Dear All,<br><br>There was recently a discussion on haskell-cafe (<a href="http://www.mail-archive.com/haskell-cafe@haskell.org/msg86472.html">http://www.mail-archive.com/haskell-cafe@haskell.org/msg86472.html</a>) about licenses of libraries such as hmatrix and the combination of various different licences.<br>
<br>One question was about per-package versus by-file licenses:<br><br>In Haskell the compilation unit is the module, and the per-file cabal header allows for a license field.  It seems then that a package should be the least restrictive combination of all the licenses in all the contained modules.  If this has to become a hand-coded fancy function of various GPLx, BSDy, OpenSource, and other licenses then so be it.  That is the legal reality.  And use of a BSD3 module in hmatrix that does not depend upon GPL&#39;d GSL modules would be acceptable.<br>
<br>In short, I argue for a per-file(module) license regime.<br><br>Vivian<br>