Error installing. No access to component runtime_sales_social:socialPanel

[miki-nis]

Trying to install this package on a developer org, Organization Edition = Partner Developer Edition. Installing the 3rd link ("Installing Easy Spaces by URL process" - step #6: https://login.salesforce.com/packaging/installPackage.apexp?p0=04t1I0000036tYUQAY ) package fails with error:
"(Contact_Record_Page) Your org doesn't have access to component runtime_sales_social:socialPanel."
How to install, or what are the correct installation requirements?

[miki-nis]

I have managed to install this package through trial and error. Encountered 2 errors:

error #1: "(Contact_Record_Page) Your org doesn't have access to component runtime_sales_social:socialPanel."
to solve:
Setup > "Social Accounts and Contacts Settings" = Enable

error #2: "Your org doesn't have access to component forceChatter:recordFeedContainer"
to solve:
Setup > Chatter > "Chatter Settings" = Enable