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authorPascal Wittmann <mail@pascal-wittmann.de>2015-11-21T10·43+0100
committerPascal Wittmann <mail@pascal-wittmann.de>2015-11-21T10·43+0100
commit4921223160ebde522b8362c46e8f962fc09878ac (patch)
treeb3bc6602015864632cae2ad6e1548132610aefa8 /src/libmain
parentb9b7bb18063d8315cd84424b7e3535b76d06cfc6 (diff)
Print license information on '--xml --meta'
The nixpkgs manual prescribes the use of values from stdenv.lib.licenses
for the meta.license attribute. Those values are attribute sets and
currently skipped when running nix-env with '--xml --meta'. This has the
consequence that also nixpkgs-lint will report missing licenses.

With this commit nix-env with '--xml --meta' will print all attributes
of an attribute set that are of type tString. For example the output for
the package nixpkgs.hello is

    <meta name="license" type="strings">
      <string type="url" value="http://spdx.org/licenses/GPL-3.0+" />
      <string type="shortName" value="gpl3Plus" />
      <string type="fullName" value="GNU General Public License v3.0 or later" />
      <string type="spdxId" value="GPL-3.0+" />
    </meta>

This commit fixes nixpkgs-lint, too.
Diffstat (limited to 'src/libmain')
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