tree 14f15a55e00b554a8abf0f9db54a4c1b09dffb07
parent aee62ba4e97dba048856c8205798a9b76b8619ae
author Zyad A. Ali <zyad.ali.me@gmail.com> 1607785077 +0200
committer Jonathan Amsterdam <jba@google.com> 1607971739 +0000

internal/proxydatasource: support incompatible modules in GetLatestMajorVersion

Currently, GetLatestMajorVersion uses v2 as a base when searching for
latest major versions. This fails to find major versions for
incompatible modules that jump directly from mod/path to mod/path/vN
where N > 2.

To avoid that, update GetLatestMajorVersion to use module's current
version as a base instead.

Add a test case with an incompatible module.

Fixes golang/go#42922

Change-Id: I660d76c3cddf420b85c25b8e7c9f425ba712824c
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/277472
Reviewed-by: Julie Qiu <julie@golang.org>
Reviewed-by: Jonathan Amsterdam <jba@google.com>