Re: help updateing go to 1.13

[Alex Griffin]

I believe the go-build-system will need to be updated to support Go modules. 
For some reason they thought it would be a good idea for `go build` to access 
the network for consistency with `go get`. Until we figure out what to do about 
this, I think we can just set the $GO111MODULE environment variable to "off".

https://golang.org/cmd/go/#hdr-Module_support

-- 
Alex Griffin

On Sat, Feb 8, 2020, at 3:59 AM, Jack Hill wrote:
> Hi Guix,
> 
> I thought I would try my hand at updating our go package to 1.13. Looking 
> at the release notes [0] it didn't look to bad. What I have so far can be 
> found in the attached patch.
> 
> With the patch, go builds. To spot check that everything still looked 
> okay, I also tried to build syncthing. Doing so, however, failed when it 
> tried to fetch a dependency from the network:
> 
> ```
> go: 
> github.com/AudriusButkevicius/go-nat-pmp@v0.0.0-20160522074932-452c97607362: 
> Get 
> https://proxy.golang.org/github.com/%21audrius%21butkevicius/go-nat-pmp/@v/v0.0.0-20160522074932-452c97607362.mod:
>  dial tcp: lookup proxy.golang.org on [::1]:53: read udp 
> [::1]:35040->[::1]:53: read: connection refused
> command "go" "run" "build.go" "-no-upgrade" failed with status 1
> builder for 
> `/gnu/store/5zs0yrcvr0vwsashsn2i5vx1fgynhmaw-syncthing-1.2.2.drv' 
> failed with exit code 1
> ```
> 
> go-github-com-audriusbutkevicius-go-nat-pmp is listed as an input for 
> syncthing. I don't know why the change in compiler version would have 
> caused this. Thoughts?
> 
> [0] https://golang.org/doc/go1.13
> 
> [1] On thing that might need addition thinking is that `go get` in 1.13 
> now uses the Google mirror for fetching modules and cheksums which is 
> different than current behavior. I'm not sure if this poses any privacy 
> concerns for the user, and would like to hear what other's think, but this 
> is not the main problem I'm struggling with today.
> 
> Best,
> Jack
> Attachments:
> * 0001-WIP-gnu-go-update-to-1.13.patch