Il giorno mercoledì 1 agosto 2018 19:23:04 UTC+2, Ian Lance Taylor ha scritto: > > On Fri, Jul 27, 2018 at 9:33 PM, Dan Kortschak > <dan.ko...@adelaide.edu.au <javascript:>> wrote: > > > > That's fine. Though given that a program *can* shell out to `go list > > std` to get the list of std packages, it seems odd to me that there is > > not some way of doing that without need to exec a new process. You > > explained it, but not in a way that makes sense to me. > > I'll try to explain it again. > > In Go 1.11 the list of standard packages can be found by looking for > directories under `$GOROOT/src`. We create a package stdpkg that > returns the list of standard packages. It works fine when using Go > 1.11. You build a program using Go 1.11 that calls stdpkg. It works > fine. You install that program in your /usr/bin directory. > > Now, for some reason in Go 1.12, we move things around. Now looking > at `$GOROOT/src` no longer gives you the list of standard packages, > they've moved somewhere else. We update stdpkg so that it uses the > new mechanism. > > You update your system to use Go 1.12. You use it for a few days. > Then you run your program, previously built with Go 1.11, previously > installed in /usr/bin. That program looks at `$GOROOT/src` and > doesn't find anything, because you are now using Go 1.12. So your > program fails in some unexpected way. > > If your program instead ran `go list`, then it would still work, even > when built with 1.11, after you update to 1.12. > > Then the question: why golint and friends *does not* run `go list`? Moreover, at least last time I checked, each tool use a slight different implementation with subtle changes in the command behavior.
There is also https://github.com/golang/go/issues/8768. Manlio -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
