Google's x/tools (of gopls fame) added a new deadcode tool recently

[tombh]

From their README:

The deadcode command loads a Go program from source then uses Rapid
Type Analysis (RTA) to build a call graph of all the functions
reachable from the program's main function. Any functions that are not
reachable are reported as dead code, grouped by package.

tl;dr this is like unused but for an entire application.

Once it stabilises might it be a good candidate for golangci-lint?

Sorry if this has been addressed already, I did have a search but couldn't see anything.

[ldez]

Hello,

deadcode is a pure command line (package main only => cannot be used as a lib) and not based on go/analysis API.

golangci-lint is based on the go/analysis API to optimize the runs of the different linters.

The idea is interesting but it's not a good candidate for golangci-lint.