[Nix-dev] jam passing in hydra but not locally

[Samuel]

Hi,

I am curious to know why is jam building cleanly in hydra:

http://hydra.nixos.org/build/24879066/nixlog/1

But failing consistently for me locally:

Yacc1 jamgram.c jamgram.h
/bin/sh: 2: yacc: not found

yacc -d jamgram.y
[...]
Makefile:62: recipe for target 'all' failed


I have fixed it just by adding yacc as a buildInput, but I suspect I
miss something if this is working for everyone else ...
-- 
Samuel