6abc4a7c3e
Suppose you have already downloaded "foo.bar/baz", where the repo is for all of foo.bar/, and you then "go get -u foo.bar/...". The command-line wildcard expands to foo.bar/baz, and go get updates the foo.bar/ repo. Suppose that the repo update brought in foo.bar/quux, though, which depends on other.site/bar. Download does not consider foo.bar/quux, since it's only looking at foo.bar/baz, so it didn't download other.site/bar. After the download, we call importPaths(args) to decide what to install. That call was reevaluating the original wildcard with the new repo and matching foo.bar/quux, which was missing its dependency other.site/bar, causing a build failure. The fix in this CL is to remember the pre-download expansion of the argument list and pass it to the installer. Then only the things we tried to download get installed. The case where foo.bar/ is not even checked out yet continues to work, because in that case we leave the wildcard in place, and download reevaluates it during the download. The fix in this CL may not be the right long-term fix, but it is at least a fix. It may be that download should be passed all the original wildcards so that it can reexpand them as new code is downloaded, ideally reaching a fixed point. That can be left for another day. In short: - The problem is that the "install" half of "go get" was trying to install more than the "download" half was properly downloading. - The fix in this CL is to install just what was downloaded (install less). - It may be that a future CL should instead download what will be installed (download more). Fixes #14450. Change-Id: Ia1984761d24439549b7cff322bc0dbc262c1a653 Reviewed-on: https://go-review.googlesource.com/19892 Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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