those packages contain only board firmware).
        # The lines below are only examples, you need to select appropriate
        # packages for your boards.
        artiq-full.artiq-board-kasli-berkeley

        #ps.paramiko  # needed if and only if flashing boards remotely (artiq_flash -H)

        # The NixOS package collection contains many other packages that you may find
        # interesting for your research. Here are some examples:
        #ps.pandas
        #ps.numpy
        #ps.scipy
        #ps.numba
        #(ps.matplotlib.override { enableQt = true; })
        #ps.bokeh
        #ps.cirq
        #ps.qiskit
      ]))

      artiq-full.openocd  # needed if and only if flashing boards
      # List desired non-Python packages here
      # Other potentially interesting packages from the NixOS package collection:
      #pkgs.gtkwave
      #pkgs.spyder
      #pkgs.R
      #pkgs.julia
    ];
  }

error message

$ nix-shell my-artiq-env.nix 
these derivations will be built:
  /nix/store/kaj9d5dbi9j0d6mqvl67cdx917890l8n-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-checkpoint.drv
  /nix/store/nwq7h383gvdm83i5m86awr8vmgb5rb38-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-output.drv
  /nix/store/acb7jrmbwz94lh80d64d2cyw9a7rzyk4-artiq-board-kasli-berkeley-6.7605.65f0951f.drv
building '/nix/store/kaj9d5dbi9j0d6mqvl67cdx917890l8n-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-checkpoint.drv'...
unpacking sources
unpacking source archive /nix/store/05s2fbg8z53q5kww7rj2sqjh5h7lqyab-artiq-board-kasli-berkeley-6.7605.65f0951f-gateware
source root is artiq-board-kasli-berkeley-6.7605.65f0951f-gateware
patching sources
configuring
no configure script, doing nothing
building
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
/etc/profile: line 16: /opt/Xilinx/Vivado/2020.1/settings64.sh: No such file or directory
** Message: 23:43:31.923: Requires Linux version >= 3.19 built with CONFIG_USER_NS
** Message: 23:43:31.927: Run: sudo sysctl -w kernel.unprivileged_userns_clone=1

** (process:304): ERROR **: 23:43:31.927: main: unshare: No space left on device
/nix/store/4y965wrv3shgg2s1ca431qpbrsb4dbag-stdenv-linux/setup: line 1301:    14 Trace/breakpoint trap   (core dumped) vivado -mode batch -source top_route.tcl
builder for '/nix/store/kaj9d5dbi9j0d6mqvl67cdx917890l8n-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-checkpoint.drv' failed with exit code 133
cannot build derivation '/nix/store/nwq7h383gvdm83i5m86awr8vmgb5rb38-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-output.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/acb7jrmbwz94lh80d64d2cyw9a7rzyk4-artiq-board-kasli-berkeley-6.7605.65f0951f.drv': 1 dependencies couldn't be built
error: build of '/nix/store/acb7jrmbwz94lh80d64d2cyw9a7rzyk4-artiq-board-kasli-berkeley-6.7605.65f0951f.drv' failed

Also, I guess I forgot to mention that I am also working with Ubuntu (most recent LTS).

choelzl

The commands I used are as follows for the artiq-full build:

nix-store -r /nix/store/nyssxsi99djad0mi8gdrvaa1ys42acpj-source 
nix-shell my-artiq-env.nix -I nixpkgs=/nix/store/nyssxsi99djad0mi8gdrvaa1ys42acpj-source

and for the Stuttgart build:

nix-store -r /nix/store/4qpa4g7aa0wcpyqkxlgf22f9fqdm4mnz-source
nix-shell my-artiq-env.nix -I nixpkgs=/nix/store/4qpa4g7aa0wcpyqkxlgf22f9fqdm4mnz-source

I tried also nix-channel --update in between the commands. I also tried with the commands from your post sb10q
For installing the nix-channels I used the exact same comments as jbroz
maybe you can clarify in which build the offending package is or what caused this error in the first place.

sb10q

There was a major nixpkgs rebuild recently and hydra hasn't updated yet. Run this:

nix-store -r /nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source  # from https://nixbld.m-labs.hk/eval/13394#tabs-inputs
nix-shell my-artiq-env.nix -I nixpkgs=/nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source

Will be properly fixed after flakes land.

jbroz

sb10q Now a different error:

