questions on package management

[lee]

Hi,

imagine you have the following:


package A, depends on C, installed
package B, depends on C, not installed
package C, installed


All the packages are version 1.  After a while, you install package B,
and in the meantime, package B has been updated to version 2 so that it
now depends on version 2 of package C.

What will happen?


+ install B and update A and C?
+ install B and update C and leave A as is?
+ something else?


Another question: It is possible to have version 1 and version 2 of
package A installed at the same time, like version 1 from Fedora 17 and
version 2 from Fedora 18.  Imagine this package A provides a file
'/bin/ls'.

Which version of '/bin/ls' will be the one in use?  What about
compatibility issues in such a case?

(Please don't say it's not possible; I have had it happen.)


-- 
Fedora 18