Hello,

As this is my debut posting I just wanted to start b= y thanking the GUIX community for all your hard work! :-)<= /p>

I’ve been working on a project to evaluate GUI= X using a process that involves frequent rebuilds/re-installs, and followin= g a rebuild of my testbed hosts on Monday I found that “guix offload = test” no longer worked for me. It is now failing as shown below, and notably it fails with a different error message on the= first attempt than the latter ones:

$ guix offload test /etc/guix/machines.scm g= uixbuild03.foo.bar.com

guix offload: testing 1 build machines defin= ed in '/etc/guix/machines.scm'...

guix offload: 'guixbuild03.foo.bar.com' is r= unning guile (GNU Guile) 2.2.2

guix offload: error: failed to use Guix modu= le on 'guixbuild03.foo.bar.com' (test returned #<unspecified>)

$ guix offload test /etc/guix/machines.scm g= uixbuild03.foo.bar.com

guix offload: testing 1 build machines defin= ed in '/etc/guix/machines.scm'...

guix offload: 'guixbuild03.foo.bar.com' is r= unning guile (GNU Guile) 2.2.2

Backtrace:

&n= bsp; 7 (primitive-load "/gnu/store/pwny051w3gd1rry5bs1vyw5= r7bj…")

In guix/ui.scm:

1384:12 6 (run-guix-command _ .= _)

In ice-9/boot-9.scm:

837:9 5 (catch srfi= -34 #<procedure 26a71c0 at guix/ui.scm:460:…> …)

837:9 4 (catch syst= em-error #<procedure 26a71e0 at guix/script…> …)

In guix/scripts/offload.scm:

615:6 3 (check-mach= ine-availability _ _)

In srfi/srfi-1.scm:

656:11 2 (for-each #<p= rocedure assert-node-has-guix (node name)> …)

In guix/scripts/offload.scm:

547:2 1 (assert-nod= e-has-guix #<node guixuser@guixbuild03.nyc…> …)

In ssh/dist/node.scm:

397:8 0 (node-eval = #<node guixuser@guixbuild03.foo.bar.com…> …)

ssh/dist/node.scm:397:8: In procedure node-e= val:

ssh/dist/node.scm:397:8: Throw to key `node-= repl-error' with args `("Evaluation failed" "scheme@(guile-u= ser)> ERROR: In procedure display:\nERROR: In procedure display: Wrong type argument in position 2: #<closed: file ad5e00>&q= uot; ())'.

Digging into this further with the help of strace I = see how the "guile --listen=3D37146" process is getting started o= n the build machine by way of ssh, and I can see that guile successfully pr= ocesses commands received on the first incoming TCP connection to port 37146, but that commands received in subsequent TCP= connections fail with the "#<closed: file xxxxxx>" error. = I was able to simulate this on the CLI by running the following on the &quo= t;build-machine" host:

In one shell:

$ sudo -u guixuser guix environment

[guixuser@guixbuild03 guix]$ bash -c "n= ohup guile --listen=3D37146 0<&- &>/dev/null"=

... and then from another shell on this same host:

$ telnet localhost 37146

Trying 127.0.0.1...

Connected to localhost.

Escape character is '^]'.<= /p>

GNU Guile 2.2.2

Guile comes with ABSOLUTELY NO WARRANTY; for= details type `,show w'.

This program is free software, and you are w= elcome to redistribute it

under certain conditions; type `,show c' for= details.

Enter `,help' for help.

scheme@(guile-user)> (begin

&n= bsp; &nbs= p; (use-modules (guix))

&n= bsp; = ; (with-store store

&n= bsp; = ; (add-text-to-store store "test"

&n= bsp; = ; &n= bsp; "Hell= o, build machine!")))

acquiring global GC lock `/var/guix/gc.lock'=

acquiring read lock on `/var/guix/temproots/= 17043'

acquiring write lock on `/var/guix/temproots= /17043'

downgrading to read lock on `/var/guix/tempr= oots/17043'

$1 =3D "/gnu/store/883yjkl46dxw9mzykykm= bs0yzwyxm17z-test"

scheme@(guile-user)> ,q=

Connection closed by foreign host.

$ telnet localhost 37146

Trying 127.0.0.1...

Connected to localhost.