$ nix-store -r /nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source  # from https://nixbld.m-labs.hk/eval/13394#tabs-inputs
these paths will be fetched (13.75 MiB download, 75.26 MiB unpacked):
  /nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source
copying path '/nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source' from 'https://cache.nixos.org'...
warning: you did not specify '--add-root'; the result might be removed by the garbage collector
/nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source

$ nix-shell my-artiq-env.nix -I nixpkgs=/nix/store/bd747bqh58d7kms96kp8kmyq0a6xq87c-source
copying path '/nix/store/l7p5fi0jkr33854a8kcz9jg6za7c4sb2-artiq-board-kasli-berkeley-6.7605.65f0951f-gateware.nar.base64' from 'https://nixbld.m-labs.hk'...
these derivations will be built:
  /nix/store/1bw3ww9fdskkhka0512q5zkpkzv3if8x-artiq-board-kasli-berkeley-6.7605.65f0951f.drv
  /nix/store/cwirjkp4bi3161lc2y78650aglnx24al-python3-3.8.8-env.drv
these paths will be fetched (32.22 MiB download, 199.71 MiB unpacked):
  /nix/store/0j2yai99ix5pq2jwy3hjwx31s6g4dn9p-libXft-2.3.3
  /nix/store/1daykc1r0wfh9d3r71dj5da25jvglcpr-qtwayland-5.15.2
  /nix/store/1mp991q6kxpc297hfchixhbzmfnya9dr-libGL-1.3.2
  /nix/store/1waaha9ax2nr660y9iz5zpdg67r2sfzj-pango-1.45.5
  /nix/store/20lw4zx8h7yakz8l55v6dwng7cp91v0w-gsettings-desktop-schemas-3.36.1
  /nix/store/2jrlvxb73xjyg9a3y4m5k5qmbbvlbf8q-qtbase-5.15.2
  /nix/store/2z2xs5cy30b03kgh7094pv4kmqm81mbs-libglvnd-1.3.2
  /nix/store/41ci1d9m4xg812gjapycxcdihpmhlwh3-libgudev-233
  /nix/store/4h900w4zwrmmixfjvkwpwn9lqs7zgpd1-python3-3.8.8-env
  /nix/store/4k3jj521lk92q15g5w9if8qhnz6h0yyx-epoxy-1.5.4
  /nix/store/554hjv7zxc7kd51m41jkll07rhjm0j29-cups-2.3.3-lib
  /nix/store/89ylj83fj84pjdy762a22q9hh277b6pl-python3.8-pyopengl-3.1.4
  /nix/store/9jp4jqpvigndwkf2ryz5r29d7wbg20jn-xkeyboard-config-2.27
  /nix/store/9xvlgbg8k90nmkk2wpps1iz7v4bb075a-python3.8-artiq-6.7605.65f0951f
  /nix/store/anrbg1b2k6b14cpywxni17rpbph6gmgq-python3.8-PyQt5-5.15.2-dev
  /nix/store/awf2ihlmkr72gkf8a0ipkgpgz35frvi2-libXtst-1.2.3
  /nix/store/b09spvmx1myiqn7jlilsr6y4zdvspqk6-python3.8-dbus-python-1.2.16
  /nix/store/bj34xkp7yww28gdnbizfnl17n7miyf4r-libXcursor-1.2.0
  /nix/store/bv8qz4wq447ljqfpzw6p7aq47lf8jrb2-libXdamage-1.1.5
  /nix/store/bzcn19w2d2j0fh0l02q4jwpdb2mkp2l9-libXxf86vm-1.1.4
  /nix/store/cw858mlymf5ssp71jbmq5vd8r2jriqvl-qtsvg-5.15.2
  /nix/store/d19ja0akpzzldz2csni9ahq1pzf3l2jv-libXi-1.7.10
  /nix/store/d5ajkmis3xfhxzai14vn48h37d1vkl5l-at-spi2-core-2.36.0
  /nix/store/dqabq6fi9yqhgbkgi27j97prq3wynp5k-libXrandr-1.5.2
  /nix/store/f4q534xwp2wz0pypr074jiq94vbs27is-libXfixes-5.0.3
  /nix/store/f655x17v8xajcjxwxbzwmc2qslaxnqya-libwacom-1.4.1
  /nix/store/fa5nzgcn9cmndl0264d78spps91wy87h-qtbase-5.15.2-bin
  /nix/store/fcr65nkrmq9hv7h1acxsdsald32acvjd-glu-9.0.1
