Hello! 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. • ‘guix package’ supports ‘--with-source’ and ‘--with-input’, with the caveat that such transformations are forgotten upon upgrades. • There’s a fairly generic package transformation framework in (guix scripts build). • The documentation of command-line build options is a bit improved, with subsections for each category of options. Feedback welcome! Ludo’.