[wpkg-users] Execute Once / Always

[Tomasz Chmielewski]

Michael J. Kidd wrote:
> Ok..
>   From what I've read on the wpkg.org site ( specifically the 
> packages.xml page ), it seems that as long as "execute='once'" is not 
> declared, and there are not any <checks... /> then the package will be 
> executed every time.

Indeed, that page fails to explain "execute='once'" ("always" was added 
later as I remember).


> But, on another page on the wpkg.org site, it says to use 
> "execute='always'" to accomplish this outcome.

What page is that? I'd like to update the docs.


> My personal experience goes along with the first exmple ( no 'once' and 
> no 'checks' ).  What is the way wpkg.js is "supposed" to handle this?

There is a difference between "once", "always", and no always/once + no 
checks.

Here's a quick explanation (assuming there are no "check" conditions):

1) once - execute the package once, add it to wpkg.xml

2) always - execute the package always, add it to wpkg.xml

3) no once/always and no check condition

In this case, wpkg.js will execute all "install" commands, and in the 
end will fail with "Could not install package_name". Failed checking 
after installation.".
Nothing will get added to wpkg.xml, and you won't know if it was ever 
executed, or not.


-- 
Tomasz Chmielewski
http://wpkg.org






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