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Description
Go version
go version go1.25.0 darwin/arm64
Output of go env in your module/workspace:
AR='ar' CC='cc' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_ENABLED='1' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' CXX='c++' GCCGO='gccgo' GO111MODULE='' GOARCH='arm64' GOARM64='v8.0' GOAUTH='netrc' GOBIN='' GOCACHE='/Users/adamhamrick/Library/Caches/go-build' GOCACHEPROG='' GODEBUG='' GOENV='/Users/adamhamrick/Library/Application Support/go/env' GOEXE='' GOEXPERIMENT='' GOFIPS140='off' GOFLAGS='' GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/2l/06jbymcj3mn7yp510wxm_jq40000gn/T/go-build4290062372=/tmp/go-build -gno-record-gcc-switches -fno-common' GOHOSTARCH='arm64' GOHOSTOS='darwin' GOINSECURE='' GOMOD='/Users/adamhamrick/Projects/branch-out/golang/example_project/go.mod' GOMODCACHE='/Users/adamhamrick/go/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='darwin' GOPATH='/Users/adamhamrick/go' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/opt/homebrew/Cellar/go/1.25.0/libexec' GOSUMDB='sum.golang.org' GOTELEMETRY='on' GOTELEMETRYDIR='/Users/adamhamrick/Library/Application Support/go/telemetry' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/opt/homebrew/Cellar/go/1.25.0/libexec/pkg/tool/darwin_arm64' GOVCS='' GOVERSION='go1.25.0' GOWORK='' PKG_CONFIG='pkg-config'
What did you do?
I'm writing a simple program to discover and load basic information about all packages in a Go project. This code normally works fine.
func loadPackagesFromModule(moduleDir string) { config := &packages.Config{ Mode: packages.NeedName | packages.NeedModule | packages.NeedFiles, Dir: moduleDir, Tests: true, } pkgs, err := packages.Load(config, "./...") if err != nil { return nil, fmt.Errorf("failed to load packages from module %s: %w", moduleDir, err) } }
What did you see happen?
I'm dealing with a project that has build tags in many of their files. When I run the above code on this project:
.
├── go.mod
├── go.sum
├── main.go * Has build tag
├── package1
│ └── other1.go * Has build tag
│ └── other1_test.go * Has build tag
├── package2
│ └── other2.go * Has build tag
│ └── other2_test.go * Has build tag
├── base.go * Has build tag
├── base_test.go * Has build tag
the code returns only the main package and its files in IgnoredFiles.
What did you expect to see?
I can get it to properly Load all packages if I provide BuildFlags: []string{"-tags", "build_flag"}, but I thought the whole point of IgnoredFiles was to find files and packages that might have been ignored thanks to build tags. I wouldn't expect only the main package to be loaded in IgnoredFiles and all the rest to never be touched.
Is this a bug? Or am I misunderstanding how this is intended to work? Is there any way to fully Load all packages, agnostic of build tags?