George Hartzell 60968a3fbf Add list_url for r-readr, finding old versions (#10231) ... r-tidyverse needs r-readr@1.1.1, r-reardr needs a list_url so that it can find it.		2019-01-01 08:05:53 -06:00
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spack	Add list_url for r-readr, finding old versions (#10231)	2019-01-01 08:05:53 -06:00