Hi Zelphir,
> $ ./pre-inst-env guix build guile-fslib > guix build: error: guile-fslib: unknown package […] > Ugh. Not working. for what it’s worth, I added the definition to gnu/packages/guile-xyz.scm and it worked. I note that you haven’t mentioned running “make”, but your output does not indicate that the Guix sources are interpreted. I wonder why. It seems to me that pre-inst-env in your case doesn’t have the intended effect. You should run “make”. -- Ricardo
