Ricardo Wurmus <ricardo.wur...@mdc-berlin.de> skribis: > Ludovic Courtès <l...@gnu.org> writes: > >> I’ve pushed my “train hacks”, which are a continuation of refactoring >> work I had done in December (ca. 64ec0e2): >> >> • ‘guix build’ has a new ‘--with-input’ option to rewrite the >> dependency graph so you can run: >> >> guix build guix --with-input=guile=guile-next >> >> and guess what it does. :-) >> >> However, it only works for explicit inputs. > > What does it mean that it only works for *explicit* inputs? Does this > mean that default inputs added by the build system (e.g. GCC) cannot be > replaced?
Exactly. Eventually we should permit it as well but as you know, it’s currently less convenient to fiddle with implicit inputs than with explicit inputs (see ‘package-with-explicit-inputs’ and co.) We should improve the API in this regard. > Looking at the code it seems that it is operating on labels. No, ‘transform-package-inputs’ in (guix scripts build) matches packages by name, not by label, for the reasons you gave. Maybe the doc should be clarified? Thanks for your feedback! Ludo’.
