Am Freitag, 14. Dezember 2012 schrieb Andreas Enge:
> The command
>    ./pre-inst-env guix-build hello
> fails with
> 
> error: build failed: substituter `/usr/local/guix-
> git/libexec/nix/substituters/download-using-manifests.pl' failed: error:
> executing `/usr/local/guix-git/libexec/nix/substituters/download-using-
> manifests.pl': No such file or directory

As for nix-worker, it helps to call
   NIX_SUBSTITUTERS="" guix-daemon --build-users-group=nixbld
Could something be done globally about this?

The next error message is
@ build-started /nix/store/6q7s15hqyqxkxnxxx1d7jj2rm6q28ib9-module-
import.drv /nix/store/fdzwc7ss7zbpg60n5h2kpp98l8sbjx9f-module-import 
x86_64-linux /usr/local/guix-
git/var/log/nix/drvs/6q7s15hqyqxkxnxxx1d7jj2rm6q28ib9-module-import.drv.bz2
error: build failed: all build users are currently in use; consider 
creating additional users and adding them to the `nixbld' group

although I just started the guix daemon and there are 10 users in the
group nixbld. 

Andreas