Use common licence attributes from lib/licenses.nix

Many (less easily automatically converted) old-style strings
remain.

Where there was any possible ambiguity about the exact version or
variant intended, nothing was changed. IANAL, nor a search robot.

Use `with stdenv.lib` wherever it makes sense.

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/tools/system/bootchart/default.nix b/pkgs/tools/system/bootchart/default.nix
index bb3f9d72e828..1e2f74e1b0a2 100644
--- a/pkgs/tools/system/bootchart/default.nix
+++ b/pkgs/tools/system/bootchart/default.nix
@@ -28,10 +28,10 @@ stdenv.mkDerivation rec {
     chmod +x $out/sbin/bootchartd
   '';
 
-  meta = {
+  meta = with stdenv.lib; {
     homepage = http://www.bootchart.org/;
     description = "Performance analysis and visualization of the GNU/Linux boot process";
-    license="GPLv2+";
+    license = with licenses; gpl2Plus;
   };
 
 }