tool/

gocross is a wrapper around the `go` tool that invokes `go` from Tailscale's custom toolchain, with the right build parameters injected based on the native+target GOOS/GOARCH.

listpkgs prints the import paths that match the Go package patterns given on the command line and conditionally filters them in various ways.

updateflakes regenerates flakehashes.json, the file that records the Nix SRI hashes for the Go module vendor tree and the Tailscale Go toolchain tarball.