What is guix-package-cache ?

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.

Re: What is guix-package-cache ?

[Tobias Geerinckx-Rice]

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Afternoon Edouard,

Edouard Klein 写道：
> I don't understand why guix feels the need to try to build it.

So Guix isn't trying to build any packages (yet), just complaining 
that you're still using python2-prompt-toolkit-1 somewhere.  I'm 
inclined to believe it:

> 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))

Does ‘find -name \*.scm -exec grep python2-prompt-toolkit-1 {} +’ 
in your channel's directory return anything useful?

Are there any uncommitted changes to your channel(s) that ‘guix 
pull’ can't see yet?

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

It's a simple cache of package metadata from your channel(s) to 
speed up future Guix operations.  I doubt it's related to your 
problem; it's just what happened to fail first.

Kind regards,

T G-R

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Re: What is guix-package-cache ?

[Edouard Klein]

Hi Tobias,


Tobias Geerinckx-Rice writes:

> Afternoon Edouard,
>
> Edouard Klein 写道：
>> I don't understand why guix feels the need to try to build it.
>
> So Guix isn't trying to build any packages (yet), just complaining that you're
> still using python2-prompt-toolkit-1 somewhere.  I'm inclined to believe it:
>
>> 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))
>
> Does ‘find -name \*.scm -exec grep python2-prompt-toolkit-1 {} +’ in your
> channel's directory return anything useful?
>

It does, it turns out that two packages are still using
python2-prompt-toolkit-1. I was certain that I grepped that to make sure
but I obviously messed up somehow.

Thank you very much for your help, and my apologies for the noise.


> Are there any uncommitted changes to your channel(s) that ‘guix pull’ can't see
> yet?
>
>> I grepped for 'guix-package-cache' and tried to read the code in
>> guix/channels.scm, but I don't understand.
>
> It's a simple cache of package metadata from your channel(s) to speed up future
> Guix operations.  I doubt it's related to your problem; it's just what happened
> to fail first.
>
> Kind regards,
>
> T G-R