  /nix/store/g3l8rif8c8zcxb3mxldy4mv9gjg6zysl-qtwebchannel-5.15.2
  /nix/store/gd73sr8avab76hrh0qip5x6v84q72pma-libXinerama-1.1.4
  /nix/store/gfip3n33lnd4k9kkp5zdv44njyxrmdpp-gtk+3-3.24.21
  /nix/store/gxcixyzdl3dxc54g6wrm8a7b3f4j6s89-atk-2.36.0
  /nix/store/h0byn3x35ydvc86znhcq3x3binlablhm-at-spi2-atk-2.34.2
  /nix/store/jk1z8scwis1hxw3m5czddlc9w23ciw51-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-output
  /nix/store/jlpaw25s3cwv0k9nimk7gxga6844mvsd-libinput-1.16.1
  /nix/store/jy35i7x84pvxn2ngvdq8hgpbqv76wly2-avahi-0.7
  /nix/store/k79bjwrszxl3ki5176q9v5v8m1kx820b-qtsvg-5.15.2-bin
  /nix/store/mcqw306z5s1pcvrzg906qwh0fd9dilg3-python3.8-pyqtgraph_qt5-0.11.0
  /nix/store/mrycb9zzkgj0n8hlf1h5yy2wdd8m048w-qtdeclarative-5.15.2-bin
  /nix/store/n0vfp1ij57khagq7g7l43njxqn3z8ac7-qtwayland-5.15.2-bin
  /nix/store/n4akv2iscskj9gmsdfwaw35s2a5vjq1p-dconf-0.36.0-lib
  /nix/store/pwfzj3437czcs4vs04nr20dn63c94f1z-dbus-1.12.20-lib
  /nix/store/rijqazlvihgh7zvi4yam1j9jjmahjm85-cairo-1.16.0
  /nix/store/rwzfjm8nm46x3y31lpqdl7ws5js0ka4m-libXrender-0.9.10
  /nix/store/s58rvlhfrrb2040sj280ddbnix9wing8-freeglut-3.2.1
  /nix/store/sc75kv2fd8vpn71wwhvr4q41vfp11laj-python3.8-dbus-python-1.2.16-dev
  /nix/store/sdb5rvjfxg3n8pm2fawv359idibwvnad-libX11-1.6.12
  /nix/store/ss8889im9lajbbs57ksnxadhzbg3j2rw-libXext-1.3.4
  /nix/store/vkihakvawlkhnwzvsljg06p5w62glc7d-python3.8-qasync-0.10.0
  /nix/store/vsjwwf2nkqmidacak18mh83n7qgg0pdx-artiq-board-kasli-berkeley-6.7605.65f0951f
  /nix/store/wwq1yxdni7q0ygagvcyhy2yw459h4r8x-python3.8-PyQt5-5.15.2
  /nix/store/wyqk0csmxjmnddgnd57jm9l5v7l1q271-harfbuzz-2.7.1
  /nix/store/xhcgz5lghj272kn77bxxfvslygwaf6ky-qtdeclarative-5.15.2
  /nix/store/xhd34m1zj4340i33d92j3rnh6y9pzs80-qtquickcontrols-5.15.2
  /nix/store/xjxlzzxc8nkxf6a38dph5qbvypavbrgb-mesa-20.1.10
  /nix/store/xrbddcb96mbg04hna58vypnb9i2cax30-libxkbcommon-0.10.0
  /nix/store/xy0n1d0cqzyy5n125ar6l6n004hvbrcb-libXcomposite-0.4.5
  /nix/store/zf82w8pc3ykxn4rjrqp4nhhkqfqr2hb5-gdk-pixbuf-2.40.0
copying path '/nix/store/jk1z8scwis1hxw3m5czddlc9w23ciw51-artiq-board-kasli-berkeley-6.7605.65f0951f-vivado-output' from 'https://nixbld.m-labs.hk'...
copying path '/nix/store/gxcixyzdl3dxc54g6wrm8a7b3f4j6s89-atk-2.36.0' from 'https://cache.nixos.org'...
copying path '/nix/store/n4akv2iscskj9gmsdfwaw35s2a5vjq1p-dconf-0.36.0-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/zf82w8pc3ykxn4rjrqp4nhhkqfqr2hb5-gdk-pixbuf-2.40.0' from 'https://cache.nixos.org'...
copying path '/nix/store/20lw4zx8h7yakz8l55v6dwng7cp91v0w-gsettings-desktop-schemas-3.36.1' from 'https://cache.nixos.org'...
copying path '/nix/store/wyqk0csmxjmnddgnd57jm9l5v7l1q271-harfbuzz-2.7.1' from 'https://cache.nixos.org'...
copying path '/nix/store/sdb5rvjfxg3n8pm2fawv359idibwvnad-libX11-1.6.12' from 'https://cache.nixos.org'...
copying path '/nix/store/41ci1d9m4xg812gjapycxcdihpmhlwh3-libgudev-233' from 'https://cache.nixos.org'...
