From 9816367ed1b42e7edd508b8d787dd926efcc277d Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Sat, 9 Jun 2007 19:45:55 +0000 Subject: [PATCH] * Function to return a range of numbers. svn path=/nixpkgs/trunk/; revision=8850 --- pkgs/lib/default.nix | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/pkgs/lib/default.nix b/pkgs/lib/default.nix index cac34c26719..720ffcf9b37 100644 --- a/pkgs/lib/default.nix +++ b/pkgs/lib/default.nix @@ -117,5 +117,12 @@ rec { # (e.g. `++ optional (system == "i686-linux") flashplayer'). optional = cond: elem: if cond then [elem] else []; - + + # Return a list of integers from `first' up to and including `last'. + range = first: last: + if builtins.lessThan last first + then [] + else [first] ++ range (builtins.add first 1) last; + + }