Hi Mark,
>> commit babeea3f9f46c1f1f812e590f46283e91684f327 >> Author: Ricardo Wurmus <rek...@elephly.net> >> Date: Thu May 31 09:16:01 2018 +0200 >> >> build-system/r: Use invoke. >> >> * guix/build/r-build-system.scm (invoke-r): Use invoke. >> (pipe-to-r): Raise invoke-error on non-zero return value. >> (check): Unconditionally return #t. > > Thanks for this! However: […] > The 'arguments' field should be a list, not a string. Thanks for pointing this out! I’ll push a fix to the new core-updates branch shortly. -- Ricardo