copying path '/nix/store/pwfzj3437czcs4vs04nr20dn63c94f1z-dbus-1.12.20-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/xy0n1d0cqzyy5n125ar6l6n004hvbrcb-libXcomposite-0.4.5' from 'https://cache.nixos.org'...
copying path '/nix/store/jy35i7x84pvxn2ngvdq8hgpbqv76wly2-avahi-0.7' from 'https://cache.nixos.org'...
copying path '/nix/store/ss8889im9lajbbs57ksnxadhzbg3j2rw-libXext-1.3.4' from 'https://cache.nixos.org'...
copying path '/nix/store/554hjv7zxc7kd51m41jkll07rhjm0j29-cups-2.3.3-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/f4q534xwp2wz0pypr074jiq94vbs27is-libXfixes-5.0.3' from 'https://cache.nixos.org'...
copying path '/nix/store/d19ja0akpzzldz2csni9ahq1pzf3l2jv-libXi-1.7.10' from 'https://cache.nixos.org'...
copying path '/nix/store/bv8qz4wq447ljqfpzw6p7aq47lf8jrb2-libXdamage-1.1.5' from 'https://cache.nixos.org'...
copying path '/nix/store/gd73sr8avab76hrh0qip5x6v84q72pma-libXinerama-1.1.4' from 'https://cache.nixos.org'...
copying path '/nix/store/rwzfjm8nm46x3y31lpqdl7ws5js0ka4m-libXrender-0.9.10' from 'https://cache.nixos.org'...
copying path '/nix/store/awf2ihlmkr72gkf8a0ipkgpgz35frvi2-libXtst-1.2.3' from 'https://cache.nixos.org'...
copying path '/nix/store/bj34xkp7yww28gdnbizfnl17n7miyf4r-libXcursor-1.2.0' from 'https://cache.nixos.org'...
copying path '/nix/store/d5ajkmis3xfhxzai14vn48h37d1vkl5l-at-spi2-core-2.36.0' from 'https://cache.nixos.org'...
copying path '/nix/store/0j2yai99ix5pq2jwy3hjwx31s6g4dn9p-libXft-2.3.3' from 'https://cache.nixos.org'...
copying path '/nix/store/h0byn3x35ydvc86znhcq3x3binlablhm-at-spi2-atk-2.34.2' from 'https://cache.nixos.org'...
copying path '/nix/store/dqabq6fi9yqhgbkgi27j97prq3wynp5k-libXrandr-1.5.2' from 'https://cache.nixos.org'...
copying path '/nix/store/bzcn19w2d2j0fh0l02q4jwpdb2mkp2l9-libXxf86vm-1.1.4' from 'https://cache.nixos.org'...
copying path '/nix/store/2z2xs5cy30b03kgh7094pv4kmqm81mbs-libglvnd-1.3.2' from 'https://cache.nixos.org'...
copying path '/nix/store/f655x17v8xajcjxwxbzwmc2qslaxnqya-libwacom-1.4.1' from 'https://cache.nixos.org'...
copying path '/nix/store/rijqazlvihgh7zvi4yam1j9jjmahjm85-cairo-1.16.0' from 'https://cache.nixos.org'...
copying path '/nix/store/fcr65nkrmq9hv7h1acxsdsald32acvjd-glu-9.0.1' from 'https://cache.nixos.org'...
copying path '/nix/store/1mp991q6kxpc297hfchixhbzmfnya9dr-libGL-1.3.2' from 'https://cache.nixos.org'...
copying path '/nix/store/jlpaw25s3cwv0k9nimk7gxga6844mvsd-libinput-1.16.1' from 'https://cache.nixos.org'...
copying path '/nix/store/4k3jj521lk92q15g5w9if8qhnz6h0yyx-epoxy-1.5.4' from 'https://cache.nixos.org'...
copying path '/nix/store/s58rvlhfrrb2040sj280ddbnix9wing8-freeglut-3.2.1' from 'https://cache.nixos.org'...
copying path '/nix/store/xjxlzzxc8nkxf6a38dph5qbvypavbrgb-mesa-20.1.10' from 'https://cache.nixos.org'...
copying path '/nix/store/1waaha9ax2nr660y9iz5zpdg67r2sfzj-pango-1.45.5' from 'https://cache.nixos.org'...
