matrix-user-swap

A tool to migrate between matrix user accounts. This is the same general idea as EMS Migrator, but with the intent of being less bad.

Migrated State

• Joined rooms
• User power level in each joined room
• Tags in each joined room (the m.tag room account data event)
• Direct message mappings (the m.direct global account data event)
• Ignored users (the m.ignored_user_list global account data event)

Limitations

• Rate-limiting is not implemented. This will likely only work with conduit-family servers, which don't implement server-side rate limiting. (planned)
• Migrating between users on different homeservers is unsupported. (planned)

State that is not migrated

• Global displayname/avatar and per-room displaynames/avatars (planned)
• MSC2545 user custom emotes/sticker packs (planned)
• Invited/left rooms (not planned, infeasible)
• Knocked rooms (not planned)
• Room history (not planned, infeasible)
• Push rules and client settings (not planned)

Installation

With nix

git clone https://gitlab.computer.surgery/olivia/matrix-user-swap.git
cd matrix-user-swap
nix-build

The binary will be in result/bin/matrix-user-swap.

Without nix

Install rust with rustup (or your system package manager), then:

git clone https://gitlab.computer.surgery/olivia/matrix-user-swap.git
cd matrix-user-swap
cargo build --release

The binary will be in target/release/matrix-user-swap.

Usage

Acquire access tokens from the old and new accounts. This can generally be extracted from a logged-in client. In Element, the access token is under the "Help & About" tab in settings.