Leo Famulari <leo@famulari.name> writes:

[...]

> In gnu/packages/mes.scm:
>   79: 1 [native-inputs]
> In unknown file:
>    ?: 0 [string-prefix? #f "x86_64-linux" ...]
>
> ERROR: In procedure string-prefix?:
> ERROR: In procedure string-prefix?: Wrong type argument in position 1 (expecting string): #f

This seems to be because system is not x86_64, and
(%current-target-system) evaluates to false. I *think* the attached
patch solves it. WDYT?