Ben Sturmfels <ben@sturm.com.au> writes:

> builder for
> `/gnu/store/hxpb6xvx324d9i9kxc7ywfwwaz3zgs4z-jitsi-2.10.drv' failed to
> produce output path
> `/gnu/store/kz7kwgm25xk83fc69immm80dazv9gb6x-jitsi-2.10'
> @ build-failed
> /gnu/store/hxpb6xvx324d9i9kxc7ywfwwaz3zgs4z-jitsi-2.10.drv - 1 builder
> for `/gnu/store/hxpb6xvx324d9i9kxc7ywfwwaz3zgs4z-jitsi-2.10.drv'
> failed to produce output path
> `/gnu/store/kz7kwgm25xk83fc69immm80dazv9gb6x-jitsi-2.10'
> note: keeping build directory `/tmp/guix-build-jitsi-2.10.drv-0'
> guix build: error: build failed: build of `/gnu/store/hxpb6xvx324d9i9kxc7ywfwwaz3zgs4z-jitsi-2.10.drv' failed

The derivation failed because it didn't produce any output.  Perhaps
it's because you removed the 'install phase?  Either way, you'll need to
make a change of some kind that actually deposits the build output into
the output path.

-- 
Chris