Reach 2.x keeps the command surface intentionally small. Older task names are removed and replaced by modes on the canonical commands.

mix reach.map

Project-level inventory and risk map.

mix reach.map
mix reach.map PATH
mix reach.map --modules
mix reach.map --coupling --sort instability
mix reach.map --effects
mix reach.map --boundaries --min 3
mix reach.map --depth --top 20
mix reach.map --data

mix reach.inspect TARGET

Target-local investigation.

mix reach.inspect Module.function/arity --deps
mix reach.inspect Module.function/arity --impact
mix reach.inspect lib/file.ex:42 --context
mix reach.inspect Module.function/arity --data --variable user
mix reach.inspect Module.function/arity --why Other.Module.call/1
mix reach.inspect Module.function/arity --graph

mix reach.trace

Data-flow and slicing workflows.

mix reach.trace --from conn.params --to Repo
mix reach.trace --from conn.params --to System.cmd --all
mix reach.trace --variable token --in MyApp.Auth.login/2
mix reach.trace lib/my_app/auth.ex:42 --forward

mix reach.check

CI and release-safety checks.

mix reach.check --arch
mix reach.check --changed --base main
mix reach.check --dead-code
mix reach.check --smells
mix reach.check --candidates

mix reach.otp

OTP/process analysis.

mix reach.otp
mix reach.otp MyApp.Worker
mix reach.otp --concurrency
mix reach.otp --format json

Removed commands

Use the canonical replacements:

RemovedUse instead
mix reach.modulesmix reach.map --modules
mix reach.couplingmix reach.map --coupling
mix reach.hotspotsmix reach.map --hotspots
mix reach.depthmix reach.map --depth
mix reach.effectsmix reach.map --effects
mix reach.boundariesmix reach.map --boundaries
mix reach.xrefmix reach.map --data
mix reach.deps TARGETmix reach.inspect TARGET --deps
mix reach.impact TARGETmix reach.inspect TARGET --impact
mix reach.slice TARGETmix reach.trace TARGET
mix reach.flow ...mix reach.trace ...
mix reach.dead_codemix reach.check --dead-code
mix reach.smellmix reach.check --smells
mix reach.graph TARGETmix reach.inspect TARGET --graph
mix reach.concurrencymix reach.otp --concurrency