alioth/nixpkgs
3
0
Fork 0
forked from mirrors/nixpkgs
Code Releases Activity

* Add an adapter which abort an install if the installed package depends

Browse source 
on a derivation with a meta.license attribute which does not satisfy the
  license predicate.

With this adapter you can abort any install which depends on software
which are not free by default.  You can try it with MPlayer, because
MPlayer depends of win32codecs flagged as "unfree".

svn path=/nixpkgs/trunk/; revision=18530
This commit is contained in:
Nicolas Pierron 2009-11-22 17:04:33 +00:00
parent 11c3e92738
commit b29073af25
1 changed files with 40 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
pkgs/stdenv/adapters.nix
View file

@ -227,4 +227,44 @@ rec {
drvPath = printDrvPath pkg.drvPath;
};
};
/* Abort if the license predicate is not verified for a derivation
declared with mkDerivation.
One possible predicate to avoid all non-free packages can be achieved
with the following function:
isFree = license: with builtins;
if isNull license then true
else if isList license then lib.all isFree license
else license != "non-free" && license != "unfree";
This adapter can be defined on the defaultStdenv definition. You can
use it by patching the all-packages.nix file or by using the override
feature of ~/.nixpkgs/config.nix .
*/
validateLicenses = licensePred: stdenv: stdenv //
{ mkDerivation = args:
let
pkg = stdenv.mkDerivation args;
license =
if pkg ? meta && pkg.meta ? license then
pkg.meta.license
else
null;
validate = arg:
if licensePred license then arg
else abort "
Error while building ${builtins.unsafeDiscardStringContext pkg.drvPath}:
The license predicate is not verified.
bad license: ${builtins.exprToString license}
";
in pkg // {
outPath = validate pkg.outPath;
drvPath = validate pkg.drvPath;
};
};
}