Version 3.9.2 of package Helm-Core has just been released in NonGNU ELPA. You can now find it in M-x list-packages RET.
Helm-Core describes itself as: ========================== Development files for Helm ========================== More at https://elpa.nongnu.org/nongnu/helm-core.html ## Summary: Contains the main code for Helm. As a package helm-core provides the files helm-core.el, helm-lib.el, ## Recent NEWS: [Not available 🙁]
