-package-name foo Tells GHC the the module being compiled forms part of package foo. If this flag is omitted (a very common case) then the default
The ghc documentation at http://www.haskell.org/ghc/docs/latest/html/users_guide/packages.html says the following: package main is assumed.
Note: the argument to -package-name should be the full package
identifier for the package, that is it should include the version number. For example: -package mypkg-1.2. I observe that the example uses -package rather than -package-name, and wonder if this is a mistake. Moreover, when I attempt to use the flag, like so: $ ghc -package-name hat-2.06 ... <command line>: cannot parse 'hat-2.06' as a package identifier This used to work with ghc-6.6.x and ghc-6.8.x, but seems to have stopped working with ghc-6.10.x. I surmise that the leading zero after the version point separator is to blame? It seems an unfortunate regression. Regards, Malcolm