diff options
Diffstat (limited to 'pkgs/lib/trivial.nix')
| -rw-r--r-- | pkgs/lib/trivial.nix | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/lib/trivial.nix b/pkgs/lib/trivial.nix index aaae36afa058f..af47a8c88415e 100644 --- a/pkgs/lib/trivial.nix +++ b/pkgs/lib/trivial.nix @@ -18,4 +18,8 @@ rec { # Flip the order of the arguments of a binary function. flip = f: a: b: f b a; + # `seq x y' evaluates x, then returns y. That is, it forces strict + # evaluation of its first argument. + seq = x: y: if x == null then y else y; + } |