Escape character is '^]'.<= /p>

GNU Guile 2.2.2

Guile comes with ABSOLUTELY NO WARRANTY; for= details type `,show w'.

This program is free software, and you are w= elcome to redistribute it

under certain conditions; type `,show c' for= details.

Enter `,help' for help.

scheme@(guile-user)> (begin

&n= bsp; &nbs= p; (use-modules (guix))

&n= bsp; = ; (with-store store

&n= bsp; = ; (add-text-to-store store "test"

&n= bsp; = ; &n= bsp; "Hell= o, build machine!")))

ERROR: In procedure display:

ERROR: In procedure display: Wrong type argu= ment in position 2: #<closed: file c98f50>

Entering a new prompt. Type `,bt' for = a backtrace or `,q' to continue.

scheme@(guile-user) [1]>

Has anyone seen this problem? I've pored over the ma= iling lists and documentation and most of the similar problems involved inc= orrect paths and environment variables, but in this case I'm pretty certain= I've got that part right, especially as this was working for me last week. Regardless, here are what I hope are= the relevant variables:

[guixuser@guixbuild03 guix]$ echo $PATH=

/var/guix/profiles/per-user/root/guix-profil= e/bin:/var/guix/profiles/per-user/root/guix-profile/sbin:/usr/local/bin:/us= r/bin:/usr/local/sbin:/usr/sbin

[guixuser@guixbuild03 guix]$ which guix=

/var/guix/profiles/per-user/root/guix-profil= e/bin/guix

[guixuser@guixbuild03 guix]$ which guile

/var/guix/profiles/per-user/root/guix-profil= e/bin/guile

[guixuser@guixbuild03 guix]$ env | grep GUIL= E

GUILE_LOAD_COMPILED_PATH=3D/gnu/store/bcmf06= k2n1pfwqkzpclvvc3w9jdfi71a-guile-json-0.6.0/lib/guile/2.2/site-ccache:/gnu/= store/66dp9mxn43jkhhrpcy6v5cdqibbl4bjc-gnutls-3.5.13/lib/guile/2.2/site-cca= che:/gnu/store/hxc46s4d98c9s5v8jpg7fhbsn011ch74-guile-git-0.0-3.e156a10/lib= /guile/2.2/site-ccache:/gnu/store/0lv9jjhalrz65m358ynyk2366wshcd1n-guile-ss= h-0.11.2/lib/guile/2.2/site-ccache:/var/guix/profiles/per-user/root/guix-pr= ofile/lib/guile/2.2/site-ccache:/var/guix/profiles/per-user/root/guix-profi= le/share/guile/site/2.2:/var/guix/profiles/per-user/root/guix-profile/lib/g= uile/2.2/site-ccache

GUILE_LOAD_PATH=3D/gnu/store/bcmf06k2n1pfwqk= zpclvvc3w9jdfi71a-guile-json-0.6.0/share/guile/site/2.2:/gnu/store/66dp9mxn= 43jkhhrpcy6v5cdqibbl4bjc-gnutls-3.5.13/share/guile/site/2.2:/gnu/store/hxc4= 6s4d98c9s5v8jpg7fhbsn011ch74-guile-git-0.0-3.e156a10/share/guile/site/2.2:/= gnu/store/0lv9jjhalrz65m358ynyk2366wshcd1n-guile-ssh-0.11.2/share/guile/sit= e/2.2:/var/guix/profiles/per-user/root/guix-profile/share/guile/site/2.2:/v= ar/guix/profiles/per-user/root/guix-profile/share/guile/site/2.2=

[guixuser@guixbuild03 guix]$ env | grep GUIX=

GUIX_LOCPATH=3D/var/guix/profiles/per-user/r= oot/guix-profile/lib/locale

GUIX_ENVIRONMENT=3D/gnu/store/49gp32rmsly4fs= 548b69iqvmn1gjck6k-profile

[guixuser@guixbuild03 guix]$

You’ll note that I’m having “guixu= ser” use the default “root” user’s profile – = strace doesn’t reveal any failed attempts to write to the root profil= e by “guixuser” so I’m not thinking this would be a probl= em, but just wanted to highlight this in case it was relevant.

Many thanks in advance for your help!

- Michael