What is guix-package-cache ?

[Edouard Klein]

Hi all !

I'm working on packaging some software. Because I'm not done submitting
my patches to the official guix, but I still need to use my new packages
I've created a git repo where I push my edits.

I've created a channel to use this git repo instead of the official guix
repo.

When I tried to run git pull, I got:


The following derivation will be built:
   /gnu/store/saxml7kzw0ndy0s76483gwxhsxm27ybh-profile.drv
The following profile hook will be built:
   /gnu/store/ggkmzkjw6bj75kq45k7p9bv33si8k66f-guix-package-cache.drv
building package cache...
/builder for 
`/gnu/store/ggkmzkjw6bj75kq45k7p9bv33si8k66f-guix-package-cache.drv' failed to 
produce output path 
`/gnu/store/ljadsvwvqfq7hv6kxr02d3fihgzi8wr6-guix-package-cache'
build of /gnu/store/ggkmzkjw6bj75kq45k7p9bv33si8k66f-guix-package-cache.drv 
failed
View build log at 
'/var/log/guix/drvs/gg/kmzkjw6bj75kq45k7p9bv33si8k66f-guix-package-cache.drv.bz2'.
cannot build derivation 
`/gnu/store/saxml7kzw0ndy0s76483gwxhsxm27ybh-profile.drv': 1 dependencies 
couldn't be built
guix pull: error: build of 
`/gnu/store/saxml7kzw0ndy0s76483gwxhsxm27ybh-profile.drv' failed


The log says:
(repl-version 0 1 1)
Generating package cache for 
'/gnu/store/zdv0j5x5dfwr4b6bh8jc9vp818lvd38g-profile'...
(exception unbound-variable (value #f) (value "Unbound variable: ~S") (value 
(python2-prompt-toolkit-1)) (value #f))


python2-prompt-toolkit-1 is a package I removed in the last push in my
channel because no other package
uses it. I did not install it, nor anything that depend on it (because
nothing depends on it).

I don't understand why guix feels the need to try to build it.

I grepped for 'guix-package-cache' and tried to read the code in
guix/channels.scm, but I don't understand.

Does anybody have any pointers ?

Cheers,

Edouard.