Goda is a Go dependency analysis toolkit. It contains tools to figure out what your program is using.
Note: the exact syntax of the command line arguments has not yet been finalized. So expect some changes to it.
Cool things it can do:
# draw a graph of packages in github.com/loov/goda
goda graph github.com/loov/goda/...:root | dot -Tsvg -o graph.svg
# draw a dependcy graph of github.com/loov/goda
goda graph -cluster -short github.com/loov/goda | dot -Tsvg -o graph.svg
# list dependencies of github.com/loov/goda
goda list github.com/loov/goda/...:noroot
# list packages shared by github.com/loov/goda/pkgset and github.com/loov/goda/cut
goda list shared(github.com/loov/goda/pkgset, github.com/loov/goda/cut)
# list packages that are only imported for tests
goda list test=1(github.com/loov/goda/...) - test=0(github.com/loov/goda/...)
# list packages that are imported for windows and not linux
goda list goos=windows(github.com/loov/goda/...) - goos=linux(github.com/loov/goda/...)
# list how much memory each symbol in the final binary is taking
goda weight -h $GOPATH/bin/goda
# show the impact of cutting a package
goda cut ./...
# print dependency tree of all sub-packages
goda tree ./...
# print stats while building a go program
go build -a --toolexec "goda exec" .
Maybe you noticed that it's using some weird symbols on the command-line while specifying packages. They allow for more complex scenarios.
The basic syntax is that you can specify multiple packages:
goda list github.com/loov/goda/... github.com/loov/qloc
By default it will select all the packages and dependencies of those packages. You can select only the packages with :root and without the roots :noroot. For example:
goda list github.com/loov/goda/...:root
goda list github.com/loov/goda/...:noroot
You can also do basic arithmetic with these sets. For example, if you wish to ignore all golang.org/x/tools dependencies:
goda list github.com/loov/goda/... - golang.org/x/tools/...
shared subcommand lists shared dependencies:
goda list shared(github.com/loov/goda/exec, github.com/loov/goda/graph)
The functionality can also be combined:
# list packages used by github.com/loov/goda
# excluding golang.org/x/tools/..., but not their dependencies
goda list github.com/loov/goda/...:noroot - golang.org/x/tools/...:root
Here's an example output for:
goda graph github.com/loov/goda/... | dot -Tsvg -o graph.svg
go list and go mod are tightly integrated with Go and can answer simple queries with compatibility. They also serves as good building blocks for other tools.
goda is intended for more complicated queries and analysis. Some of the features can be reproduced by format flags and scripts. However, this library aims to make even complicated analysis fast.
Also, goda can be used together with go list and go mod.
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