Access to community rooms is mostly public. Many rooms are bridged already to corresponding IRC channels.
In case of problem, you may contact User:Strk.
OSGeo does not currently host a Matrix homeserver but might do so in the future, see https://trac.osgeo.org/osgeo/ticket/2309 for updates or help on that task.
Using Matrix as an IRC client
To effectively use Matrix as an IRC client for use with OSGeo channels, you should register your nickname with Freenode services and instruct the Matrix bridge to hold that identity for you. To do so:
- In matrix, open a room connection to
@freenode_NickServ:matrix.org, this will connect you to the freenode nickserv
- If you haven't done so already, enter the command
register [<email>] <password>. This will register your nickname (needs you to follow instructions sent by email to complete the registration)
- Enter the command
identify [<nickname>] <password>This will identify your matrix user with Freenode
- Open a direct chat (in matrix) with
!storepass nickname:passwordto store your irc nickname and password with matrix to send automatically when you login to matrix
Then restart your matrix session to test