On Fri, May 12, 2017 at 01:31:00PM +0100, Kevin Cox wrote: > On 05/12/2017 01:23 PM, Harmen wrote: > > I'm building a few ruby and node projects with nix. It works well enough, > > but > > nix does too many rebuilds, also when nothing changed. The question is: how > > I > > can figure out why it does a rebuild? Maybe some checksum has changed, but > > can > > I somehow figure out which one? > I suspect that at a bare minimum the ./result symlink has changed. > > What I tend to do is use builtins.filterSource in order to ensure I am only > including paths that I need. > > You can see an example at > https://github.com/kevincox/sog/blob/master/default.nix > > src = builtins.filterSource (name: type: > (lib.hasPrefix (toString ./BUILD) name) || > (lib.hasPrefix (toString ./sog) name) || > (lib.hasPrefix (toString ./test) name) || > (lib.hasPrefix (toString ./tools) name) || > (lib.hasPrefix (toString ./WORKSPACE) name)) ./.;
Works great, thanks! _______________________________________________ nix-dev mailing list nix-dev@lists.science.uu.nl https://mailman.science.uu.nl/mailman/listinfo/nix-dev
