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:
# All of the commands should be run in the cloned repository.
git clone https://github.com/loov/goda && cd goda
# draw a graph of packages in github.com/loov/goda
goda graph "github.com/loov/goda/..." | dot -Tsvg -o graph.svg
# draw a dependency graph of github.com/loov/goda and dependencies
goda graph -cluster -short "github.com/loov/goda:all" | dot -Tsvg -o graph.svg
# list direct dependencies of github.com/loov/goda
goda list "github.com/loov/goda/...:import"
# list dependency graph that reaches flag package, including std
goda graph -std "reach(github.com/loov/goda/...:all, flag)" | dot -Tsvg -o graph.svg
# list packages shared by github.com/loov/goda/pkgset and github.com/loov/goda/cut
goda list "shared(github.com/loov/goda/pkgset:all, github.com/loov/goda/cut:all)"
# list packages that are only imported for tests
goda list "github.com/loov/goda/...:+test:all - github.com/loov/goda/...:all"
# list packages that are imported with `purego` tag
goda list -std "purego=1(github.com/loov/goda/...:all)"
# list packages that are imported for windows and not linux
goda list "goos=windows(github.com/loov/goda/...:all) - goos=linux(github.com/loov/goda/...:all)"
# 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 ./...:all
# print dependency tree of all sub-packages
goda tree ./...:all
# print stats while building a go program
go build -a --toolexec "goda exec" .
# list dependency graph in same format as "go mod graph"
goda graph -type edges -f '{{.ID}}{{if .Module}}{{with .Module.Version}}@{{.}}{{end}}{{end}}' ./...:all
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 specific packages. You can select the package's direct dependencies with :import, direct and indirect dependencies with :import:all, the package and all of its direct and indirect dependencies with :all:
goda list github.com/loov/goda/...:import
goda list github.com/loov/goda/...:import:all
goda list github.com/loov/goda/...:all
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/...:all - golang.org/x/tools/...
To get more help about expressions or formatting:
goda help expr
goda help format
Here's an example output for:
git clone https://github.com/loov/goda && cd goda
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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