copying path '/nix/store/b09spvmx1myiqn7jlilsr6y4zdvspqk6-python3.8-dbus-python-1.2.16' from 'https://cache.nixos.org'...
copying path '/nix/store/89ylj83fj84pjdy762a22q9hh277b6pl-python3.8-pyopengl-3.1.4' from 'https://cache.nixos.org'...
copying path '/nix/store/sc75kv2fd8vpn71wwhvr4q41vfp11laj-python3.8-dbus-python-1.2.16-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/9jp4jqpvigndwkf2ryz5r29d7wbg20jn-xkeyboard-config-2.27' from 'https://cache.nixos.org'...
copying path '/nix/store/xrbddcb96mbg04hna58vypnb9i2cax30-libxkbcommon-0.10.0' from 'https://cache.nixos.org'...
copying path '/nix/store/gfip3n33lnd4k9kkp5zdv44njyxrmdpp-gtk+3-3.24.21' from 'https://cache.nixos.org'...
copying path '/nix/store/2jrlvxb73xjyg9a3y4m5k5qmbbvlbf8q-qtbase-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/fa5nzgcn9cmndl0264d78spps91wy87h-qtbase-5.15.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/xhcgz5lghj272kn77bxxfvslygwaf6ky-qtdeclarative-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/cw858mlymf5ssp71jbmq5vd8r2jriqvl-qtsvg-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/mrycb9zzkgj0n8hlf1h5yy2wdd8m048w-qtdeclarative-5.15.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/xhd34m1zj4340i33d92j3rnh6y9pzs80-qtquickcontrols-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/k79bjwrszxl3ki5176q9v5v8m1kx820b-qtsvg-5.15.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/1daykc1r0wfh9d3r71dj5da25jvglcpr-qtwayland-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/g3l8rif8c8zcxb3mxldy4mv9gjg6zysl-qtwebchannel-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/n0vfp1ij57khagq7g7l43njxqn3z8ac7-qtwayland-5.15.2-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/wwq1yxdni7q0ygagvcyhy2yw459h4r8x-python3.8-PyQt5-5.15.2' from 'https://cache.nixos.org'...
copying path '/nix/store/anrbg1b2k6b14cpywxni17rpbph6gmgq-python3.8-PyQt5-5.15.2-dev' from 'https://cache.nixos.org'...
copying path '/nix/store/mcqw306z5s1pcvrzg906qwh0fd9dilg3-python3.8-pyqtgraph_qt5-0.11.0' from 'https://nixbld.m-labs.hk'...
copying path '/nix/store/vkihakvawlkhnwzvsljg06p5w62glc7d-python3.8-qasync-0.10.0' from 'https://nixbld.m-labs.hk'...
copying path '/nix/store/9xvlgbg8k90nmkk2wpps1iz7v4bb075a-python3.8-artiq-6.7605.65f0951f' from 'https://nixbld.m-labs.hk'...
error 10 while decompressing xz file
cannot build derivation '/nix/store/cwirjkp4bi3161lc2y78650aglnx24al-python3-3.8.8-env.drv': 1 dependencies couldn't be built
error: build of '/nix/store/cwirjkp4bi3161lc2y78650aglnx24al-python3-3.8.8-env.drv' failed

sb10q

I have never seen this issue. Could be some possibly intermittent network connectivity issues, please try again.
Also the Hydra builds have updated now, you do not need the -I nixpkgs=... hack anymore. And run another channel update.

jbroz

sb10q Success! thanks