common/Scripts: add check_update function to helper.sh

[joebonrichie]

Summary

• for quick anitya monitoring of a single package

Test Plan

source script in environment and run check_update on a bunch of packages

Checklist

• Package was built and tested against unstable

[davidjharder]

How much of a pain is it to write fish and zsh versions?

Seems there is no good way to call a bash function from within the fish shell

[silkeh]

How much of a pain is it to write fish and zsh versions?
Seems there is no good way to call a bash function from within the fish shell

I'd make it a separate script instead and call that from all three helper functions.

[ermo]

The code in itself is sound.

However, it would be way more useful if the actual logic was made into a standalone script, which is then called from the various helper scripts via a function.

Do you have any appetite for doing this rewrite?

[malfisya]

With ent landing in repository, wouldn't that supersede this PR?

[ermo]

With ent landing in repository, wouldn't that supersede this PR?

Only once ent begins supporting checking for updates per package?

[malfisya]

Only once ent begins supporting checking for updates per package?

ent can check per package (provided it has monitoring.yml, of course). Just navigate to a package directory, say systemd:

░▒▓    …/packages/s/systemd   main  󰥔 19:52                                                                                                                      
❯ go-task updatecheck                                                                                                                                                   
task: [updatecheck] ent check updates                                                                                                                                   
Checking for updates...                                                                                                                                                 
                                                                                                                                                                        
Total packages to update: 1                                                                                                                                             
                                                                                                                                                                        
Package Current Latest                                                                                                                                                  
------- ------ ---                                                                                                                                                      
systemd 254.21 257                                                                                                                                                      
                                                                                                                                                                        
░▒▓    …/packages/s/systemd   main  󰥔 19:52                                                                                                                      
❯ ent check updates                                                                                                                                                     
Checking for updates...                                                                                                                                                 
                                                                                                                                                                        
Total packages to update: 1                                                                                                                                             
                                                                                                                                                                        
Package Current Latest                                                                                                                                                  
------- ------ ---                                                                                                                                                      
systemd 254.21 257                                                                                                                                                      
                                                                                                                                                                        
░▒▓    …/packages/s/systemd   main  󰥔 19:52                                                                                                                      
❯ 

[ermo]

Closing as this functionality is superseded by Serpent's ent tool.

Thank you nonetheless @joebonrichie ! 💪