Difference between ELSI-vendored ELPA and actual ELPA library
I recently tried building ELPA for OSX and encountered issues with Linux-specific system functions and arrived at the conclusion that ELPA probably can't be build for OSX without changes upstream (see elpa-feedstock#3).
When checking the vendored ELPA source in ELSI I was surprised to find the respective files blocking the OSX build to be absent. What is the practical difference between the vendored ELPA version and the actual ELPA version?