Hi!
I'm trying to use COIN to solve a MixedIntegerLinearProgram in sage.
When I get to the command
sage: p.solve(solver="Coin")
I get an error saying "Coin/CBC is not installed and cannot be used
to solve this MixedIntegerLinearProgram. To install it, you can type
in Sage: install_package('cbc')"
However, I have installed Coin/CBC. And in fact, if I try the command
sage: install_package('cbc')
I get an error saying " Package is already installed." So one part of
sage thinks it is installed, while another does not!
Any help on resolving this issue would be greatly appreciated. The
sage install is a source install on an ubuntu server.
-Tyler
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