10.7 The Go Tool
The rest of this chapter concerns the go tool, which is used
for downloading, querying, formatting, building, testing, and
installing packages of Go code.
The go tool combines the features of a diverse set of tools
into one command set.
It is a package manager (analogous to apt or rpm) that answers
queries about its inventory of packages, computes their dependencies,
and downloads them from remote version-control systems.
It is a build system that computes file dependencies and invokes
compilers, assemblers, and linkers, although it is intentionally less
complete than the standard Unix make.
And it is a test driver, as we will see in Chapter 11.
Its command-line interface uses the “Swiss army knife” style, with over
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