On Mon, 27 Jan 2020 at 16:51, Pierre Neidhardt <m...@ambrevar.xyz> wrote: > > zimoun <zimon.touto...@gmail.com> writes: > > > And for example, the 'copy-build-system' could: > > > > - fetch the data from an archive, such http://data.astrometry.net or > > IPFS or Zenodo or <name-it> > > - fetch the resulting <hash> of /gnu/store/<hash>-name-version from > > susbtitutes > > Build systems don't fetch data.
I know (isolated blabla). :-) "The package using the 'copy-build-system'" is a better wording? ;-) I do not know exactly how a derivation is computed and what is used to compute the hash used in the store. Ok, first I have to do my homework. :-) But one does not want to hash several tens of GB. Whatever, I just have the feeling that what you are proposing (with small tweaks) could improve the situation for "large" data set. I do not know... Cheers, simon ps: Well, maybe we should work in the same office... it will be easier and faster than exchanging all these emails and I know yours has an awesome view :-D
