tc-block-builder is used at run time in 34 crates (of which 2 optionally). It is a direct run-time dependency in 11 crates. It's used only as a dev dependency in 5 crates (of which 2 directly).

Depender (with downloads and own rev deps) tc-block-builder version
6 tc-rpc ^0.8.0
8 tc-finality-grandpa ^0.8.0
15 tc-network ^0.8.0
15 tc-service ^0.8.0
1 node-testing ^0.8.0
4 tc-basic-authorship ^0.8.0
1 tc-consensus-aura ^0.8.0
1 tetcore-test-runtime-client ^0.8.0
2 tc-offchain dev ^0.8.0
9 tc-transaction-pool dev ^0.8.0
6 tc-consensus-babe dev ^0.8.0
1 tc-finality-grandpa-rpc dev ^0.8.0
1 tetcore-test-runtime dev ^0.8.0