dba89283ad
The build.Default context really needs to accurately describe the default build context. The goexperiment tags being a special case in the go command violates that rule and is the root cause of the various try-bot failures blocking the enabling of regabi. (The cleanups I made in golang.org/x/tools were long overdue but are not strictly necessary for making regabi work; this CL is.) Having moved the GOEXPERIMENT parsing into internal/buildcfg, go/build can now use it to set up build.Default, in the new field ToolTags, meant to hold toolchain-determined tags (for now, just the experiments). And at the same time we can remove the duplication of GOOS and GOARCH defaults. And then once build.Default is set up accurately, the special case code in cmd/go itself can be removed, and the special case code in test/run.go is at least a bit less special. Change-Id: Ib7394e10aa018e492cb9a83fb8fb9a5011a8c25b Reviewed-on: https://go-review.googlesource.com/c/go/+/310732 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Jay Conrod <jayconrod@google.com> Reviewed-by: Austin Clements <austin@google.com> |
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