commit a8b486d57d00046ea9af42033efad11fcb12248c
author Jonathan Amsterdam <jba@google.com> Mon Apr 18 10:15:57 2022 -0400
committer Jonathan Amsterdam <jba@google.com> Mon Apr 18 19:11:58 2022 +0000
tree 24c53a027a1b7a5913231beda399a5b7c5400806
parent a3a009e12ea183c9e6e1abd028f5e091c9fb2601

internal/fetch: list known alternative module paths

Some modules don't have go.mod files. Nonetheless there is clearly a
canonical module path, and various forks that should be marked as
alternative. A major example is github.com/Azure/azure-sdk-for-go,
the canonical path, and forks like gopkg.in/Azure/azure-sdk-for-go.
For large modules like the Azure SDK, these forks consume a lot of
processing bandwidth.

Although we already have a mechanism for this (see largefork.go), it
requires both contents and version numbers to match a known list of
modules and versions.  The list can get out of date, and it doesn't
include every possible version. For instance, the gopkg.in Azure fork
consists of many pseudo-versions that aren't in the proxy list.

This CL adds a list of module paths that are known to be forks.
They will be marked as alternative modules regardless of version
or contents.

Fixes golang/go#52329.

Change-Id: Ie374da67f0f42f50be551a1078b667686453b447
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/400357
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>