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cmd/dist: allow arbitrary package renames for bootstrap imports

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Import declaration matching currently has a list of specific cases. It
allows bare imports, dot imports, and renamed imports named "exec" and
"rtabi".

Keeping a specific allowlist of renamed imports is unnecessary and
causes annoyance for developers adding such imports, as the bootstrap
build errors do not make it clear that this is where the issue lies.

We can simplify this to be much more general. The body of the condition
will still only rewrite imports in cmd/ or in bootstrapDirs.

I believe the only downside of this change is that it makes it a bit
more likely to match and replace within comments. That said, there
should be no harm in replacements within comments.

This change results in no change to the resulting bootstrap source tree:

$ diff -u -r /tmp/bootstrap.before/src /tmp/bootstrap.after/src
diff -u -r /tmp/bootstrap.before/src/bootstrap/internal/buildcfg/zbootstrap.go /tmp/bootstrap.after/src/bootstrap/internal/buildcfg/zbootstrap.go
--- /tmp/bootstrap.before/src/bootstrap/internal/buildcfg/zbootstrap.go 2024-03-27 12:29:27.439540946 -0400
+++ /tmp/bootstrap.after/src/bootstrap/internal/buildcfg/zbootstrap.go  2024-03-27 12:28:08.516211238 -0400
@@ -20,6 +20,6 @@
 const defaultGOEXPERIMENT = ``
 const defaultGO_EXTLINK_ENABLED = ``
 const defaultGO_LDSO = ``
-const version = `devel go1.23-38087c80ae Wed Mar 27 12:09:16 2024 -0400`
+const version = `devel go1.23-fa64f04409 Wed Mar 27 12:22:52 2024 -0400`
 const defaultGOOS = runtime.GOOS
 const defaultGOARCH = runtime.GOARCH

Change-Id: Ia933c6373f366f2e607b28d900227c24cb214674
Reviewed-on: https://go-review.googlesource.com/c/go/+/574735
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
This commit is contained in:
Michael Pratt 2024-03-27 12:09:26 -04:00 committed by Gopher Robot
parent 8d4abd788c
commit a973b4256e
1 changed files with 1 additions and 2 deletions
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3
src/cmd/dist/buildtool.go vendored
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@ -316,8 +316,7 @@ func bootstrapFixImports(srcFile string) string {
inBlock = false
continue
}
if strings.HasPrefix(line, `import "`) || strings.HasPrefix(line, `import . "`) ||
inBlock && (strings.HasPrefix(line, "\t\"") || strings.HasPrefix(line, "\t. \"") || strings.HasPrefix(line, "\texec \"") || strings.HasPrefix(line, "\trtabi \"") || strings.HasPrefix(line, "\tpgoir \"")) {
if strings.HasPrefix(line, `import `) || inBlock {
line = strings.Replace(line, `"cmd/`, `"bootstrap/cmd/`, -1)
for _, dir := range bootstrapDirs {
if strings.HasPrefix(dir, "cmd/") {