虛擬套件：libghc-dual-tree-dev-0.2.3.1-b2c99

This is a virtual package. See the Debian policy for a definition of virtual packages.

負責填實 libghc-dual-tree-dev-0.2.3.1-b2c99 的套件

libghc-dual-tree-dev

Rose trees with cached and accumulating monoidal annotations