Federico Beffa <[email protected]> skribis: > On Sun, Jan 10, 2016 at 9:49 PM, Ludovic Courtès <[email protected]> wrote: >> Federico Beffa <[email protected]> skribis: >> >>> I've noticed that a derivation is a function of the order of the >>> inputs. As an example, the following two input orders give rise to two >>> distinct derivations: >>> >>> A) >>> >>> (inputs >>> `(("texlive" ,texlive) >>> ("texinfo" ,texinfo) >>> ("m4" ,m4) >>> ("libx11" ,libx11)) >>> >>> B) >>> (inputs >>> `(("texinfo" ,texinfo) >>> ("texlive" ,texlive) >>> ("m4" ,m4) >>> ("libx11" ,libx11)) >>> >>> Is this intentional? >> >> Yes. There are several places where order matters, most importantly >> search paths, and these are computed from the input lists. > > If order matters, it would probably be more robust to force internally > a specific order rather than relying on the (often random) order > defined in a package recipe (possibly created by an importer, ...).
Most of the time any order would work, but I can imagine situations where the packager could purposefully choose a specific order. So I’d rather not do any automatic sorting, if that’s what you have in mind. Thanks, Ludo’.
