[Yum-devel] [PATCH][RFC] Add skip-broken to YumBase

[Tim Lauridsen]

I have created at patch to add skip-broken functionality to YumBase.

I works the following way:
1. I have added some code to the depsolver to store packages with 
problems in the self.po_with_problems dict. So we have the po with 
problems when the depsolving is completed.
2. I have added a extra 'skip-broken' parameter to 
YumBase.buildTransaction to control if we want to skip packages with 
problem from the transaction. (default = no)
3. if the skip-broken parameter is True, then we do

    While "There is problems"
        Remove the packages from the transaction
        Depsolve

It will remove packages with problem from the transaction and desolve 
again until all problems are gone or the transaction is empty.

I have attached a test script and some test packages to provoke dep errors.

foo-1.0-1.fc8.noarch.rpm:

Requires: foobar > 1.1.0 ( This should fails always )

bar-1.0-1.fc8.noarch.rpm:

Requires: bar ( This should fails if foo is not in the transaction )

# sudo python test-skipbroken.py
Will do normal depsolvning and report depsolve error.

# sudo python test-skipbroken.py --skip-broken
Will first remove the foo packages, because nothing provides foobar.
Then bar will fail because there is no longer anything providing foo.
bar will be removed and the transaction will complete.

to test how it look when all packages is removed, just comment out
txmbr = yb.install(name='BackupPC')

and run
# sudo python test-skipbroken.py --skip-broken

Tim





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