tree 26c03781a2a71d1a12c342e1cf4e8c12194ee2f2
parent 030e2fc8ba6cf6c28b582c9ccbb5343ece887776
author Zac Medico <zmedico@gentoo.org> 1611048230 -0800
committer Zac Medico <zmedico@gentoo.org> 1611054173 -0800
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binarytree.move_ent: copy on write for package move

Copy on write when applying package moves, and silently
skip package moves when the same move has already been
applied to the same build of the package. Since the old
package instance is preserved, it avoids the problem
of having entries for deleted packages remain in the
package index. We can simply assume that the package
will be deleted by eclean-pkg when its time comes.

Bug: https://bugs.gentoo.org/766012
Signed-off-by: Zac Medico <zmedico@gentoo.org>