#889: Add option to list recursive dependencies of a package along with their
licenses
---------------------------------+------------------------------------------
Reporter: joeyadams | Owner:
Type: enhancement | Status: new
Priority: normal | Milestone:
Component: cabal-install tool | Version: HEAD
Severity: normal | Keywords:
Difficulty: unknown | Ghcversion:
Platform: |
---------------------------------+------------------------------------------
It should be possible to list all of the dependencies of a package,
including their licenses. This would be useful for:
* Developers writing proprietary applications.
* Developers who don't want their liberally-licensed libraries to be
"upgraded" to the GPL or similar by subtle dependencies.
Attached is a simple patch that makes cabal-install list this information
when the verbosity level is 2 or higher. Sample usage:
{{{
$ cabal install --verbose=2 --dry-run gnutls
Reading available packages...
Resolving dependencies...
base BSD3
bytestring BSD3
ffi BSD3
ghc-prim BSD3
gnutls GPL (Just (Version {versionBranch = [3], versionTags = []}))
integer-gmp BSD3
monads-tf BSD3
rts BSD3
transformers BSD3
In order, the following would be installed:
monads-tf-0.1.0.0 (new package)
gnutls-0.1 (new package)
}}}
This is a quick hack, as I am not familiar with the Cabal codebase. This
should probably be wrapped as a {{{--list-licenses}}} command line switch.
Pretty-printing licenses would be a plus.
I am already finding this feature useful, and hope others will too.
--
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/889>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects
_______________________________________________
cabal-devel mailing list
cabal-devel@haskell.org
http://www.haskell.org/mailman/listinfo/cabal-devel
