On Thu, 29 Oct 2015, Jan Synáček wrote: > On Thu, Oct 29, 2015 at 2:23 PM, Thompson, David > wrote: > >> On Thu, Oct 29, 2015 at 6:08 AM, Jan Synáček >> wrote: >>> Hello, >>> >>> I've been playing with guix a bit and I must say I really like it. I >> don't >>> understand a few things though. >>> >>> 1) How do I tell if a package I have installed had been built locally or >>> downloaded as a substitute? >> >> You don't. You can think of substitution is an optimization >> technique, the results are indistinguishable except for that it likely >> took less time to get the substitute. It's possible to query the >> substitute server to see if it has the store item that you have, but >> that doesn't mean that your copy was retrieved from there necessarily. >> Other than that, the Guix tools will tell you at build/download time >> whether or not it is building from source or downloading a pre-built >> binary. What use-case do you have in mind? > > > Nothing really specific. I was just curious if it was possible. Now that I > think about it, > I should get the same result whether building myself or installing a > substitute, > right? Right. Thats what is going on here - binary same. > I'm curious about one more thing. In /gnu/store/, there are built packages, > which I understand. > Then there are derivations, -builder files, standalone statically linked > binaries, some patches > and also some scheme files. There's also the .links directory that contains > various file formats > as well, only this time their names are only hashes. Does any > documentation/source > of information about what all those are exist? I couldn't find anything. > The .links directory takes > over 2GiB on my machine and I wonder why. No idea. :) > Cheers, > -- > Jan Synáček Adam Pribyl