query for package updates

query for package updates

[Reza Alizadeh Majd]

Hi, 

I'm working on a cron job to perform `guix pull` periodically and inform users
about available updates. previously it was suggested to use `guix package -u -n`
to find if any update is available.

the problem is that also when I run the `guix package -u` to update the profile
my cron job still informs me about existence of new updates and the result of
`guix package -u -n` doesn't change. 

could anyone help me on this matter, or an alternate solution to check if any
update is available ( and get the list if it's possible )?

--
Regards
Reza Alizadeh Majd
PantherX Team

Re: query for package updates

[Pierre Neidhardt]

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Hi,

`guix package -u` will keep updating ad-hoc profiles (those that where
not generated exclusively with a manifest) if they contain packages with
propagated inputs, even if the profile is already up-to-date.

This has been discussed in the past, but for now it's not clear if this
issue will be resolved.

-- 
Pierre Neidhardt
https://ambrevar.xyz/

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Re: query for package updates

[Reza Alizadeh Majd]

Hi, 

> `guix package -u` will keep updating ad-hoc profiles (those that where
> not generated exclusively with a manifest) if they contain packages with
> propagated inputs, even if the profile is already up-to-date.
> 

so you mean that I can't rely on `guix package -u -n` command results to
determine if any new update is available for current user's profile? 


> This has been discussed in the past, but for now it's not clear if this
> issue will be resolved.
> 

is there any public reference available about this discussion? 


-- 
Regards
Reza Alizadeh Majd
PantherX Team

Re: query for package updates

[Pierre Neidhardt]

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https://issues.guix.gnu.org/issue/31142

-- 
Pierre Neidhardt
https://ambrevar.xyz/

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Re: query for package updates

[Reza Alizadeh Majd]

playing with the Guix sources, I wrote following Guile script in order to
check available updates for a profile.

Is it suitable for this purpose or I need to include additional checks
on my script? 


(define-module (px tools updater)
  #:use-module (guix profiles)
  #:use-module (guix utils)
  #:use-module (srfi srfi-1)
  #:export (check-entry
            check-manifest
            check-profile))

(define (check-entry entry manifest)
  "Recursive update check for a manifest entry"
  (let* ((pattern (manifest-pattern
                    (name (manifest-entry-name entry))
                    (output (manifest-entry-output entry))))
         (previous (manifest-lookup manifest pattern))
         (newer? (and previous
                      (version>? (manifest-entry-version entry)
                                 (manifest-entry-version previous)))))
    (fold (lambda (child-entry result)
            (or result
                (check-entry child-entry manifest)))
      newer? (manifest-entry-dependencies entry))))


(define (check-manifest manifest)
  "Check if any update available for a manifest"
  (fold (lambda (entry previous)
          (or previous (check-entry entry manifest)))
    #f (manifest-entries manifest)))


(define* (check-profile #:optional (profile %current-profile))
  "Check if any update is available for a profile"
  (let ((manifest (profile-manifest profile)))
    (check-manifest manifest)))


-- 
Regards
Reza Alizadeh Majd
PantherX Team

Re: query for package updates

[Reza Alizadeh Majd]

Just wanted to ping this up/

does anyone have any suggestion about following script, that I wrote
to check about available package updates for a profile? 


On Thu, Mar 12, 2020, at 1:00 AM, Reza Alizadeh Majd wrote:
> playing with the Guix sources, I wrote following Guile script in order to
> check available updates for a profile.
> 
> Is it suitable for this purpose or I need to include additional checks
> on my script? 
> 
> 
> (define-module (px tools updater)
>   #:use-module (guix profiles)
>   #:use-module (guix utils)
>   #:use-module (srfi srfi-1)
>   #:export (check-entry
>             check-manifest
>             check-profile))
> 
> (define (check-entry entry manifest)
>   "Recursive update check for a manifest entry"
>   (let* ((pattern (manifest-pattern
>                     (name (manifest-entry-name entry))
>                     (output (manifest-entry-output entry))))
>          (previous (manifest-lookup manifest pattern))
>          (newer? (and previous
>                       (version>? (manifest-entry-version entry)
>                                  (manifest-entry-version previous)))))
>     (fold (lambda (child-entry result)
>             (or result
>                 (check-entry child-entry manifest)))
>       newer? (manifest-entry-dependencies entry))))
> 
> 
> (define (check-manifest manifest)
>   "Check if any update available for a manifest"
>   (fold (lambda (entry previous)
>           (or previous (check-entry entry manifest)))
>     #f (manifest-entries manifest)))
> 
> 
> (define* (check-profile #:optional (profile %current-profile))
>   "Check if any update is available for a profile"
>   (let ((manifest (profile-manifest profile)))
>     (check-manifest manifest)))
> 
> 
> -- 
> Regards
> Reza Alizadeh Majd
> PantherX Team
> 
>

-- 
Regards
Reza Alizadeh Majd
PantherX Team

Re: query for package updates

[Pierre Neidhardt]

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Hi Reza,

I tried running your script and it never reports updates.
I am not completely sure about the API but I believe that you need to
check the version of the entry of the package, not of the corresponding
package in the manifest, or else you'll always find the same package
version.

The second issue is that you are only comparing version numbers, while
packages can also get updated because the derivation has changed
(e.g. some input has been updated).

I don't know the API for that but my guess is that you could start
inspecting guix/scripts/package.scm.

Good luck!

-- 
Pierre Neidhardt
https://ambrevar.xyz/

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